Graco 256994 Manuale operativo

Instructions-Parts

Color and Catalyst

Change Valve Stacks 312783G

For color/catalyst changing or distribution of industrial paints and coatings or fluids.

See pages 3 and 4 for model information, including maximum working pressure.

Important Safety Instructions

Read all warnings and instructions in this manual.

For complete warnings and instructions see your

proportioning system manual. Hazard symbols refer

to specific procedure risks. Save all instructions.

TI11668b

Low Pressure Valve Stack 15V813

TI11665b

High Pressure Valve Stack 15V817

Related Manuals

2312783G

Contents

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Low Pressure Valve Stacks . . . . . . . . . . . . . . . . 3

High Pressure Valve Stacks . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Low Pressure Color/Catalyst Valve Stacks -

Series B . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Low Pressure Color/Catalyst Valve Stacks -

Series A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

High Pressure Color/Catalyst Valve Stacks -

Series B . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

High Pressure Color/Catalyst Valve Stacks -

Series A . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Low Pressure Valve Stack Dimensions -

Series B . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Low Pressure Valve Stack Dimensions -

Series A . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

High Pressure Valve Stack Dimensions -

Series B . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

High Pressure Valve Stack Dimensions -

Series A . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

California Proposition 65 . . . . . . . . . . . . . . . . . . . 15

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 16

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . 16

Related Manuals

See the following manuals for additional information on

the color and catalyst change valve stacks.

Manual in

English Description

312775 ProMix 2KS Manual System Installation

312776 ProMix 2KS Manual System Operation

312777 ProMix 2KS Manual System

Repair-Parts

312778 ProMix 2KS Automatic

System Installation

312779 ProMix 2KS Automatic

System Operation

312780 ProMix 2KS Automatic System

Repair-Parts

312782 Dispense Valve

312787 Color Change Module Kit

Models

312783G 3

Models

Low Pressure Valve Stacks

300 psi (2.1 MPa, 21 bar) Maximum Fluid Working Pressure

Each stack includes one additional valve for solvent.

Valve Stack

Part No. Series Valve Stack Description Valve Part No. Valve

Quantity

256994

1 color

15X304

15V812 2 color/catalyst change 3

256290 3 color/catalyst change 4

15V813 4 color/catalyst change 5

256292 5 color/catalyst change 6

256293 6 color/catalyst change 7

15V814 7 color/catalyst change 8

256295 8 color/catalyst change 9

256296 9 color/catalyst change 10

256297 10 color/catalyst change 11

256298 11 color/catalyst change 12

15V815 12 color/catalyst change 13

256300 13 color/catalyst change 14

256301 14 color/catalyst change 15

256302 15 color/catalyst change 16

256303 16 color/catalyst change 17

256304 17 color/catalyst change 18

256305 18 color/catalyst change 19

256306 19 color/catalyst change 20

256307 20 color/catalyst change 21

256308 21 color/catalyst change 22

256309 22 color/catalyst change 23

256310 23 color/catalyst change 24

256311 24 color/catalyst change 25

256312 25 color/catalyst change 26

256313 26 color/catalyst change 27

256314 27 color/catalyst change 28

256315 28 color/catalyst change 29

256316 29 color/catalyst change 30

256372 30 color/catalyst change 31

Models

4312783G

High Pressure Valve Stacks

3000 psi (21 MPa, 210 bar) Maximum Fluid Working Pressure

Each stack includes one additional valve for solvent.

Valve Stack

Part No. Series Valve Stack Description Valve Part No. Valve

Quantity

256995

1 color

15X303

15V816 2 color/catalyst change 3

256339 3 color/catalyst change 4

15V817 4 color/catalyst change 5

256341 5 color/catalyst change 6

256342 6 color/catalyst change 7

256343 7 color/catalyst change 8

256344 8 color/catalyst change 9

256345 9 color/catalyst change 10

256346 10 color/catalyst change 11

256347 11 color/catalyst change 12

256348 12 color/catalyst change 13

256349 13 color/catalyst change 14

256350 14 color/catalyst change 15

256351 15 color/catalyst change 16

256352 16 color/catalyst change 17

256353 17 color/catalyst change 18

256354 18 color/catalyst change 19

256355 19 color/catalyst change 20

256356 20 color/catalyst change 21

256357 21 color/catalyst change 22

256358 22 color/catalyst change 23

256359 23 color/catalyst change 24

256360 24 color/catalyst change 25

256361 25 color/catalyst change 26

256362 26 color/catalyst change 27

256363 27 color/catalyst change 28

256364 28 color/catalyst change 29

256365 29 color/catalyst change 30

256371 30 color/catalyst change 31

Installation

312783G 5

Installation

1. Connect 5/32 in. (4 mm) OD air actuation tubes

from the valve solenoids to the air inlets (A) of each

valve. See FIG. 1.

NOTE: The high pressure color change valve uses a

spring-operated valve closure vent (20) which does not

require a second air actuation line. If you are installing a

bare valve, remove the elbow fitting from the top port

and install the breather vent. Replace the spring with the

one marked with black stain. Both the breather and the

marked spring are shipped loose.

2. Connect fluid supply lines to the 1/4 npt(f)inlet (B) of

each valve adapter. Supply solvent to one valve (S)

at the top of the stack.

NOTE: Excessive inlet fitting torque may cause the fit-

ting to extend past its normal depth and contact the

valve needle, resulting in misalignment and leakage.

After installing the inlet fitting, verify that the needle trav-

els freely by charging the valve with air or removing the

cap and manually actuating the needle.

NOTE: Paint Circulating System

The color change valves have two fluid ports for

each individual valve. If you are circulating

paint, plumb the valves in one port and out the

other. Another option is to use a tee fitting to cir-

culate.

NOTE: Verify that all unused fluid ports on the color

change valve stack are plugged before operation. An

open port will leak fluid.

3. Connect the gun fluid supply line to the fluid outlet

port (C) of the color change manifold.

NOTE: A check valve is recommended at the inlet of all

valves to prevent backflow if avalve fails, and to prevent

color crossover if two dead head valves are open at the

same time.

NOTE: High pressure valves are factory-set at one turn

open from fully closed. This setting provides the

required spring force to prevent fluid back flow from the

outlet manifold to the valve at outlet manifold pressures

up to 3000 psi (21 MPa, 210 bar). If valves on the stack

are not being used, close the valve completely or plug

the valve inlet and circulation ports.

If a valve is adjusted more than 1-1/4 turn open, back

flow pressure will be reduced.

FIG. 1. Valve Stack Connections

TI11665b

TI11668b

High Pressure Valve Stack

Low Pressure Valve Stack

Parts

6312783G

Parts

Low Pressure Color/Catalyst Valve Stacks - Series B

See the Low Pressure Valve Part Quantity Chart -

Series B on page 7 to determine the quantity of each

part in your valve stack.

*Part included in Seal Kit 15W621 (purchase sepa-

rately). Kit includes additional parts; see Dispense

Valve manual 312782.

--- These parts are not available separately.

Technical Data, Low Pressure Stacks

TI11669b

612

10 12 8

Ref.

No. Part No. Description Qty

1 20A006 MANIFOLD, Bottom, Color Change 1

2 20A004 MANIFOLD, Middle, Color Change 

3 20A005 MANIFOLD, Top 

4 15X304 VALVE, Low Pressure; includes

item 15; see manual 312782 

5* 15Y627 O-RING; PTFE, Size 116 

6 25B513 SEAT, Valve, Low Pressure 

7 101970 PLUG, Pipe 

8 110004 O-RING; PTFE, Size 011 

9 121112 SCREW, cap, socket-head; 1/4-20

x 5/8 in. (16mm) 

10 20A007 PLUG, Color Change 

11 16P656 FITTING, Outlet 1

12 111457 O-RING; PTFE, Size 012 

14 104893 O-RING; PTFE, Size 010 1

15 15T871 END CAP, Color Change (Assem-

bly 256994 only; not shown) 1

Maximum Fluid Working

Pressure 300 psi (2.1 MPa, 21 bar)

Wetted Parts 303 sst, tungsten carbide,

ptfe, acetal

Color Change Valves: see

manual 312782

Weight see page 7

Parts

312783G 7

Low Pressure Valve Part Quantity Chart - Series B

Find your Valve Stack Part No. in the left column and the desired reference number in the top row to find the part

quantity used in your valve stack.

Valve

Stack

Part No.

Reference Numbers Weight

lb (kg)234567891012

256994 0 0 2 2 2 2 1 2 0 2 2.35 (1.07)

15V812 0 1 3 3 3 3 1 2 1 4 4.05 (1.84)

256290 0 1 4 4 4 4 1 2 0 4 4.70 (2.13)

15V813 1 1 5 5 5 5 2 4 1 6 6.40 (2.90)

256292 1 1 6 6 6 6 2 4 0 6 7.05 (3.20)

256293 2 1 7 7 7 7 3 6 1 8 8.75 (3.97)

15V814 2 1 8 8 8 8 3 6 0 8 9.40 (4.26)

256295 3 1 9 9 9 9 4 8 1 10 11.10 (5.03)

256296 3 1 10 10 10 10 4 8 0 10 11.75 (5.33)

256297 4 1 11 11 11 11 510 112 13.45 (6.10)

256298 4 1 12 12 12 12 5 10 0 12 14.10 (6.40)

15V815 5 1 13 13 13 13 6 12 1 14 15.80 (7.17)

256300 5 1 14 14 14 14 612 014 16.45 (7.46)

256301 6 1 15 15 15 15 714 116 18.15 (8.23)

256302 6 1 16 16 16 16 7 14 0 16 18.80 (8.53)

256303 7 1 17 17 17 17 8 16 1 18 20.50 (9.30)

256304 7 1 18 18 18 18 816 018 21.15 (9.59)

256305 8 1 19 19 19 19 918 120 22.85 (10.36)

256306 8 1 20 20 20 20 9 18 0 20 23.50 (10.66)

256307 9 1 21 21 21 12 10 20 1 22 25.20 (11.43)

256308 9 1 22 22 22 22 10 20 022 25.85 (11.73)

256309 10 123 23 23 23 11 22 124 27.55 (12.50)

256310 10 1 24 24 24 24 11 22 0 24 28.20 (12.80)

256311 11 1 25 25 25 25 12 24 1 24 29.90 (13.56)

256312 11 126 26 26 26 12 24 026 30.55 (13.86)

256313 12 127 27 27 27 13 26 128 32.25 (14.63)

256314 12 1 28 28 28 28 13 26 0 28 32.90 (14.92)

256315 13 1 29 29 29 29 14 28 1 30 34.60 (15.70)

256316 13 130 30 30 30 14 28 030 35.25 (15.99)

256372 14 131 31 31 31 15 30 132 36.95 (16.76)

Parts

8312783G

Low Pressure Color/Catalyst Valve Stacks - Series A

*Part included in Seal Kit 15W621 (purchase sepa-

rately). Kit includes additional parts; see Dispense

Valve manual 312782.

--- These parts are not available separately.

Technical Data, Low Pressure Stacks

TI11669A

*15

Ref. No. Part No. Description 20A727

20A728



1 15X304 VALVE, low pressure; includes item 15; see manual 312782 2 1

2 15T875 SCREW; 5/16-24 x 5/8 in. (16 mm) 4 4

3 15T436 ADAPTER, manifold 2 1

4 101970 PLUG, pipe 2 1

6 15T793 MANIFOLD, fluid port --- ---

7 15T574 SEAT, valve needle 2 1

8 110004 O-RING; ptfe 2 2

9 15T792 MANIFOLD, body 1 1

10 15T794 MANIFOLD, end cap --- ---

1115X129 PLUG, housing --- 1

12109450 O-RING; ptfe --- 1

15* 15Y627 O-RING; ptfe 2 1

16 121112 SCREW, cap, socket-head; 1/4-20 x 5/8 in. (16 mm) 2 2

Maximum Fluid Working

Pressure 300 psi (2.1 MPa, 21 bar)

Wetted Parts 303 sst, tungsten carbide,

ptfe, acetal

Color Change Valves: see

manual 312782

Weight See page 7

Parts

312783G 9

High Pressure Color/Catalyst Valve Stacks - Series B

See the High Pressure Valve Part Quantity Chart -

Series B on page 10 to determine the quantity of

each part in your valve stack.

*Part included in Seal Kit 15U933 (purchase sepa-

rately). Kit includes additional parts; see Dispense

Valve manual 312782.

--- These parts are not available separately.

Technical Data, High Pressure Stacks

ti11666d

612

10 12 8

Ref.

No. Part No. Description Qty

1 20A006 MANIFOLD, Bottom, Color

Change 1

2 20A004 MANIFOLD, Middle, Color

Change 

3 20A005 MANIFOLD, Top 

4 15X303 VALVE, High Pressure; includes

item 15; see manual 312782 

5* 15Y627 O-RING; PTFE, Size 116 

6 15T725 SEAT, Valve, High Pressure 

7 101970 PLUG, Pipe 

8 110004 O-RING; PTFE, Size 011 

9 121112 SCREW,cap,socket-head;1/4-20

x 5/8 in. (16mm) 

10 20A007 PLUG, Color Change 

11 16P656 FITTING, Outlet 1

12 111457 O-RING; PTFE, Size 012 

14 104893 O-RING; PTFE, Size 010 1

15 15T871 END CAP, Color Change (Assem-

bly 256995 only; not shown) 1

Maximum Fluid Working

Pressure 3000 psi (21 MPa, 210 bar)

Wetted Parts 303 sst, tungsten carbide,

ptfe

Color Change Valves: see

manual 312782

Weight See page 10

Parts

10 312783G

High Pressure Valve Part Quantity Chart - Series B

Find your Valve Stack Part No. in the left column and the desired reference number in the top row to find the part

quantity used in your valve stack.

Valve

Stack

Part No.

Reference Numbers Weight

lb (kg)234567891012

256995 0022221202 2.60 (1.18)

15V816 0133331214 5.05 (2.29)

256339 0 1 44441204 5.20(2.36)

15V8171155552416 7.65(3.47)

256341 1166662406 7.80 (3.54)

256342 217777361810.25 (4.65)

256343 2 1 8888360810.40(4.72)

256344 3 1 99994811012.85(5.83)

256345 3 1 10 10 10 10 4 8 0 10 13.00 (5.90)

256346 4 1 11 11 11 11 510 112 15.45 (7.01)

256347 4 1 12 12 12 12 5 10 0 12 15.60 (7.08)

256348 5 1 13 13 13 13 6 12 1 14 18.05 (8.19)

256349 5 1 14 14 14 14 612 014 18.20 (8.26)

256350 6 1 15 15 15 15 714 116 20.65 (9.37)

256351 6 1 16 16 16 16 7 14 0 16 20.80 (9.43)

256352 7 1 17 17 17 17 8 16 1 18 23.25 (10.55)

256353 7 1 18 18 18 18 816 018 23.40 (10.61)

256354 8 1 19 19 19 19 918 120 25.85 (11.73)

256355 8 1 20 20 20 20 9 18 0 20 26.00 (11.79)

256356 9 1 21 21 21 12 10 20 1 22 28.45 (12.90)

256357 9 1 22 22 22 22 10 20 022 28.60 (12.97)

256358 10 123 23 23 23 11 22 124 31.05 (14.08)

256359 10 1 24 24 24 24 11 22 0 24 31.20 (14.15)

256360 11 1 25 25 25 25 12 24 1 24 33.65 (15.26)

256361 11 126 26 26 26 12 24 026 33.80 (15.33)

256362 12 127 27 27 27 13 26 128 36.25 (16.44)

256363 12 1 28 28 28 28 13 26 0 28 36.40 (16.51)

256364 13 1 29 29 29 29 14 28 1 30 38.85 (17.62)

256365 13 130 30 30 30 14 28 030 39.00 (17.69)

256371 14 131 31 31 31 15 30 132 41.45 (18.80)

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