APV DELTA DA3+ SLD User manual

Read and understand this manual prior to
operating or servicing this product.
Operating Manual
DELTA DA3+ SLD
Double Seat Valve

Content : Page:
1
UK
1. General Terms 2
2. Safety Instructions 2
3. Mode of Operation 3 - 4
3.1 Valve in "closed" position
3.2 Valve in "open" position
4. Control Unit 5 - 6
4.1 Functional description of CU33 Direct Connect Control Unit
with 2 Hall sensors + 2 external proximity switches
5. Cleaning 6 - 7
5.1 Flow areas
5.2 Seal surfaces
5.3 Leakage chamber
5.4 Cleaning recommendation
5.5 Flushing quantity
5.6 Cleaning of upper area
5.7 Cleaning of lower area
6. Installation 8
6.1 Welding instructions
7. Dimensions / Weights 9
8. Technical Data 10 - 11
8.1 Air consumption / closing times
8.2 Flow rates
8.3 Valve stroke open / closed
9. Maintenance 12
10. Service Instructions 13 - 17
10.1 Dismantling from pipe system
10.2 Disassembly of wear parts (product-wetted parts)
10.3 Actuator / Main cylinder (maintenance)
10.3.1 Dismantling of seals and disassembly of seat lift actuator and main cylinder
10.3.2 Installation of seals and assembly of seat lift actuator and main cylinder
10.4 Installation of seals and assembly of valve
10.5 Installation of valve insert
10.6 Installation of Control Unit
11. Assembly and Disassembly Tools 18
12. Assembly Tool for Middle Seal 19
13. Trouble Shooting 20
14. Spare Parts Lists and Lubrication Chart 21
(see annex)
DA3SLD DN40 - 150 RN 01.053.76
DA3SLD Inch 1.5” - 4” RN 01.053.76 - 1
DA3 Lubrication Chart RN 260.064 - 1
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3SLD
Operating Manual : Rev. 0

This operating manual should be read carefully by the competent
operating and maintenance personnel.
We point out that we will not accept any liability for
damage or malfunctions resulting from the non-compliance
with this operating manual.
Descriptions and data given herein are subject to
technical changes.
2. Safety Instructions
DANGER!
- The technical safety symbol draws your attention to important
directions of operating safety.You will find it wherever the activities
described are bearing risks of personal injury.
- Disconnect electrical and pneumatic connections.
- Depressurize the line and cleaning system and discharge the lines,
if possible, before any maintenance work.
- Observe Service Instructions to ensure safe maintenance
of the valve.
- Connections which are not used must be sealed by a plug.
- A safe discharge of the cleaning liquids must be ensured.
- The valve must only be assembled, disassembled and
reassembled by persons who have been trained in APV valves
or by APV service team members. If necessary, contact your local
APV representative.
- Welded actuators are preloaded by spring force.
Opening of the actuators is strictly forbidden.
Danger to life!
Actuators which are no longer used and / or defective
must be disposed in professional manner.
Defective actuators must be returned
to your APV Solutions & Services company
for their professional disposal and free of charge for you.
Please address to your local APV representative.
1. General Terms
2
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
!
!

3. Mode of Operation
3
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
Due to its construction and mode of operation as well as to the
use of high quality stainless steel and adequate seal materials,
the double-seat mixproof valve DELTA DA3+SLD is suited for
applications in the food and beverage industries as well as in the
pharmaceutical and chemical industries.
- The valve opens from the top to the bottom in low leakage operation
(unpressurized drain of fluid residues via the annular cleaning gaps
in the seat area).
- Separation of two line passages by two balanced and
independently operating valve slides with intervening
leakage chamber.
- Arising leakages at the seat seals are discharged at (E) in
depressurized state.
- The standard double seat valve DELTA DA3+ SLD is equipped
with a Control Unit.
The 2 Hall sensors in the control unit and the two externally
installed proximity switches provide for the detection of the
following valve positions:
sensor 1 = valve position “seat lifting lower valve shaft”
sensor 2 = valve position “open”
sensor 3 = valve position “closed”
sensor 4 = valve position “seat lifting upper valve shaft”
- Operation by pneumatic actuator with air connection at (B).
Reset by spring force into the safety limit position "closed".
B = Valve open
- Maintainable actuator (see 11.3).
- Cleaning of the leakage chamber is undertaken via the cleaning
connection (C).
- The Cleaning of the seat and shaft seal areas is realized by
operation of the air connections:
A1 = lifting of lower shaft
A2 = lifting of upper shaft
- Reset by spring force.
A1
seat lift cylinder
main cylinder
spring cylinder
valve housing
drain pipe
CIP
cleaning connection
B
C
E
A2
sensor 2
sensor 4
sensor 3
sensor 1
operating cam

Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
3. Mode of Operation
4
UK
DELTA DA3SLD-UK0.qxp / 12.2007
3.1 Valve in "closed" position
The lower and upper valve shafts are closed by spring force and
safely separate the different fluids A and B.The leakage chamber L
which is situated between the two valve shafts, provides for a free
and absolutely depressurized discharge to the bottom. The valve
shafts are balanced and, thus, safe against pressure hammers.
3.2 Valve in "open" position
By control of the actuator, the upper valve shaft is pressed against
the seal of the lower valve shaft.Thus, the leakage chamber L is
closed against the product chamber.
Then the two valve shafts move downwards into the open position.
A connection between the two pipelines A and Bis produced.
fig. 3.2
fig. 3.1
A
B
A
B
L
L

5
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
4. Control Unit
CONTROL UNIT
The following different designs are available:
4.1 Functional description of CU33 Direct Connect Control Unit
with 2 Hall sensors + 2 external proximity switches
adapter
CU33 adapter DA3
08-48-471/93
Benennung:
ref.No.:
3 soleniod valves (EMV)
AS-interface 2.1
ref.No.: CU33 AS-interface 2.1 Safety Stop SLD 000 08 - 45 - 074/93
Profibus
ref.No.: CU33 DA3+ Profibus 000 08 - 45 - 080/93
functional description, see separate operating
manual of control units
Direct Connect
ref.No.: CU33 Direct connect with 2 Hall sensors 000 16 - 31 - 249/93
+ 2 external proximity switches
sensor 2
(internal Hall sensor)
sensor 1
(internal Hall sensor)
sensor 3
proximity switch
sensor 4
proximity switch

6
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
4. Control Unit
4.1 Functional description of CU33 Direct Connect Control Unit
with 2 Hall sensors and 2 external proximity switches
feedback
sensor sensor 1 internal
Hall sensor
sensor 2
internal
Hall sensor
sensor 3
external
proximity switch
sensor 4
external
proximity switch
valve position
closed 0111
open 1000
upper seat lift 0110
lower seat lift 0011
We recommend to use our APV standard types:
three-wire proximity switch
operating distance: 5 mm / diameter: 11 mm
operating voltage: 10 – 30 V DC
pnp – positive switching, closing function
installation “non-flush”
If the customer decides to use a valve position
indicator other than APV type, we cannot take over
any liability for malfunctions.
PLC control unit
wiring diagram
programmable control
1
10
11
12
13
2
3
4
5
6
7
8
9
solenoid valve 1 main solenoid valve
solenoid valve for lower seat lift
solenoid valve for upper seat lift
solenoid valve 2
solenoid valve 3
gnd
+24V DC
gnd
+24V DC
gnd (power)
signal for
sensor 1
signal for
sensor 2
+24V DC
Hall sensor
1
Hall sensor
2
PLC external proximity switches
signal external
proximity
switch 3
signal external
proximity
switch 4
external
proximity
switch 3
external
proximity
switch 4
brown
black
black
blue

7
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
5. Cleaning
For cleaning of the DELTA DA3+ valve, one has to distinguish
between three areas:
5.1 The flow areas
The upper and lower passages are cleaned by the passing
cleaning liquid during cleaning of the connected pipelines.
5.2 The seal surfaces
The seal surfaces of the upper area (upper shaft and seat seal)
and the lower area (lower shaft and seat seal) are flushed and
cleaned by cleaning liquid during the lifting of the individual valve
shafts during cleaning of the respective passage.
5.3 The leakage chamber
The Cleaning of the leakage chamber is undertaken by CIP
spraying. CIP cleaning connection (C).
The valve shafts being lifted, the CIP liquid also cleans the
leakage chamber.
Spraying does not produce pressure build-up in the leakage
chamber and can be carried out in closed and in open valve
position.The conduct of the cleaning liquid provides for a
biologically perfect cleaning of the whole leakage chamber.
Under normal conditions
15 valves DN 40 - 100 / 1,5” - 4”
10 valves DN 125 - 150 can be cleaned via one spray
distribution line DN 25.
5.4 Cleaning recommendation:
- The lifting cycles refer to a cleaning pressure of p = 2 - 5 bar.
- Depending on the pressure ratio, cleaning temperatures, cleaning
steps and degree of soiling, different cycles must be adjusted.
- Flushing quantities per CIP spraying cycle:
DN 40 -100 / 1,5” - 4” ca. 1,2ltr/10s
DN 125, 150 ca. 5ltr/10s
- Cleaning pressure at CIP cleaning connection: min. 2 bar.
max. 5 bar.
cleaning step
pre-flushing
caustic flushing 80 oC
intermediate flushing
acid flushing
subsequent flushing
CIP spraying
3 x 10 sec.
3 x 10 sec.
2 x 10 sec.
3 x 10 sec.
2 x 10 sec.
lifting cycle
3 x 5 sec.
2 x 5 sec.
3 x 5 sec.
2 x 5 sec.
C
fig. 5.3
CIP - spraying
free drain
CIP liquid

8
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
fig. 5.6
fig. 5.7
5. Cleaning
5.6 Cleaning of upper area (fig. 5.6)
The upper valve shaft is lifted via the connection
(A2)
By lifting of the upper valve shaft, the cleaning liquid flushes over the
upper seat seal and the upper valve seat into the leakage chamber
and cleans this area.The cleaning liquid is drained off to the bottom
in depressurized state.
Simultaneously, the upper shaft seal and the outer surface of the
upper valve shaft are cleaned.Then the cleaning liquid is drained off
at the inner tube of the lower valve shaft to the bottom.
The lifting stroke is limited by a metallic stop.
5.7 Cleaning of the lower area (fig. 5.7)
The lower valve shaft is lifted via the connection
(A1)
By lifting of the lower valve shaft, the cleaning liquid flushes over the
lower seat seal into the leakage chamber and cleans this area.The
cleaning liquid is drained off to the bottom in depressurized state.
Simultaneously, the lower shaft seal and the outer surfaces of
the lower valve shaft are cleaned.The cleaning liquid flushes the
spray connection and is then drained off to the bottom in
depressurized state.
The lifting stroke is limited by a metallic stop.
pressure in bar
5.5 Flushing quantity in ml per lifting cycle / 5 sec.
DN 40, 50, 65
Inch 1,5”, 2”,
2,5”, 3”
DN 80, 100
Inch 4”
DN 125, 150
0,1 1 2 3 4 5
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0

9
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
6. Installation
- The valve must be installed in vertical position. Fluids are, therefore,
freely drainable from the valve housing and the leakage chamber.
- Valve housings can be welded direct into the pipelines (completely
dismantable valve insert).
-Attention: Observe welding instructions.
- Heights of installation and dismantling (see section 7).
6.1 Welding Instructions
DA3+
- Before welding of the valve, the valve insert must be dismantled
from the housing. Careful handling to avoid damage to the parts is
necessary (see 11.1).
It is not necessary to remove the lower shaft seal as it can be
destroyed during dismantling.
- Welding should only be carried out by certified welders (EN 287-1).
(Seam quality EN 25817 "B").
- The welding of the valve housings must be undertaken in such a
way that the valve body is not deformed.
- The preparation of the weld seam up to 3 mm thickness must be
carried out as a square butt joint without air. (Consider shrinkage!)
- TIG orbital welding is best!
- After welding of the valve housing or of the mating flanges and after
work at the pipelines, the corresponding parts of the installation and
pipelines must be cleaned from welding residues and soiling before
operation of the valves to avoid damage to the valves and seals.
If these cleaning instructions are not observed, welding residues
and dirt particles can settle in the valve and cause damage.
- Any damage resulting from the non-observance of these welding
instructions is not subject to our guarantee.

10
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
G
L
Y X
AH
B
Di
FF
installation
dimensions
min. in mm
weight
in
DN A B Ø Di F Ø G H L X Y Kg
40 502 120 38 100 163 63 685 784 200 14,2
50 508 126 50 100 163 75 709 804 218 14,3
65 516 134 66 100 163 91 741 824 242 14,5
80 543 146 81 120 188 106 795 914 274 19,7
100 553 156 100 120 188 125 834 944 303 20,8
125 631 176 125 150 236 150 957 1074 342 47,1
150 643 189 150 150 236 175 982 1134 392 48,0
inch
1,5” 503 119 35,1 100 163 63 685 784 197 14,2
2” 509 125 47,8 100 163 75 709 804 216 14,3
2,5” 513 131 60,0 100 163 85 729 824 233 14,5
3” 519 137 72,1 100 163 97 753 854 251 14,9
4” 554 155 97,6 120 188 125 834 944 301 20,8
7. Dimensions / Weights

11
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
8. Technical Data
product-wetted parts : 1.4571, 1.4404
other parts : 1.4301
seals :
standard design: EPDM/ PTFE
options: HNBR/ PTFE
FPM/ PTFE
VMQ/ PTFE
actuator : PA 12 GF 30
spray connection : PP
max. line pressure : 10 bar
max. operating temperature : 135°C EPDM, HNBR
*VMQ, *FPM
short-term load : 140°C EPDM, HNBR
*VMQ, *FPM
* (no steam)
tightening torque for
stop sleeve (11) : 15Nm
tightening torque for safety nuts
(42, 16) at upper and lower valve shaft : 40Nm
cleaning connection (for hose)
DN 40 - 100 / inch 1,5” - 4” : 8x1mm
DN 125 - 150 : 10x1mm
air connection (for hose) : 6x1mm
max. pneumatic air pressure : 10 bar
min. pneumatic air pressure : 6 bar
(Use dry and clean pneumatic air, only.)
8.1 air consumption
actuator in
NL / stroke
air consumption
seat lift cylinder in
NL / stroke
closing times
in sec.
DN / inch valve
open upper seat lift lower seat lift hose length 1m 10m
40 / 1,5” 0,9 1,1 0,3 1,5 2,5
50 / 2” 1,1 1,3 0,3 1,5 2,5
65 / 2,5” 1,3 1,5 0,3 1,5 2,5
3” 1,3 1,5 0,3 3,0 4,0
80, 100 / 4” 2,3 2,6 0,45 3,0 4,0
125, 150 6,4 7,0 1,1 8,0 8,0

DN
40 57 46 23 25
50 120 95 42 45
65 219 148 69 78
80 296 200 120 130
100 505 320 164 170
125 800* 500* 300 330
150 1200* 700* 360 380
inch
1,5” 47 40 21 24
2” 100 73 43 46
2,5” 170 122 59 66
3” 213 160 71 80
4” 490 294 150 160
12
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
8. Technical Data
1200*
800* 500*
700*
* no measuring value
8.2 kvs - values in m3/ h
8.3 valve stroke
H2
B
A
C
H1
valve position
closed
valve position
open
upper
valve shaft
lower
valve shaft
table to fig. 8.3
dimensions in mm
DN
inch
stroke H2
lower shaft
BA
40
50
65
80
100
125
150
6
11
21
31
50
63
88
6
11
15
27
50
3
10
16
16
21
3
10
16
21
21
33
33
C
21,2
21,2
21,2
21,2
36,2
21,2
21,2
21,2
36,2
36,2
55,2
55,2
stroke H1
upper shaft
26
33
39
44
44
56
56
32
39
45
50
50
62
62
26
33
39
39
44
32
39
45
45
50
1,5”
2”
2,5”
3”
4”

13
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
9. Maintenace
- The maintenance intervals are different depending on the
application and must be determined by the operator himself
carrying out temporary checks.
- For the dismantling of the valve, compressed air is not required.
- Required tools:
- 1 x hexagen socket wrench 3
- 1 x wrench SW13
- 2 x wrench SW17
- 2 x wrench SW24
- disassembly and assembly tool for the lower shaft seal,
ref.-No. 000 51-13-100/17
- Replacement of seals according to Service Instructions.
The customer is recommended to hold spare seals on stock.
For valve maintenance APV supplies complete seal kits including
seal grease (pl. see spare parts lists).
- The valve must not be cleaned with products containing abrasive
or polishing substances. Especially the valve shafts must not be
cleaned with such agents under any circumstances. Damage at
the valve shaft can produce leakages.
- Assembly of the valve according to service instructions.
- To simplify the installation of the middle seal, assembly tools are
available (see item 12.).
- Provide all seals with a thin layer of grease before
their installation (see lubrication chart )
Recommendation:
APV food grade grease for EPDM, HNBR and FPM (Viton)
(0,75 kg/ tin - ref.-No. 000 70-01-019/93)
(60 g/ tube - ref.-No. 000 70-01-018/93)
APV food grade grease for VMQ (Silikon)
(0,60kg/ tin - ref.-No. 000 70-01-017/93)
(60 g/ tube - ref.-No. 000 70-01-016/93)
! No matter what type of application, use only those greases
being suited for the respective seal material.
Recommendation for actuator:
APV pneumatic grease:
(25 ml-tube - ref.-No. 000 70-01-008/93 )

The item numbers refer to the spare parts drawings
DIN design : RN 01.053.76
Inch design : RN 01.053.76-1
10.1 Dismantling from the line system
a. Shut off the line pressure in the product and cleaning lines,
discharge the pipes if possible.
b. Release the compressed air line from the CU adapter.
c. Release the nut of the proximity switch (15, 14) and pull out the
proximity switches.
d. Remove the control unit.
(Turn safety ring in anticlockwise direction, see symbols on the
control unit.)
= open = closed
e. Remove the flange screws (7) at the spring cylinder (8).
f. Screw in one flange screw into the threaded bore of the spring
cylinder to lift the complete valve insert. Do not remove the screw
which will help to re-install the valve insert.
g. Carefully lift the valve insert vertically out of the valve housing.
14
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
!
control unit
actuator screw
CU adapter
15 14
7
8
10. Service Instructions

15
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
10. Service Instructions
10.2 Dismantling of the product-wetted seals ( service )
a. Unscrew the actuator screw from the guide rod.
b. Remove the adapter for the control unit.
c. Remove the lower and upper housing seal (35) from the
valve seat (6).
d. Release the lower safety nut (45). Holding the lower shaft (3) with
a wrench SW17 prevents it from turning.
e. After removal of the nut, detach the lower shaft from the
guide rod (4).
Dismantling of middle seal (41)
f. Pierce the middle seal with a peaked object and pull it out of the
groove.Take the o-ring (42) out of the groove.
g. Unscrew the stop screw (11).
h. Lift the guide rod (4) out to the top and remove the o-ring (34).
i. Remove the safety nut (20). By holding the safety disc (21) with a
wrench SW24 it is prevented from turning. Remove the safety disc.
j. Lift off the spring cylinder (8) with main cylinder (9) and seat lift
cylinder (10). (Service of main and seat lift cylinder, see 10.3).
k. Press the upper valve shaft (5) with seat ring (40) to the bottom
out of the valve seat (6).
l. Slide the seat ring (40) over the compensating piston of the upper
valve shaft.
m.Remove the seat seals (39) from the groove (see detail X).
n. Dismantling of upper shaft seal (37, 36)
Take a peaked object to pierce the seat seal (36) and pull it
out of the valve seat.Afterwards, remove the PTFE seal (37).
o. Dismantling of lower shaft seal (37, 36) from the housing
Take the metal point of the disassembly tool to stick into the seat
seal (36) from the top and pull it off to the top.
Afterwards, remove the PTFE seal (37) to the top through the
housing by means of the mandril of the assembly tool.
p. Remove the seal ring (33) and guide band (32) from the groove of
the valve seat (6).
11
20
21
8
10
4
32
33
34
35
35
6
X5
3
6
X
5
detail X
35
37, 36
45
39
41
39
40
42
9
37, 36
3