CONFLOW UNIWORLD Series Manual

M/UNIWORLD-P/E
05 2020
Installation and Maintenance Manual
Pneumatic Valves
2 WAY –3 WAY
WWW.CONFLOW.IT
Servizio Assistenza
E-mail: [e-mail]

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 1
Summary
1 –GENERAL SAFETY INFORMATION....................................................................................................... 2
2 - GENERAL ASSEMBLY INSTRUCTIONS ..................................................................................................2
2.1 –ASSEMBLY ON THE SYSTEM (GENERAL NOTES).................................................................................... 2
3 –PNEUMATIC VALVES TYPE 2000-2100-2600-2700-5000-5100-5600-5700-5800 .................................... 2
3.1 –COMMISSIONING (GENERAL NOTES) ................................................................................................... 3
3.2 –ELECTRIC VALVES COMMISSIONING..................................................................................................... 3
3.2.1 –PNEUMATIC VALVES WITH “DA” MANUAL HANDWHEEL COMMISSIONING................................ 4
3.2.2 –PNEUMATIC VALVES WITH “RA” MANUAL HANDWHEEL COMMISSIONING ................................ 4
3.2.3 –PNEUMATIC VALVES WITH LUBRICATOR COMMISSIONING ASSEMBLED ON BONNET................ 4
3.3 –CALIBRATION ........................................................................................................................................ 5
3.3.1 –PNEUMATIC ADJUSTMENT VALVES............................................................................................... 5
3.3.2 –ON-OFF PNEUMATIC VALVES ........................................................................................................ 6
3.4 –MAINTENANCE ..................................................................................................................................... 7
3.4.1 –BODY GASKET REPLACEMENT ....................................................................................................... 7
3.4.1.1 –VALVES 2000 DA –2100 DA - 5000 DA –5100 DA - 5800 DA.................................................... 7
3.4.1.2 –VALVES 2000 RA –2100 RA - 5000 RA –5100 RA - 5800 RA...................................................... 8
3.4.1.3 –3-WAY VALVES 2600 DA –5600 DA –5700 DA - 2600 RA –5600 RA - 5700 RA ....................... 9
3.4.2 –PACKING REPLACEMENT.............................................................................................................. 10
3.4.2.2 –VALVES 2000 –2100 - 5000–5100 - 5800............................................................................... 10
3.4.2.3 –VALVES 2600 –2700 - 5600–5700........................................................................................... 12
3.4.3 –REPLACEMENT OF THE PLUG PROFILE - SOFT SEAL and COMPARTMENT .................................. 12
3.4.4 –DIAPHRAGM REPLACEMENT ........................................................................................................... 13
3.4.5 –INVERSE ACTION.............................................................................................................................. 13
4 –OPERATING ANOMALIES................................................................................................................. 14
5 –RISK ANALYSIS................................................................................................................................ 15
6 –ATEX DIRECTIVE 2014/34/EU .......................................................................................................... 16
6.1 –LABEL DATA REGARDING SAFETY ....................................................................................................... 16
6.2 - ASSEMBLY INSTRUCTIONS - CALIBRATION AND MAINTENANCE........................................................ 18
6.2.1 –VALVE GROUND........................................................................................................................... 18
6.3 –Additional RISK ANALYSIS ................................................................................................................... 19
6.4 –HEALTH AND SAFETY .......................................................................................................................... 19
6.5 –PRECAUTIONS FOR USE ...................................................................................................................... 19
7 –LIST OF RECOMMENDED SPARE PARTS............................................................................................ 20
8 –DECLARATIONS OF CONFORMITY ACCORDING TO DECLARATIONS IN FORCE ……………………………………………… 21- 26

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 2
1 –GENERAL SAFETY INFORMATION
ATTENTION THIS PRODUCT WAS DESIGNED FOR USE IN THE MANUFACTURING
INDUSTRY WITHOUT MILITARY PURPOSE. IT IS STRICTLY FORBIDDEN TO USE CONFLOW
PRODUCTS FOR THE PRODUCTION OF WEAPONS OF MASS DESTRUCTION. OTHER USES
MUST BE APPROVED IN ADVANCE BY THE MANUFACTURER.
REQUIREMENTS
OF
CONFORMITY
THE IMPORT-EXPORT OF CONFLOW PRODUCTS FROM ONE COUNTRY TO ANOTHER IS
REGULATED BY SAFETY AND TRADE LEGISLATION IN THESE COUNTRIES. BEFORE
SENDING THE PRODUCT TO A THIRD COUNTRY, CHECK THE PRODUCT DOES NOT
CONFLICT WITH THE REGULATIONS OF THAT COUNTRY.
Before installing the valve, remove the plastic guards covering the flanges and the connection couplings.
ATTENTION During commissioning of the valve or during operation, do not touch the body which could
conduct heat if the fluid used is at high temperature.
ATTENTION During operation, do not touch the stem as it is in movement, it may be hot and could catch
your finger or clothing.
ATTENTION Before starting any maintenance operations, ensure the valve is not pressurised and/or hot.
ATTENTION Do not remove the descriptive label fastened to the yoke since it reports the serial number,
data which is indispensable for tracking the valve over time.
Please refer to this number for supply of spare parts
Do not remove the stroke label which is the main reference for valve calibration
Non-compliance with the main safety information, the standards in force and the assembly instructions can:
Cause danger for the safety of those carrying out manoeuvres or for third parties.
Damage the valve or adjacent objects.
Compromise the efficient operation of the valve.
2 - GENERAL ASSEMBLY INSTRUCTIONS
2.1 –ASSEMBLY ON THE SYSTEM (GENERAL NOTES)
Before assembling the valve, accurately clean the tubing with compressed air, water or another blowing fluid to eliminate
foreign bodies, welding waste and various dirt that could damage the sealing surfaces of the valve.
ATTENTION Assemble the valve with the direction arrow imprinted on the body in the same direction
as the tubing fluid.
Assembly is however recommended of a “Y” filter (our “FY” series) on the tubing, upstream of the valve.
Assembly of the valve can be carried out in the vertical or horizontal position. You are however advised to assemble
vertically to prevent wear of the trim due to the weight and relevant rubbing. For safety reasons, vertical upside down
assembly is not recommended.
ATTENTION It is forbidden to weigh the valve down with foreign objects. It is compulsory to protect the
valve from external stress.
3 –PNEUMATIC VALVES TYPE 2000-2100-2600-2700-5000-5100-5600-5700-5800
If the valve is fitted with a reducer filter, it is preferred that it is assembled vertically to promote condensate drainage
using the specific deaerator.
ATTENTION If the valve is fitted with instrumentation (pilot positioner, etc.) pay particular attention to
assembly of the piping since each strike could cause damage to the accessories or they could lose
calibration.
ATTENTION If the valve is fitted with a case handwheel for emergency manual control, ensure that during
automatic operation it is in the complete standby position, to avoid mechanically obstructing the stroke of
the valve that could be limited.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 3
The servomotor is connected to the air source using a 4x6 mm diameter pipe.
This diameter can be increased the more the distance between the air source and the valve.
The pneumatic connections are Ø 1/8” GAS F
DA input = upper part of case
RA input = lower part of case
Ambient temperature - 20 °C / + 70 °C std diaphragm EPDM
If you have ordered the product with “Low temperature” execution, you can install it with the following
temperature limits - 50 °C / + 80 °C diaphragm VMQ60
If the upper coupling has a vent, protect it with a specific joint or with a curved pipe, to avoid releasing liquids and/or
atmospheric agents in the case.
3.1 –COMMISSIONING (GENERAL NOTES)
The valves are supplied calibrated and tested, ready to work in the conditions requested by the client during the order
phase. Having ensured all warnings have been respected, slowly open the shut-off valves upstream and downstream
of the valve.
THE PACKING IS MAINTENANCE-FREE.
ATTENTION After the first working hour, check tightening of the nuts on the body unit according to the
“Nut tightening forces” table
ATTENTION Comply with the values in the “Nut tightening forces” table each time maintenance
operations are carried out.
ATTENTION If the valve is equipped with a BELLOWS seal, never rotate the stem for any reason. A
possible wrong manoeuvre could cause torsion and breakage of the bellows.
3.2 –ELECTRIC VALVES COMMISSIONING
The standard control air pressures are:
3-15 psi
6-18 psi
6-30 psi
The maximum pressure on the diaphragm of the servocontrol must never exceed the following values
Type 2000-2600-2700-5000-5600-5700-5800
35 psi - 2.5 bar
Type 2100-5100
Minimum 2 bar Max 6 bar
The air used must be strictly dry, without oil or condensate that could damage the servomotor diaphragm or the
accessories possibly assembled on the valve.
NUT TIGHTENING FORCES table
ATTENTION Always comply with the tightening valves on each maintenance
DN
NUT DESIGNATION
KEY SIZE
Nm
15-20
M8
No. 4
13
15-20
25 –32
M8
No. 6
13
15-20
40 –50
M12
No. 6
19
25-30
65-80
M16
No. 6
24
55-60
100
M16
No. 8
24
70-80
125
M16
No. 10
24
Spiral wound
60-65
PTFE
65-70
150
M20
No. 10
30
Spiral wound
60-70
PTFE
70-75
200
M20
No. 12
30
Spiral wound
60-70
PTFE
70-75

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 4
3.2.1 –PNEUMATIC VALVES WITH “DA” MANUAL HANDWHEEL COMMISSIONING
Ensure the handwheel ref. 1 in the standby position (automatic operation) is fully up. By default, nut ref.5 is blocked in
this position. To manually activate the valve, ensure there is no air in the servomotor, then unscrew the safety nut ref..5,
bringing it upwards and rotate the handwheel.1. By doing so, the handwheel acts as a piston and closes the valve.
3.2.2 –PNEUMATIC VALVES WITH “RA” MANUAL HANDWHEEL COMMISSIONING
Ensure the handwheel ref. 1 in the standby position (automatic operation) is fully screwed down. The stem ref.2 during
automatic operation goes up and down.
To manually activate the valve, ensure there is no air in the servomotor, then rotate the handwheel ref.1 anti-clockwise.
The handwheel acts as an extractor and raises the stem, opening the valve.
3.2.3 –PNEUMATIC VALVES WITH LUBRICATOR COMMISSIONING ASSEMBLED ON BONNET
During automatic operation, the lubricator must remain closed, turn the handwheel clockwise ref. 7
To grease the packing, proceed as follows: Close the main plug with the handwheel ref. 7
Unscrew the handwheel of the loader ref. 5, load with grease, screw back in the handwheel ref. 5 only by a few rotations.
Open the main plug using the handwheel ref. 7, screw in the handwheel ref.5 after loading the grease inside the packing
and close the main packing again using the handwheel ref. 7. The greasing operation is recommended every 600
working hours or when the stem moves in a linear manner.
You are advised to use anti-seize, molybdenum disulphide grease for temperatures > 200 °C
OPEN
CLOSES
OPEN
CLOSES

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 5
3.3 –CALIBRATION
The valves are supplied calibrated and tested, ready to work in the conditions requested by the client during the order
phase.
3.3.1 –PNEUMATIC ADJUSTMENT VALVES
If the adjustment valve must be calibrated again, the following tools will be necessary:
- a Bourdon spring gauge with scale 0-40 psi
- a pressure reducer filter or an air manipulator which can be finely adjusted in the range 0-35 psi
Having applied the reducer filter to the compressed air line, connect its output to the gauge and then the servomotor to
the adjustment valve to calibrate.
Check the calibration valve of the springs indicated on the descriptive label affixed to the yoke, “signal” field.
For DIRECT ACTING valves (DA=air closes), Figure 2000 DA slowly adjust the reducer by registering it at the start
value of the valve.
The procedure is also valid for valves 2600 DA–2700 DA–5600 DA
For example, if the signal planned is 3-15 psi, the valve must start to move at 3 psi and at 15 psi it must have executed
the entire stroke, reaching the compartment in the closure position.
If the start signal is under 3 psi, you must:
- loosen the nuts ref. no. 20 tightening the upper stem no. 22 with the lower stem ref. no. 6.
- screw in the lower stem ref. no. 6 to increase the start signal.
If the start signal is over 3 psi, you must:
- loosen the nuts ref. no. 20 tightening the upper stem no. 22 with the lower stem ref. no. 6.
- unscrew the lower stem ref. no. 6 to reduce the start signal.
“2000 DA”
Attention! During the calibration phase,
ensure the valve executes the full stroke.
This operation can be visually inspected by
observing the indicator plate ref. no. 21 sliding
on the indicator label ref. no. 19.
Repeat the opening/closure or
closure/opening operation until the right
values are obtained.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 6
For REVERSE ACTING valves (RA=air opens), Figure 2000 RA do as above.
The procedure is also valid for 3-way valves 2600 RA –2700 RA –5700 RA
For example, if the signal planned is 3-15 psi, the valve must start to move at 3 psi and at 15 psi it must have executed
the entire stroke, reaching total opening.
If the start signal is under 3 psi, you must:
- loosen the nuts ref. no. 20 tightening the upper stem no. 22 with the lower stem ref. no. 6.
- unscrew the lower stem ref. no. 6 to increase the start signal.
If the start signal is over 3 psi, you must:
- loosen the nuts ref. no. 20 tightening the upper stem no. 22 with the lower stem ref. no. 6.
- screw in the lower stem ref. no. 6 to reduce the start signal.
“2000 RA”
Attention! During the calibration phase, ensure
the valve executes the full stroke.
This operation can be visually inspected by
observing the indicator plate ref. no. 21 sliding on
the indicator label ref. no. 19.
Repeat the opening/closure or closure/opening
operation until the right values are obtained.
3.3.2 –ON-OFF PNEUMATIC VALVES
On-off pneumatic valves are supplied already calibrated according to the control signal, chosen by the client, and based
on the input pressure of the fluid. On-off valves do not require any calibration control operations.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 7
3.4 –MAINTENANCE
3.4.1 –BODY GASKET REPLACEMENT
3.4.1.1 –VALVES 2000 DA –2100 DA - 5000 DA –5100 DA - 5800 DA
ATTENTION IF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE
COMPLEXITY OF THE OPERATIONS FOR BODY GASKET/S REPLACEMENT, YOU ARE
ADVISED TO CONTACT OUR SUPPORT SERVICE.
For DIRECT ACTING valves (DA= air closes), Fig. “2000 DA –5000 DA” , proceed as follows:
unscrew the locking nuts ref. 17 that tighten the yoke ref. 18 for version 5000 DA unscrew the lower nuts ref. 17 that
tighten the lower flange ref. no. 1a, at the same time remove the overall servomotor with the bonnet and trim connected,
remove the old gasket ref. 9 and clean the compartment carefully, replace the gasket/s ref. 9, then proceed to assembly
by carrying out the previous operations in the reverse order.
“2000 DA”
“5000 DA” (also valid for 5800 DA)
For Double Effect valves Type 2100 DE –5100 DE (air opens –air closes) proceed as for the DA version above,
however taking care to firstly unscrew the tightening nuts ref. 17, to check the valve is in the fully open position so the
plug is distanced from the compartment.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 8
3.4.1.2 –VALVES 2000 RA –2100 RA - 5000 RA –5100 RA - 5800 RA
ATTENTION BEFORE CARRYING OUT ANY MAINTENANCE OPERATION, SUPPLY AIR TO THE
SERVOMOTOR
(1 bar ) TO COMPRESS THE SPRINGS. FROM NOW ON (always keeping air in the servomotor) YOU CAN
EXTRACT THE YOKE-SERVOMOTOR AND EACH COMPONENT CONNECTED WITHOUT THE POSSIBILITY
THE SPRINGS REMAIN WITHOUT COMPRESSION.
For REVERSE ACTING valves (RA= air opens), Fig. 2000 RA –5000 RA, to replace the gasket of the body, proceed
as above, taking care however to unscrew the locking nuts ref. 12, to supply air, at pressure that allows the valve to
execute a few millimetres of stroke, to distance the plug from its compartment,
FOR VALVES 2100 RA –5100 RA the pressure must be min. 2 bar and max 6 bar.
“2000 RA”
“5000 RA” (also valid for 5800 RA)

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 9
3.4.1.3 –3-WAY VALVES 2600 DA –5600 DA –5700 DA - 2600 RA –5600 RA - 5700 RA
ATTENTION IF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE
COMPLEXITY OF THE OPERATIONS FOR BODY GASKET/S REPLACEMENT, YOU ARE
ADVISED TO CONTACT OUR SUPPORT SERVICE.
For all 3-way Mixer (2600-5600) and Diverter (5600-5700) valves, the replacement operation of the gasket cannot be
carried out with the valve assembled on the tubing.
Once the valve is dismantled from the tubing, air must be given to the servomotor to position the valve at half stroke,
then proceed as follows: Fig. example “2600 DA –5600 DA”
Unscrewing the plug locking nuts ref. 3 with the relevant washer ref. 4, if the valve is model2600-5600, the plug remains
inside the compartments (same applies for 5700 DN15-20 ), then unscrew the locking nuts ref.17 and remove the
servomotor / bonnet / trim assembly, remove the old gasket, clear the compartment carefully and proceed to replace
the gasket ref.9.
Then, proceed to assemble in the reverse order.
If the valve is model 2700 –5700 DN25-200, the lower profile ref. 5 –see figure example “2700 RA –5700 RA” next
page, it will be removed from the stem and remain in hand together with the locking nuts and relevant washer.
Then, the servomotor / bonnet / trim assembly can be removed.
For 5700 type valves, you are always advised to firstly remove the trunk ref.1°, to facilitate the unscrewing operation of
the internal nuts and obviously to replace the lower gasket of the trunk.
.
“2600 DA”
“5600 DA”

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 10
“2700 RA”
“5700 RA”
3.4.2 –PACKING REPLACEMENT
3.4.2.2 –VALVES 2000 –2100 - 5000–5100 - 5800
ATTENTION IF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE COMPLEXITY OF THE OPERATIONS
FOR PACKING AND BELLOWS REPLACEMENT, YOU ARE ADVISED TO CONTACT OUR SUPPORT SERVICE.
The operation to replace the packing involves dismantling the trim.
For Types 2000-2100-5000-5100-5800, the replacement operation of the packing can be carried out with the valve
assembled on the tubing.
For DIRECT ACTING (DA= air closes) and DOUBLE EFFECT (DE) valves giving air is not necessary
For REVERSE ACTING valves (RA = air opens) give air, at a pressure that allows the valve to perform a few
millimetres of stroke, to distance the plug from its compartment.
Fig. “2000 RA” – “5000 RA” proceed as follows:
unscrew the locking nuts ref. 17 that tighten the yoke ref. 18, at the same time remove the overall servomotor with the
bonnet and trim connected and then proceed as follows:
unscrew the nuts ref. 4 with the washer ref.3, extract the plug profile ref. 5, remove the complete bonnet ref.7 and
proceed to replace the packing, as indicate din the Fig. “PACKING”.
EXCEPTIONS:
1. On diameters DN125-200 this operation involves removal of the bonnet with the closure floating flange.
2. On valves Type 5800 the plug is integrated with the stem, therefore it should be unscrewed from the servomotor
shaft
When the packing is changed, the body gasket must also be changed, see 3.4.1
Then proceed to assemble the new packing following the previous operations in the reverse order, see Fig. “PACKING”.
Proceed to assemble the components in the reserve order.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 11
“2000 RA”
“5000 RA” (also valid for 5800 RA)
Fig. “PACKING”

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 12
3.4.2.3 –VALVES 2600 –2700 - 5600–5700
ATTENTION IF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE COMPLEXITY OF THE
OPERATIONS FOR PACKING AND BELLOWS REPLACEMENT, YOU ARE ADVISED TO CONTACT OUR
SUPPORT SERVICE.
The operation to replace the packing involves dismantling the trim.
For Types 2600-2700-5600-5700, the replacement operation of the packing can only be carried out with the valve
dismantled from the tubing.
Give air, at a pressure that allows the valve to perform a few millimetres of stroke, to distance the plug from the
two compartments, considering half stroke as the ideal position.
Fig. example “2600 DA –5600 DA”, proceed as follows:
Unscrewing the plug locking nuts ref. 3 with the relevant washer ref. 4, if the valve is model 2600-5600, the plug remains
inside the compartments (same applies for 5700 DN15-20 ), then unscrew the locking nuts ref.17 and remove the
servomotor / bonnet / trim assembly, then proceed as follows:
remove the complete bonnet ref.7 and proceed to replace the packing as indicated in Fig. “PACKING” page 11
EXCEPTIONS:
1. On diameters DN125-200 this operation involves removal of the bonnet with the closure floating flange.
If the valve is model 2700 –5700 DN25-200, the lower profile ref. 5 –see figure example “2700 RA – 5700 RA” page
10, it will be removed from the stem and remain in hand together with the locking nuts and relevant washer.
Then, the servomotor / bonnet / trim assembly can be removed.
For 5700 type valves, you are always advised to firstly remove the trunk ref.1°, to facilitate the unscrewing operation of
the internal nuts and obviously to replace the lower gasket of the trunk.
When the packing is changed, the body gasket must also be changed, see 3.4.1
Then proceed to assemble the newpacking following the previous operations in the reverse order, see Fig. “PACKING”.
Then, proceed to assemble in the reverse order.
3.4.3 –REPLACEMENT OF THE PLUG PROFILE - SOFT SEAL and COMPARTMENT
ATTENTIONIF THE VALVE IS FITTED WITH A SOFT SEAL, CONSIDERING THE COMPLEXITY OF THE
OPERATIONS FOR TRIM REPLACEMENT, YOU ARE ADVISED TO CONTACT OUR SUPPORT SERVICE.
EXCEPTIONS:
1. The UNIWORLD valves compartment is screwed onto the valve body with sealing paste. To replace it, the
entire valve body must be changed.
2. For 3-way valves Type 2600-2700-5600-5700, replacement of the plug profile and the compartments must be
carried out in our plant due to the complexity of the procedure.
3. For 2-way valves Double Seat Type 5800, replacement of the plug profile and the compartments must be
carried out in our plant due to the complexity of the procedure.
For DIRECT ACTING valves (DA= air closes), DOUBLE EFFECT (DE) Fig. “2000 DA –5000 DA”, page no.7 proceed
as follows:
unscrew the locking nuts ref. 17 that tighten the yoke ref. 18 for version 5000 DA always unscrew the lower nuts ref. 17
that tighten the lower flange ref. no. 1a, at the same time remove the overall servomotor with the bonnet and trim
connected, unscrew the nuts ref.4 and remove the washer ref.4, then remove the plug profile ref.5 and change the
profile.
THE SAME PROCEDURE MUST ALSOBE APPLIED TO REPLACE THE SOFT SEAL. IN THIS CASE, REMOVE THE
PROFILE AND REPLACE THE SOFT SEAL RING IN PTFE or PTFE/GR FITTED IN THE BOTTOM –see “SEAL
TIGHTENING FORCES TABLE”
When the profile is changed, the body gasket must also be changed, see 3.4.1
Proceed to assemble in the reverse order.
For REVERSE ACTING valves (RA= air opens), Fig. “2000 RA” – “5000 RA” page no. 11, to replace the gasket of the
body, proceed as above, taking care however to unscrew the locking nuts ref. 17, to supply air, at pressure that
allows the valve to execute a few millimetres of stroke, to distance the plug from its compartment.
SOFT SEAL TIGHTENING FORCES TABLE
DN 15-20
DN 25-32
DN 40-50
DN 65-100
DN 125-200
6/7 Nm
8/9 Nm
9/10 Nm
8/9 Nm each screw
9/10 Nm each screw

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 13
3.4.4 –DIAPHRAGM REPLACEMENT
To replace the diaphragm, having unscrewed the perimeter screws of the servomotor, proceed as indicated in the Fig.
“ACTION”
DA = unscrew screw ref.29, remove spacer ref. 25 (Attention ! position as in the figure), replace the diaphragm ref. 26
RA = remove the spring, unscrew screw ref.29, remove the bushing ref. 28 (Attention ! position as in the figure), remove
the diaphragm plate ref. 27, replace the diaphragm ref. 26
Proceed to assemble in the reverse order.
The tightening force of the screw ref.29 must be 20Nm.
3.4.5 –INVERSE ACTION
The inverse action operation can be carried out with the valve assembled on the piping.
Ref. Fig. “ACTION” proceed as follows:
-Invert the parts as displayed in the drawing
-The tightening force of the screw ref.29 must be 20Nm.
ATTENTION check the signal function if the springs are compatible, e.g. you
want to pass from a RA version 6-18 psi to a DA version 3-15 psi, contact our
After-Sales Service to check the spring type.
Fig. “ACTION”
DA VERSION
RA VERSION

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 14
4 –OPERATING ANOMALIES
Some problems are outlined below which can occur during operation of the valves and the measures to implement.
PROBLEMS FOUND
CAUSE
MEASURE
The stem does not run the entire
stroke and/or stroke incomplete
1. Air leak in connection pipe
between the case and the control
tool and/or the air source
1. Localise and eliminate the leak
2. Air leak from actuator perimeter
2. Tighten the perimeter nuts of the
actuator
3. Air leaking from actuator - broken
diaphragm
3. Replace the diaphragm
4. Waste deposits between
compartment and plug
4. If seizure not generated, remove
deposits
5. Indicator label movement
compared to index
5. Reposition the stroke reference
based on index
6. The instrumentation does not
supply the correct signal and is
necessary to execute stroke
6. Search the causes on the
instrumentation
7. The positioning unit on the valve
needs re-calibration
7. Proceed to “setting” the positioner
in compliance with the relevant
manual
The stem moves in jolts
1. Stem seized and/or damaged
1. If possible, polish the stem,
otherwise replace the “trim”
2. Sediment in packing chamber
2. Replace the bonnet with packing
Heavy seal
compartment/plug leak
1. Soft seal class VI damaged
1. Replace the soft seal class VI
2. Metal seal class IV or V damaged
2. If possible, grind the cone of the
plug with the edge of the
compartment with “grinding
paste”
Otherwise, replace the trim
3. Differential pressure between
upstream and downstream of the
valve too high
3. Contact our Servicing to ask for a
quote for replacement, if possible,
of the actuator
Packing leak
1. Worn rings or seals
1. Replace the bonnet with packing
2. Soft seal broken
2. Given the complexity of the
operation, contact our Servicing

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 15
5 –RISK ANALYSIS
This document assesses the risks relating to the equipment indicated above, which can arise during its use, installation
or movement, in compliance with the provisions of the Directive PED 2014/68/EU. The provisions are also indicated to
comply with to avoid them arising.
The classification of the SOLUTIONS implemented is as follows:
1. Solution to eliminate and/or reduce the risk.
2. Application of the appropriate safety measures against the risks which cannot be eliminated
3. Information for users
CAUSE
EXCESS PRESSURE OVER THE MAXIMUM PERMITTED PRESSURE “PN”
EFFECT
Broken body, cracks, permanent deformations
DANGER
Projection of metal parts, leaking fluid
SOLUTION
1. The body unit is constructed with due safety margins.
2. The system must be fitted with the “Safety Accessories” planned by the Decrees in place
in the country of origin.
3. The label outlines the maximum permitted pressure “PN”
CAUSE
EXCESS PRESSURE OVER THE MAXIMUM PERMITTED TEMPERATURE “TS”
EFFECT
Internal excess pressure
DANGER
Breakage or deformation of the body, leaking fluid
SOLUTION
1. The body unit is constructed with due safety margins.
2. The system must be fitted with the “Safety Accessories” planned by the Decrees in place
in the country of origin.
3. The maximum temperature is declared on our “data sheet” specifications and must be
checked by whoever sizes and/or chooses the valve
CAUSE
REACTION FORCE TO EXTERNAL STRESS
EFFECT
Deformation, structural failure
DANGER
Breakage or deformation of the body, leaking fluid
SOLUTION
1. Check there are not external loads, it is compulsory for the installation technician to
protect the valve from external stress.
2. This manual, in section 2 point 2.1 describes the indications in point 1 and 2.
3. The installation technician must check the valve is free of hazards due to external reaction
forces and/or stress.
CAUSE
WORKING TEMPERATURES
EFFECT
Metal parts at high temperature
DANGER
Burns
SOLUTION
1. Install the valve in a protected area or insulate the valve.
2. The user must signal the hazard using suitable signs indicating the parts can reach high
and dangerous temperatures. It is indicated in section 1 of the manual. “General safety
information”
3. Wear adequate personal protection
CAUSE
INSTALLATION AND/OR USE NON-COMPLIANT WITH THE PROVISIONS, THE
DIRECTIVES IN FORCE AND NATIONAL LEGISLATION
EFFECT
Inappropriate installation, breakage of the valve
DANGER
Poor system operation, leaking fluids
SOLUTION
1. The installation technician and/or user must install the valve in compliance with the
Directives in force and national legislation
2. Not applied
3. In this manual, it is described in point 1. “General safety information”

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 16
CAUSE
VALVE MAINTENANCE WITH SYSTEM PRESSURISED
EFFECT
Incorrect maintenance
DANGER
Poor operation of the system, danger of projection of pressurised parts, danger of leaking
fluids
SOLUTION
1. Maintenance activities must be carried out with the valve shut off.
2. The valve must be free of hydrostatic pressure.
3. The valve must be shut off as described in this manual in point 1. “General safety
information”
CAUSE
EXTERNAL ENVIRONMENT, ADDITIONAL LOADS
(Wind and Earthquake not applicable)
EFFECT
Deformation, structural failure
DANGER
Breakage and/or deformation of the body, leaking fluid
SOLUTION
1. Support all the connection tubing that weighs on the valve with specific structures and/or
supports.
2. The valves do not allow external loads
3. The support structures and the relevant anchorage and/or foundation tie rods must be
calculated in advance.
6 –ATEX DIRECTIVE 2014/34/EU
The ATEX 2014/34/EU certified valves are intended for use in
AREAS WITH PRESENCE OF POTENTIALLY EXPLOSIVE ATMOSPHERES!
ATTENTION The materials not yet used on the system must be stored in areas that maintain all the
technical characteristics intact of the equipment and compliance, up to installation, therefore they
must be kept in places that are protected, clean and dry.
All plugs used to cover the fluid inlets and the air connections should be kept and maintained intact
up to installation.
6.1 –LABEL DATA REGARDING SAFETY
The additional ATEX label on the servomotor
outlines the following data:
II 2 GD = equipment for surface systems in the
presence of:
Gas, vapour or mist CAT. 2, suitable for zone 1
and 2 dust CAT. 2, suitable for zone 21 and 22
Exh IIB T6…T1 Gb ( GAS group IIB )
Exh IIIC T6…T1 Db (DUST group IIIC )
Via Lecco 69/71 20864 Agrate Brianza (MB) ITALY
II 2 GD Exh IIB T6…T1 Gb
Exh IIIC T6…T1 Db
( T ref. body group )
Do not open the equipment in an Explosive Atmosphere
–20 °C ≤ Ta ≤ + 70 °C ( Actuator ) Year 2020
-20°C ≤ Ta ≤ +70°C
-50°C ≤ Ta ≤ +80°C
Standard Diaphragm
Low Temperature Diaphragm
T6
T5
T4
T3
T2
T1
85 °C
100 °C
135 °C
200 °C
300 °C
450 °C
ATTENTION The temperature does not depend on the equipment, but mainly on the operating
conditions, therefore the marking relates to the maximum operating temperatures of the body unit of
the valve or the maximum design temperature of the valve body.
THE USER MUST COMPARE THE TEMPERATURE OF THE ATEX ZONE WITH THE
TEMPERATURE CORRESPONDING TO THE HEAT TRANSFER FLUID USED.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 17
ATTENTION Ensure the valve was chosen with the seals for the fluid contained in the body unit
(TYPE OF PACKING-SEAL) and also check the unit for substances in the air, the relevant ignition
temperature and compare with the temperature class of the equipment. The ignition temperature of
the gaseous mix must always be higher than the maximum surface temperature. Basically, a safety
margin is considered of 15/20% between the ignition temperature and the marking temperature.
For a cloud of dust, you must know the composition and determine the ignition point, taking into
consideration that a layer can cause an explosion of the cloud above. Therefore, for preventive
purposes, determine the exact composition and the possible layer that could form on the equipment.
The UNIWORLD Series Valves –“Non-Electrical Equipment” are constructed with non-electrical type protection for
constructional safety “c” – EN 80079-37
TYPE OF PACKING - SEAL
PACKING SEAL - MAINTENANCE-FREE - LOCKED PACKING RING NUT
BELLOWS SEAL
MAINTENANCE-FREE
Valid for Heat Transfer fluids:
STEAM –OVERHEATED STEAM - WATER –HOT WATER –
OVERHEATED WATER
COMPRESSED AIR AND INERT GASES
Valid for:
DIATHERMIC OIL
HAZARDOUS LIQUIDS
GAS GROUP II ( IIA –IIB)
ATTENTION It is the installation technician and/or user’s task to take all the measurements
necessary to insulate the body unit and the bonnet that conduct heat and that determine the
maximum surface temperature.
To determine the type of dust, the maximum surface temperature must be known and
compatible. To prevent ignition of dusty atmospheres, limit the maximum surface
temperature. This must be under the lowest of these two values:
2/3 of the auto-ignition temperature of the cloud of dust considered.
at the auto-ignition temperature of a layer of dust 5mm thick, reduced by 75 °C.
Also, for dust, regarding the stem exiting the valve body, ensure you have correct blowing or periodic
cleaning, SINCE THE PART CANNOT BE INSULATED.
ATTENTION The user is responsible for checking the packing seal. When the BELLOWS SEAL is
used for GAS GROUP II, as soon as its breakage is determined, the packing will only work as an
emergency seal for a few hours, THEREFORE SECTION AND REPLACE THE VALVE.

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 18
ATTENTION The ambient temperature (specified on the label) in which the pneumatic actuator of
the valve can work is between:
- 20 °C / + 70 °C std diaphragm EPDM
- 50 °C / + 80 °C std diaphragm VMQ60
Obviously, the maximum surface temperature is the ambient temperature
ATTENTION DO NOT OPEN THE EQUIPMENT IN AN EXPLOSIVE ATMOSPHERE.
BEFORE OPENING, ENSURE THE EQUIPMENT FLUID INSIDE IS NOT PRESSURISED AND
THAT IT HAS APPROPRIATELY COOLED.
Carry out every maintenance operation, according to the manual, in total safety!
6.2 - ASSEMBLY INSTRUCTIONS - CALIBRATION AND MAINTENANCE
For assembly, see section 2
For calibration see section 3 - point 3.4
For maintenance see section 3 - point 3.4
6.2.1 –VALVE GROUND
Connect the ground as indicated in the figure.
The same valve should be grounded on the system.
Terminal 1
Terminal 2

UNIWORLD Series M/UNIWORLD-P/E ed. 01 2020
WWW.CONFLOW.IT Page 19
6.3 –Additional RISK ANALYSIS
This document assesses the risks relating to the equipment indicated above, which can arise during its use, installation
or movement, in compliance with the provisions of the ATEX Directive 2014/34/EU. The provisions are also indicated to
comply with to avoid them arising.
The classification of the SOLUTIONS implemented is as follows:
Solution to eliminate and/or reduce the risk.
Application of the appropriate safety measures against the risks which cannot be eliminated
Information for users
CAUSE
HIGH SURFACE WORKING TEMPERATURE IN ACCORDANCE WITH SUFFIX “T”
T6…T1
EFFECT
Metal parts at high temperature, Danger of Explosion
DANGER
The surface temperature of the body unit can reach (not considering heat dissipation caused
by the body) high values that may not be compatible with the fluid in the source body.
SOLUTION
Check the ignition temperature of GASEOUS and/or DUST mixes and compare them with
the maximum surface temperature of the valve.
Insulate the complete bodyunit, BODY AND BONNET, using suitable and appropriately thick
material to reduce the surface temperature and set it at a limit 20% under the ignition
temperature of the GASEOUS and/or DUST mix formed in the environment.
For dust, reduce the surface temperature by 2/3 of the auto-ignition temperature of the cloud or
reduce the surface temperature by 75°C of the auto-ignition temperature of a 5 mm layer of
dust.
FOR GROUP IIIC the maximum surface temperature must be ≤120 °C
Ensure adequate personal protection
6.4 –HEALTH AND SAFETY
ATTENTION Comply with all the health and safety standards planned for the site (classified area) where
the equipment is installed in strict compliance with the employer's risk analysis.
ATTENTION Wear the planned personal protective equipment.
ATTENTION! Do not remove or carry out maintenance on the valve, without having firstly completely
depressurised it and, where necessary, cleaned the residue of any toxic, explosive or flammable
substances away.
ATTENTION Do not handle valves that were used in the presence of harmful substances, unless they
were completely decontaminated and certified as safe for handling
ATTENTION Ensure that potentially flammable dust is reduced to a minimum through accurate and
frequent cleaning and/or using suitable guards.
ATTENTION Never use a valve for conditions that exceed the working conditions. Contact our technical
office for further information.
Never change or alter the valves without consulting the manufacturer.
6.5 –PRECAUTIONS FOR USE
To guarantee full compliance with the requirements of the ATEX Directive 2014/34/EU, fluids compatible with the
external environment must be used as heat transfer fluids.