Graco Marine Radio 255278 User Manual

Instructions-Parts  
High Flow Severe  
Duty Shutoff Check  
Valve  
313343A  
For recirculation valves, shutoff check valves, or outlet shutoff check valves on XM  
plural-component sprayers.  
Part No. 255278  
Complete high flow severe duty shutoff check valve assembly  
7250 psi (50 MPa, 500 bar) Maximum Working Pressure  
160°F (71°C) Maximum Fluid Temperature  
Important Safety Instructions  
Read all warnings and instructions in this manual  
and manuals 312359 and 313289. Save these  
instructions.  
 
Warnings  
Warnings  
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-  
tion point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back  
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where  
applicable.  
WARNING  
FIRE AND EXPLOSION HAZARD  
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent  
fire and explosion:  
Use equipment only in well ventilated area.  
Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop  
cloths (potential static arc).  
Keep work area free of debris, including solvent, rags and gasoline.  
Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes  
are present.  
Ground all equipment in the work area. See Grounding instructions.  
Use only grounded hoses.  
Hold gun firmly to side of grounded pail when triggering into pail.  
If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment  
until you identify and correct the problem.  
Keep a working fire extinguisher in the work area.  
PRESSURIZED EQUIPMENT HAZARD  
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and  
cause serious injury.  
Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,  
checking, or servicing equipment.  
Tighten all fluid connections before operating the equipment.  
Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.  
TOXIC FLUID OR FUMES HAZARD  
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or  
swallowed.  
Read MSDS’s to know the specific hazards of the fluids you are using.  
Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.  
Always wear impervious gloves when spraying or cleaning equipment.  
PERSONAL PROTECTIVE EQUIPMENT  
You must wear appropriate protective equipment when operating, servicing, or when in the operating  
area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic  
fumes, burns, and hearing loss. This equipment includes but is not limited to:  
Protective eyewear  
Clothing and respirator as recommended by the fluid and solvent manufacturer  
Gloves  
Hearing protection  
313343A  
3
 
 
Overview  
Overview  
The high flow severe duty shutoff check valve is a valve  
that acts as a spring loaded one-way check valve when  
the valve is in the open position. When the handle is  
turned to the closed position, the ball is held against the  
seat closing flow in either direction. The valve can be  
manifold mounted with four screws and an o-ring face  
seal on the inlet, or it can be plumbed in place with 1/2  
in. npt (f) threads on the inlet and two outlets.  
NOTE:  
It is recommended that this valve be used in the fully  
open and fully closed positions. To control the flow rate  
on a circulation line, use adjustable restriction valve  
222200. See Accessories on page 8.  
Flow Direction  
Flow Direction  
FIG. 1: Cutaway View  
4
313343A  
 
 
Overview  
313343A  
5
 
Setup  
7. Clean and inspect parts for wear and damage.  
Replace damaged parts from repair kit 256239.  
Setup  
Reference parts illustration on page 7.  
Assemble  
Reference parts illustration on page 7.  
1. Mount the valve in place with two outlet ports  
pointed in the desired direction using o-ring (14) and  
four screws (11).  
1. Install o-ring (9) in groove of check valve housing  
(10).  
2. Plug the un-used outlet port with plug (15). Use  
thread tape or sealant on the npt threads.  
NOTICE  
3. Use handle (12) to close the valve stem (8) clock-  
wise. Position handle (12) to point in the direction  
you want to show as “closed”.  
Do not install seal (6) and spacer (7) at this time to  
prevent damage to seal.  
4. Secure handle (12) in place on stem (8) with crown  
nut (11).  
2. Start to thread stem (8) by hand into bottom of car-  
tridge (10). Place handle (12) on stem (8) and turn  
counter-clockwise to fully thread stem (8) through  
top of cartridge (10) to full open position.  
Repair  
3. Insert spacer (7). Use plastic tool (110) and hammer  
(not provided) to install seal (6) with lips facing away  
from spacer (7) on to stem (8) until it stops against  
spacer (7).  
4. Place cartridge (10) in vice with bottom facing  
upward. Place spring (5) and ball (4) on stem (8).  
Firmly press seal (2) over lip of cartridge until it  
snaps into place and holds all the parts in place.  
Disassemble  
Reference parts illustration on page 7.  
5. Apply blue thread lock, from repair kit 256239, on  
cartridge (10) external threads and insert cartridge  
assembly into check valve housing (1).  
1. Relieve upstream and downstream pressure. See  
operation manual 312359 for Pressure Relief Pro-  
cedure. Leave stem (8) in open position.  
6. Place housing (1) in vice and torque to 125 ft-lbs.  
2. Clamp housing (1) in a vice. Remove nut (13) and  
handle (12) from top check valve housing (10).  
7. Mount valve and position handle as described in  
Setup.  
3. Remove cartridge assembly (10) from housing (1).  
4. Remove ball (4), and spring (5).  
5. Use plastic tool (110) provided in repair kit 256239  
to remove seat (3) and seal (2).  
NOTE:  
If valve housing (10) is still mounted on a machine, use  
a 90° hex key to grab under seat (3) and remove from  
housing (1).  
6. Place handle (12) upside down on stem (8). Turn  
clockwise and remove stem (8) from cartridge (10).  
The seal (6) and spacer (7) will come out with the  
stem. Remove seal (6) and spacer (7) from stem  
(8).  
6
313343A  
 
   
Parts  
Parts  
255278, Complete Shutoff Check Valve Shown  
11  
2
4
3
14  
2
3
3
6
7
8
9
3
2
15  
1
3
4
5
11  
2
4
12  
13  
10  
1
2
3
4
1
Torque to 125 ft-lbs. (170 N•m)  
Apply blue threadlock.  
Apply lithium grease.  
Torque to 16-20 ft-lbs. (22-27 N•m)  
Ref. Part  
15J594 HOUSING, check valve  
2*15K692 SEAL, retainer, acetal  
Description  
Qty.  
1
1
1
1
1
1
1
1
1
1
1
4
3*  
4*  
5*  
15A968 SEAT, footvalve, carbide  
116166 BALL, carbide  
15M530 SPRING  
6*15M529 SEAL, u-cup; UHMWPE  
7*  
8*  
15M189 SPACER, backup, seal  
15K347 STEM  
9*121138 O-RING; PTFE  
10*  
11  
15K199 HOUSING, top, check valve  
121295 SCREW, cap, shcs; 5/16-18 x 2.5  
in.  
12  
13  
14  
15  
15R381 HANDLE, black  
117623 NUT, cap (3/8-16)  
121139 O-RING; PTFE  
100361 PLUG, pipe; 1/2 npt  
1
1
1
1
*
Included in shutoff check valve cartridge 255747.  
Included in shutoff check valve repair kit 256239  
(purchase separately). See page 8 for parts included  
in kit.  
313343A  
7
 
 
Troubleshooting  
Troubleshooting  
Problem  
Cause  
Cartridge (10) is not tightened com- Torque cartridge (10) to 125 ft-lbs.  
pletely into housing (1). (170 N•m).  
Solution  
Handle is hard to turn under pres-  
sure.  
Repair Kit  
Accessories  
256239, Shutoff Check Valve Repair Kit  
Handles  
See parts illustration on page 7.  
Part  
Description  
Qty.  
247789 HANDLE, blue  
15R380 HANDLE, green  
247788 HANDLE, red  
1
1
1
Ref Part  
Description  
Qty.  
2
6
9
15K692 SEAL, retainer, carbide  
15M529 SEAL  
121138 O-RING  
1
1
1
1
1
15R529, Fluid Inlet Block  
110† 15T630 TOOL, u-cup and manifold  
111† 113500 ADHESIVE, anaerobic  
Used on XM outlet to mount high flow severe duty  
shut-off check valve when mix manifold is remote. See  
manual 312749 for parts.  
Not shown.  
256980, XM Remote Mix Manifold  
Conversion Kit  
See manual 312749.  
222200, Restriction Valve  
Used to control flow rate in circulation lines. See manual  
307892.  
8
313343A  
 
     
Technical Data  
Technical Data  
Maximum Fluid Working Pressure . . . . . . . . . . . . . . . . . . 7250 psi (50 MPa, 500 bar)  
Maximum Fluid Temperature . . . . . . . . . . . . . . . . . . . . . . 160°F (71°C)  
Check Valve Housing Fluid Ports . . . . . . . . . . . . . . . . . . . 1/2 in. npt  
Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . carbide ball, carbide seat, sst stem, nickel plated steel,  
PTFE o-rings, UHMWPE u-cup, acetal end cup seal.  
Full turns from closed to open position. . . . . . . . . . . . . . . 1.5 turns  
®
Loctite is a registered trademark of the Loctite Corporation.  
Mounting Dimensions  
1.44 in. (36.6 mm)  
1.44 in. (36.6 mm)  
2.1 in. (53.9 mm)  
0.72 in. (18.3 mm)  
0.72 in. (18.3 mm)  
2.44 in.  
(61.96 mm)  
2.1 in. (53.9 mm)  
NOTE:  
For manifold mounting this valve, the o-ring  
face groove must be duplicated on the mating  
1.055 in.  
surface.  
.053 in. (1.346 mm)  
(25.5 mm.)  
313343A  
9
 
   
Graco Standard Warranty  
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in  
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty  
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by  
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written  
recommendations.  
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty  
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of  
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with  
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or  
maintenance of structures, accessories, equipment or materials not supplied by Graco.  
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of  
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned  
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will  
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.  
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED  
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.  
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy  
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or  
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.  
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT  
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to  
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these  
warranties.  
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or  
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the  
negligence of Graco, or otherwise.  
FOR GRACO CANADA CUSTOMERS  
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,  
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la  
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite  
de ou en rapport, directement ou indirectement, avec les procédures concernées.  
Graco Information  
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.  
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505  
All written and visual data contained in this document reflects the latest product information available at the time of publication.  
Graco reserves the right to make changes at any time without notice.  
This manual contains English. MM 313343  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441  
Copyright 2009, Graco Inc. is registered to ISO 9001  
 
   

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