Valfonta S3 User manual

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 1 - manual S3-17A-ENG February 2017
INSTRUCTIONS: OPERATION AND INSTALLATION
PRESSURE RELIEF VALVE SPRINGLOADED
MODEL S3

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 2 - manual S3-17A-ENG February 2017
INDEX
PAGE
1
IDENTIFICATION PLATE LEGEND
3
2
MAIN FEATURES
5
3
OPERATION
5
4
SCHEME
7
5
ASSEMBLY
8
6
POSSIBLE TROUBLESHOOTING
10
7
INSTALLATION DRAWINGS
11
8
RECEIPT ON SITE
12

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 3 - manual S3-17A-ENG February 2017
1. IDENTIFICATION PLATE LEGEND
a) CE marked is required in accordance with PED 2014/68/UE
b) CE marked is NOT required in accordance with PED 2014/68/UE
SERIAL N. VALVE IDENTIFICATION NUMBER. VALFONTA WILL NEEDS THIS NUMBER FOR SPARE PARTS
OR COMMENTS RESPECT OF THIS VALVE.
MOD. VALVE MODEL
DN VALVE NOMINAL DIAMETER
PN VALVE NOMINAL PRESSURE.
MEDIUM FLUID
P.IN INLET PRESSURE
P.OUT OUTLET PRESSURE
BODY BODY MATERIAL
KVS. KV VALVE

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 4 - manual S3-17A-ENG February 2017
ATEX marked required according to DIRECTIVE 94/9/EC
(PENDING TO INCLUDE IN FILE)
VALFONTA
E 08915 – Badalona (ESPAÑA)
TYPE: EXCESS PRESSURE VALVES SELF - ACTUATED
MANUFACTURING YEAR: 2014
MANUFACTURING NUMBER:
II 2 G D
c IIC Tx
c IIIC TxºC
TECHNICAL FILE IN CUSTODY : LOM
CERTIFICATION NUMBER: LOM 14.034 U
Reference
Denomination
II 2
ATEX category, zones 1 & 21
G
Class I application (flammable liquids and gases)
D
Class II application (combustible dust)
c IIC
Safety construction protection mode for substances
IIC
C IIIC
Safety construction protection mode for substances
IIIC
Tx / TxºC
Termal class according fluid temp. used
LOM
Number of certification from ExNB (LOM)

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 5 - manual S3-17A-ENG February 2017
INSTRUCTIONS: OPERATION AND INSTALLATION
2. VALVE FEATURES
3. OPERATING
DN15 to DN100 (DN125 and DN150 consult)
Pressure relief valve it’s used to maintain the pressure
upstream of the valve to an adjusted set point.
When upstream pressure rises above a set point, the
valve opens proportionally pressure rising.
This series of regulators is suitable for steam, gases
(group 1 and 2) and liquids.
A relief pressure valve is not a safety valve, and then if
necessary, an overpressure protection must be
installed.
The valve opens when inlet pressure rises.
The regulator must be carefully handled, transported
and stored. Protect the regulator against adverse
influences, such as dirt, moisture or frost before it is
installed.
When regulators are too heavy to be lifted by hand,
fasten the lifting sling at a suitable place on the valve
body.
Do not attach any lifting equipment, slings or supports
to mounting parts, such as the adjusting screw or
control line.
DIN PN25 Nodular Iron GJS-400-18-LT (0.7043)
DIN PN25 Bronze RG-10 (EN-1982 CuSn10-
CC480K)
DIN PN40 Carbon steel GP240GHN (1.0619)
DIN PN40 Stainless steel CF3M (1.4404)
Stainless steel AISI 316L trim
Top guided standard construction
Connection Flanged EN and ANSI
On request: Threaded BSP or NPT, BW, SW,…
Shut off capabilities:
-Class IV (metal to metal)
-Class VI (PTFE+GR seat)
On request, PEEK, NBR, EPDM seal, stellited faced seat,…
Full port as standard. Reduced port on request
Setting pressure
0,5 - 20 barg (with different
springs)
Max. permissible
temperature
0.7043 and 1.0619 -10 to 220ºC
1.4408 -30 to 220ºC
Ask for special gaskets up to 250ºC
Seal / Packing /
Gaskets
VIRGIN PTFE UP TO 180ºC
PTFE+GRAPHITE UP TO 220ºC
Special features
Handwheel regulation, specials gaskets, Super
Duplex construction, bronze construction, …
Approvals
Quality system ISO 9001, Pressure equipment
Directive according 2014/68/UE and Atex Directive
according 2014/34/UE (file pending to include).
SELF-OPERATED PRESSURE
REGULATORS
PRESSURE RELIEF VALVE MODEL S3

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 6 - manual S3-17A-ENG February 2017
Special ATEX instructions
-No limitation of use due to the ATEX substance.
-Limitations due to thermal class:
Class I (flammable liquids and gases)
TEMPERATURE CLASS
MAX. SURFACE
TEMPERATURE
APPROPRIATE FOR
SUBSTANCES WITH IGNITION
TEMPERATURE
T1
450ºC
Ti >450ºC
T2
300ºC
Ti >300ºC
T3
200ºC
Ti >200ºC
T4
135ºC
Ti >135ºC
T5
100ºC
Ti >100ºC
T6
85ºC
Ti >85ºC
-Class II (combustible dust)
T(x) ≤ 2/3 MITcloud
T(x)≤ 5 mm MITlayer– 75 K

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 7 - manual S3-17A-ENG February 2017
4. SCHEME
This device must be installed by specialized personnel with knowledge and experience. They
must know about the current regulations in order to judge the risks that may involve this
work.

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 8 - manual S3-17A-ENG February 2017
5. ASSEMBLY
The pipe must be cleaned carefully before installing
the valve, to prevent that any small element or
impurity may affect the reducing valve work.
It is also very important to install a strainer in front
of the valve in order to protect it.
Pressure relief valve must be installed in a horizontal
pipe and the direction of the flow should be in the
same direction that shows the valve body.
When the steam is condensed, the pipe should be
inclined to help with the evacuation.
Assembly Position
Recommended installation position in horizontal
pipeline.
The supports holding the valve will be done in the pipe
and as close as possible to the flanges but never fixed in
the valve or the actuator, to eliminate unnecessary
tensions.
Installation
Typical installation, according to the scheme:
Start-up
Open the check valves slowly (to prevent water hammer).
First on the upstream pressure side.
Regulation of the valve
Valfonta sets the pressure value approximately at
requested value.
To adjust the set pressure (upstream pressure):
-Valves with handwheel: turn the handwheel.
-Valves without handwheel: Unscrew cover cap
(item 15) and turn the regulating nut (item 13)
with a standard tube tool.
Compressing the spring (turn right) increases the set
upstream pressure and decompressing the spring,
decreases.
The pressure gauge located on the upstream pressure
side allows the adjusted set point to be monitored.

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 9 - manual S3-17A-ENG February 2017
ATEX requirements
-IMPORTANT! The respective national regulations as well as general engineering rules governing the installation and
operation of equipment in explosive atmospheres must be observed.
-The valves are ATEX category "II 2 GD" according to 100a ATEX Directive (94/9/EC).
-IMPORTANT! The device can only be used in potentially explosive locations Class I (gases, vapors or liquids) Zones 1
and 2 and Class II (combustible dusts) areas 21 and 22, according to the specifications in the Directive 1999/92/EC , as
well as the Electro technical Regulations.
Electrostatic discharges
Under certain conditions, electrostatic discharges that are capable of ignite explosive atmospheres, can be produced. The most
important measure of protection is equipotential bonding of all conductive parts and earthing.
In order to avoid electrostatics discharges, the installation of devices and control elements must be earthing.
-IMPORTANT! Connecting the valves to process: it should be ensured electrical continuity of <106Ω.
-IMPORTANT! National regulations on maintenance, service, inspection and repair of apparatus and equipment for
explosive atmospheres, as well as general engineering rules must be observed.
COMMISSIONING
IMPORTANT! User is the only responsible for a safe use of the devices.
In use, parts that affect the explosion protection of the valves must be checked and act accordingly, f.e.:
-Fixing Elements -screws, nuts, shafts, etc.- see technical documentation of the product supplied. It must be ensure its
tightening, proper operation and / or change when necessary. After 2.500h of working or 6 natural months (whichever
comes first).
-The seals will be replaced by original spare parts: every 25,000 hours or when periodic inspections result said (the lower
range).
-Any other action arising from inspection and maintenance plan, set by the user
-IMPORTANT! If repainting the valves and / or spare parts, ensure there is no paint on moving parts, mounting flange and
closure sealing.
INSPECTIONS
-IMPORTANT! National Regulations must be observed. It is user’s responsibility to establish an inspection and
maintenance plan for these devices in order to ensure their proper use.
-Inspections must be performed by "qualified staff” because of the kind of equipment and / or installation.
-Purposes can be used to guide the requirements of the UNE-EN 60079-17, in order to establish the inspection plan.
-IMPORTANT! When inspections are "Detailed" or it is degree is “Close”, the devices will be completely shut out.
MAINTENANCE
Spare parts are subject to normal wear. They must be inspected and replaced when necessary.
The frequency of the inspections and maintenance depends on the severity of the service conditions. This section provides
instructions about replacement, packing, stem, plug and seat.
All maintenance operations can be performed with the valve body installed.
Before any maintenance, ensure the valve is depressurised and clear of media, and isolate it both upstream and downstream. Be
sure the temperature isn’t dangerous.
IMPORTANT! Use only genuine parts or recommended by VALFONTA, SL

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 10 - manual S3-17A-ENG February 2017
6. POSSIBLE TROUBLESHOOTING
Trouble
Possible reasons
Recommended response
Pressure exceeds
the adjusted set
point
Re-adjust setting pressure
Re-adjust setting pressure
Seat and plug worn down
Disassemble the regulator and replace damaged parts
Pressure drops
below the
adjusted set point
Valve installed against the flow; see
arrow on body
Check direction of flow. Install valve correctly
Valve or KVS coefficient too small
Check valve sizing. Install larger valve, if necessary
Foreign particles blocking the plug
Disassemble the regulator and replace damaged parts
Control disorders
Particles between seat and plug
Remove foreign particles. Replace damaged parts
Upstream
pressure
fluctuates
Valve too large
Check valve sizing. Select smaller KVS coefficient, if
necessary
Loud noises
High flow velocity, cavitation
Check sizing. Install flow divider with gases and
steam
.
.
Technical data
Nominal pressure
PN16-PN25-PN40 or CLASS 150-CLASS 300
Max. permissible temperature: body
Refer to technical sheet HT-101
Max. permissible temperature: plug
NBR
EPDM, FPM
PTFE+GR
PEEK
80ºC
150ºC
220ºC
250ºC
Max. permissible temperature: Packing
PTFE+GRAPHITE UP TO 220ºC

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 11 - manual S3-17A-ENG February 2017
7. INSTALLATION DRAWING
DN
15
20
25
32
40
50
65
80
100
Kv
(m³/h)
3.5
5
9
15
22
35
60
85
130
Cv
(gpm)
4
5.8
10.4
17.5
25
41
70
100
152
A(EN 558-1)
(mm)
130
150
160
180
200
230
290
310
350
AANSI150
(mm)
(inches)
○
○
184
7,25”
-
222
8,75”
254
10”
276
10,86”
298.5
11,75”
352.5
13,88”
AANSI300
(mm)
(inches)
○
○
197
7,76”
-
235
9,25”
267
10,51”
292
11,5”
317.5
12,50”
368
14,49”
L(sealing cap)
(mm)
320
320
320
320
360
360
410
410
450
L(Handwheel)
(mm)
410
410
410
410
450
450
520
520
570
Weight
(kg)
10
10
12
13
16
18
30
40
50
○ Available under request
Flanged type
Threaded type

VALFONTA
Pressure Relief Valve S3 - Operation and Installation - 12 - manual S3-17A-ENG February 2017
8. RECEIPT ON SITE
ATENTION! Transport and storage of these devices should be in their original packaging.
RECEIPT ONSITE
When receiving the equipment on site, it should be unpacked to check that they agree with the request and delivery notes. At
least, verification shall be performed:
- Visual,
- Mechanical
After these checks, if it will not be installed immediately, it will keep in dry and protected atmosphere.
Visual Inspection
Check that during transport, unloading and installation, the devices have not been damaged.
Mechanical Verification
Check all moving parts of the apparatus, as well as screws and other elements fulfill their mission.
IMPORTANT! If is observed abnormality during these guidelines reception, contact urgently VALFONTA to clarify responsibilities
and put the devices in correct status.
The contents of that document are subject to change without notice.