SPX APV DELTA DF plus 2 User manual

Operating Manual
D E L T A D F p l u s 2
Double Seat Valve
Read and understand this manual prior to
operating or servicing this product.

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1. General Terms 2
2. Safety nstructions 2
3. Mode of Operation 3 - 4
4. Auxiliary Equipment 5 - 6
5. Cleaning 7 - 8
6. nstallation 9
6.1 Welding nstructions 9
7. Dimensions / Weights 10
8. Technical Data 11 - 12
9. Materials 12
10. Maintenance 13
11. Service nstructions 14 - 18
12. Actuator 18
13. Assembly Tool 19
14. Detection of Seal Damage 20
(Trouble Shooting)
15. Spare Parts Lists
DFplus2 FS-A12 1,5”-4”, 6” RN 01.053.80-1
Actuator RN 01.053.22
Table of Contents : Page :
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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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 nstructions
DANGER!
- The line and cleaning system must be depressurized before any
maintenance work.
- Electric and pneumatic connections must be separated.
- Risk of injury by sudden valve actuation!
- Observe service instructions to ensure safe maintenance
of the valve.
- During valve actuation and during shaft lifting, operating leakages
spirt out to the bottom!
- Cleaning connections which are not used must be sealed
by a plug.
- The spring actuator is under spring load, do not open it!
1. General Terms
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004
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3. Mode of Operation
3
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 valve DFplus2 is suited for the food and beverage
industries as well as for pharmaceutical and chemical applications.
- The valve opens from the top to the bottom.
- Separation of two line sections by two valve disks with intermediate
flushable leakage chamber. Cleaning connection at (D)
with ½" clamp connection.
- Double sealing function by two independently acting seals.
- Any leakages at the valve seats are discharged at (F) in
depressurized state.
- Valve feedback switches can be installed at (E).
- Actuation by pneumatic actuator with air connection at (C).
Reset by spring force.
- The double seat valve is generally mounted in the actuator design
"fail-up" (air-to-lower, spring-to-raise). With air failure, the valve
moves into the safety limit position "closed".
- For seat cleaning purposes a seat lift actuator can be mounted on
the actuator.
- Seat lift actuator
connection A=lifting of lower valve seat
connection B= lifting of upper valve seat
UK
A
B
C
E
seat lift
actuator
actuator
coupling
E
housing
leakage
chamber
F
D
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

3. Mode of Operation
Valve in closed position
The upper and lower valve shaft are closed by spring force.
The different liquids Aand Bare safely separated from
one another.
The leakage chamber which is situated between the two valve
shafts, provides for a free and depressurized drain to the bottom.
Valve in open position
The upper valve shaft is pressed against the seal of the lower
valve shaft and out of its seat by control of the actuator. At the
same time, the leakage chamber is closed against the product
chamber. The two valve shafts move to the bottom into the
open position. Pipelines Aand Bare connected.
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upper
valve shaft
lower
valve shaft
leakage
chamber
A
B
A
B
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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Seat lift actuator
- If necessary for reasons of process technology or hygiene,
the DFplus2 valve can be equipped with a seat lift actuator.
The upper and lower valve seats can be lifted individually by the
seat lift actuator. Through the lifting of the individual valve seats
the seal surfaces and the leakage chamber are cleaned.
Valve feedback (standard)
- Switches to signal the limit position of the closed and open valve
position can be installed in the yoke area if requested.
We recommend our APV standard types.
Operating distance: 5 mm / diameter: 11 mm.
If the customer decides to use valve feedback switches other than
APV type, we cannot take over the liability for any malfunctions.
Valve feedback acc rding t PMO
- The limit position of the upper and lower valve shafts can be
interrogated individually.
- Switches to signal the limit position can be mounted in the yoke
area or at the housing cover if requested.
The following feedback kits are available:
1. Inquiry of upper and lower valve shaft closed.
Prox. switch kit DFplus2 24 VDC closed
ref-No.:000 - 08 - 60 - 415/93
2. Inquiry of upper and lower valve shaft closed as well as valve open.
Prox. switch kit DFplus2 24 VDC closed + open
ref-No.:000 - 08 - 60 - 416/93
4. Auxiliary Equipment
valve feedback
PMO
seat lift
actuator
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

+ proximity switch holder
2 x ref-No.: 15 - 33 - 914/83
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Control Unit
- The assembly of a CU3 Control Unit on the DFplus2 valve
is possible.
- For the assembly of a control unit on the actuator or seat lift
actuator corresponding adapters are required.
Different designs are available:
Standard C ntr l Unit + Adapter
(inquiry f valve p siti n pen and cl sed)
C ntr l Unit acc rding t PMO + Adapter
(inquiry f upper and l wer valve shaft cl sed)
4. Auxiliary Equipment
control unit
DELTA CU3
1 solenoid valve (EMV) 3 solenoid valves (EMV)
(without seat lifting) (with seat lifting)
Direct Connect 24V CU31 Direct Connect CU33 Direct Connect
ref-No.: 16 - 31 - 260/93 16 - 31 - 263/93
Device Net CU31 Device Net CU33 Device Net
ref-No.: 16 - 31 - 264/93 16 - 31 - 267/93
AS - nterface CU31 AS - nterface CU33 AS - nterface
ref-No.: 16 - 31 - 268/93 16 - 31 - 271/93
adapter CU Adapter D2 CU33 Adapter DFplus2
ref-No.: 08 - 48 - 429/93 16 - 00 - 205/93
1 solenoid valve (EMV) 3 solenoid valves (EMV)
(without seat lifting) (with seat lifting)
Direct Connect 24V CU31 Direct Connect CU33 Direct Connect
ref-No.: 16 - 31 - 786/93 16 - 31 - 804/93
Device Net CU31 Device Net CU33 Device Net
ref-No.: 16 - 31 - 785/93 16 - 31 - 805/93
AS - nterface CU31 AS - nterface CU33 AS - nterface
ref-No.: 16 - 31 - 787/93 16 - 31 - 806/93
Adapter CU31 Adapter DFplus2 CU33 Adapter DFplus2
ref-No.: 16 - 00 - 204/93 16 - 00 - 205/93
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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5. Cleaning
With the cleaning of the DFplus2 valves it is necessary to
distinguish between three areas:
The flow area
The upper and lower passages are cleaned by the flowing
cleaning liquid during the cleaning of the connected pipelines.
The seal surfaces in the seat area
The seat seals (7) and (5) are cleaned through valve actuation
and lifting of the individual valve seats during the cleaning of the
resepective passage. The seal surfaces are flushed and cleaned
by the cleaning liquid.
The leakage chamber
The cleaning of the leakage chamber is effected by CIP spraying.
Cleaning connection (D).
Spraying does not produce pressure built-up in the leakage
chamber and should preferably be undertaken in closed valve
position. The flow of the cleaning liquid provides for perfect
hygienic cleaning of the leakage chamber.
Under standard conditions 15 valves 1,5" to 4" can be cleaned via
one 1" spray distribution line.
10 valves can be cleaned via one 1” spray distribution line.
flow chambers
sealing
surface
CIP
D
leakage
chamber
ring nozzle
Cleaning step seat lifting C P spraying
Pre-flushing 3 x 10 sec.
Caustic flushing 80oC 3 x 5 sec. 3 x 10 sec.
ntermediate flushing 2 x 5 sec. 2 x 10 sec.
Acid flushing 3 x 5 sec. 3 x 10 sec.
Final flushing 2 x 5 sec. 2 x 10 sec.
Cleaning recommendation:
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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Seat lifting in the upper area
The upper valve shaft is lifted via the connection (B) at the
seat lift actuator.
By lifting of the upper valve shaft, cleaning liquid flows over the
upper seat seal into the leakage chamber and cleans this area.
The cleaning liquid is drained at the inner pipe of the lower valve
shaft to the bottom.
Seat lifting in the lower area
The lower valve shaft is lifted via the connection (A) at the
seat lift actuator.
By lifting of the lower valve shaft, cleaning liquid flows over the
lower seat seal into the leakage chamber and cleans this area.
The cleaning liquid is drained at the inner pipe of the lower valve
shaft to the bottom.
5. Cleaning
upper
valve shaft lifted
lower
valve shaft
closed
lower
valve shaft
lifted
leakage
chamber
- Cleaning liquid quantity per C P spraying cycle:
1,5” - 6” about 5 - 10l/min
- Cleaning pressure at C P cleaning connection:
min. 3 bar / max. 5 bar
*The seat lift cycles refer to a cleaning pressure of
p = 3 - 5 bar.
*The cleaning liquid quantity must be determined by the operator
who adjusts the opening stroke.
- Assembly and adjustment of the seat lift actuator
see operating manual: seat lift actuator
double-seat valves D2 / DFplus2
*Depending on the pressure ratio, cleaning temperatures,
cleaning steps and degree of soiling, cleaning parameters must
be changed to suit.
*with optimum use of the seat lift actuator.
upper
valve shaft
closed
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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- The valve must be installed in vertical position.
Fluids are, therefore, freely drainable from the valve housing and
from the leakage chamber.
- Valves can be welded direct into the pipelines
(completely dismantable valve insert).
- Heights of installation and dismantling (see section 7).
Attention: Observe welding instructions.
6.1 Welding nstructions
- Before welding of the valve, dismantle the valve insert from the
housing. Remove the housing cover (1) with seals.
A careful handling to avoid damage to the parts is necessary.
- Welding should only be carried out by certified welders (EN 287-1)
(seam quality EN 25817 "B").
- The welding of the valve housing 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 should
be carried out as a sqare butt joint without air.
(Consider shrinkage!)
- TIG orbital welding is best!
- After welding of the housing or of the mating flanges and after
work at the pipelines, the corresponding parts of the installation
or pipelines must be cleaned from welding residues and soiling.
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.
6. nstallation
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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7. Dimensions / Weights
inch A A1 B Di F H L L1 stroke stroke
upper lower
shaft shaft
1,5” 474 375 81 34,9 67 51,9 607 508 28 24
2” 481 382 87 47,6 72 64,6 633 534 28 24
2,5” 487 388 96 60,3 85 77,3 660 561 28 24
3” 493 394 100 72,9 100 88,9 683 584 28 24
4” 506 407 118 97,6 120 114,6 739 640 28 24
6” 608 794 136 146,9 150 170 914 803 42 38
B
X Y
Di
Hub H A
L
FF
installing dimensions in mm
X Y Y1
1,5” 260 660 560
2” 270 690 590
2,5” 300 720 620
3” 310 760 660
4” 350 830 730
6” 450 1040 930
dimensions in mm
weights in kg
inch without with
seat lift actuator seat lift actuator
1,5” 8,4 11,1
2” 9,7 12,4
2,5” 14,5 17,2
3” 16,5 19,2
4” 24,7 28,2
6” 51,0 57,0
Y1
A1
L1
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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8. Technical Data
kvs - values for DELTA DFplus 2 valves in m3/h
1,5” 37 51 22 26
2” 64 84 44 50
2,5” 111 185 77 75
3” 154 240 106 105
4” 340 440 177 168
6” 800 1050 440 456
Max. line pressure : 5 bar
Max. operating temperature : 135°C EPDM, HNBR
*FPM, *VMQ
Short-term load : 140°C EPDM, HNBR
*FPM, *VMQ
* no steam
tightening torque of
safety nut at upper
valve shaft : 40Nm
C P - connection : 1/2” clamp connection
-throughput during cleaning :3bar / 5 - 10 l/min
Air connection (for hose) : 1/4” OD
Max. pneumatic air pressure : 10 bar
Min. pneumatic air pressure : 6 bar
(Use dry and clean air only)
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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9. Materials
Housing, valve seat, shafts 1.4571, 1.4404
Actuator, yoke, guide rod,
screws, operating cam 1.4301
Seals: standard: EPDM/ PTFE
optional: HNBR, FPM, VMQ
Air connections: PA 6.6
8. Technische Daten
Quantity of operating leakages of DFplus2 valves
3 bar line pressure in upper valve housing
fluid: water t = 20oC, figures in litre
inch valve open valve closed
1,5” 0,15l 0,35l
2” 0,2l 0,4l
2,5” 0,22l 0,55l
3” 0,24l 0,66l
4” 0,4l 1,3l
6” 0,9l 1,5l
Standard design: actuator and seat lift actuator
inch actuator air consumption seat lift actuator air consumption
actuator seat lift actuator
in NL / stroke in NL / stroke
1,5” D 100 - 22 2,3 100 0,8
2” D 100 - 22 2,3 100 0,8
2,5” D 125 - 22 3,5 100 0,8
3” D 150 - 22 5,0 100 0,8
4” D 180 - 22 7,0 125 1,2
6” D 255 - 22 20,0 180 2,2
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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10. Maintenance
- The maintenance intervals are different depending on the
application and should be determined by the operator carrying
out temporary checks.
- Replacement of seals, see service instructions.
Use seal kits according to spare parts list.
- For the installation of the upper and lower seat seal
assembly tools are respectively available (see 13).
- Assembly aid:
Centering arbor: To install the valve insert in the
valve housing, use the centering arbor
in 4" dimension (ref-No.: 51 - 13 - 725/93)
in 6" dimension (ref-No.: 51 - 13 - 726/93).
Assembly arbor: The valve seat is positioned during
assembly with the valve yoke by the
assembly arbor.
(The assembly arbor canbe manufactured
by the customer, see illustration).
- Required tools:
*plastic tip hammer
*scribing iron (for seal removal)
*1 x wrench SW10
*1 x wrench SW13
*2 x wrench SW17
- Assembly of the valve, see service instructions.
- All seals must be provided with a thin layer of grease.
Recommendation:
APV food-grade grease for EPDM, HNBR and FPM
(0,75 kg /tin - ref.-No. 000 70-01-019/93)
(60 g /tube - ref.-No. 000 70-01-018/93)
or
APV food-grade grease for VMQ (Silicone)
(0,6 kg /tin - ref.-No. 000 70-01-017/93)
(60 g /tube - ref.-No. 000 70-01-016/93)
Use only those greases being suited for the respective
seal material.
!Do not use grease on mineral oil basis for EPDM seals.
!Do not use Silicone-based grease for Silicone seals.
28
20h9
80 polished
20 R2
150
2o
assembly arbor
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
centering arbor
DFplu2
DELTA DFplus2 - U 1 / qxd.12.2004

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11. Service nstructions
The item numbers refer to the spare parts drawings
inch: RN 01.053.80-1.
11.1 Dismantling from the line system
a. Disconnect pneumatic and electric connections.
b. Shut off line pressure in the product and cleaning lines.
c. Dismantle the cleaning line.
d. Release the clamp screw of the feedback support and unplug
the switch. (If a feedback is not installed, omit 11.1.d).
-Detach the control unit from the actuator / seat lift actuator.
(Turn the ring in anticlockwise direction.)
e. Remove the flange screws (22).
f. Screw one flange screw into the threaded bore of the valve yoke,
thus lifting the complete valve insert.
g. Carefully lift the valve insert out of the valve housing.
! Attention: Do not damage the valve seat
or the lower valve shaft.
-Finally remove the flange screw.
22
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004

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11. Service nstructions
11.2 Dismantling of seals (service)
The item numbers refer to the spare parts drawings
inch: RN 01.053.80-1.
11.2.1 Dismantling f h using c ver (1)
a. Remove the housing cover (1) from the housing.
b. Remove the housing seal (3), guide band (29), shaft seal (28)
and seat seal (27).
11.2.2 Dismantling f valve insert
a. Control the valve with a compressed air pressure of min. 4 bar.
Drive the valve into open position.
Attention: Risk of injury by sudden valve actuation.
Do not touch movable parts.
b. Screw off the safety nut (30). Hold up the lower valve shaft (4)
with a wrench SW17 to prevent it from turning.
c. Pull off the lower valve shaft (4).
Prick a pointed tool into the lower seat seal (5) and pull it
out of the groove.
d. Release the clamp screw of the coupling (14) and remove the
complete coupling.
e. Cut off pneumatic air pressure.
f. Pull off the upper valve shaft (6).
Prick a pointed tool into the upper seat seal (7) and pull it out
of the groove.
g. Attention: f the valve is equipped with a seat lift actuator,
the actuator must be dismantled, at first.
- Release the hex. screws and remove them.
Valve without seat lift actuator:
- Remove the yellow cap from the actuator rod.
h. Press the guide rod out to the top.
Use a rubber mallet to facilitate the work.
i. Remove the operating cam (13). Remove the o-ring (19).
j. Remove the hex. screw (12). Remove the valve seat (10).
Dismount the upper shaft seal (23), seat seal (24) and the
housing seals 3 x (3).
Remove the guide bushes (20, 21) from the yoke.
housing
1
3
29
27, 28
lower
valve shaft
4
5
30
seat lift actuator
actuator
14
12
24, 23
10
3
3
13
20, 21
16
7
6
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - U 1 / qxd.12.2004
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