Graco EnDure User manual

309376L
EN
Instructions–Parts List
EnDure™Automatic
Dispense Valves
Air-operated dispense valves used for sealant and adhesive materials.
3500 psi (24.10 MPa, 241 bar) Maximum Dynamic Discharge Fluid Working Outlet Pressure
5000 psi (34.5 MPa, 345 bar) Maximum Static Working Pressure
120 psi (.83 MPa, 8.3 bar) Maximum Air Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
TI1377A
06540A

2309376L
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 36

309376L 3
Models
Basic
Valve
Part No.
Complete
Valve
Part No.
Description
(Replaces ...)
Maximum
Fluid
Temperature
Rating C (F)
Heater Voltage
Pin Connector Wattage
Valve Outlet
Connection
Parts
Page
244535 244910 Valve, ambient or water
conditioned. Replaces
C27340 hard seat and
918512 soft seat snuff-back,
if application is under 95 C
(200 F).
95 C (200 F) Nonpowered
ambient or water
circulation for
temperature
conditioning
05/8–18 male
thread.
Retainer nut
with 1/8 npt(f)
29
244961 Valve, 120 Volt E-Heat
Replaces valve 194485.
Any heated PrecisionFlo
before XL (July 2001) if
application is under 95 C
(200 F).
95 C (200 F) 120 VAC
6 Pin round
150 5/8-18 male
thread.
Retainer nut
with 1/8 npt(f)
27
244962 Valve, 230 Volt E-Heat
Replaces 243694 hard seat
and 243696 soft seat snuff-
back valves. Any Therm-O-
Flow Plus (after July 2000)
if application is under 95 C
(200 F).
95 C (200 F) 230 VAC
8 Pin square
200 5/8-18 male
thread.
Retainer nut
with 1/8 npt(f)
23
244907 244908 Valve, 120 Volt E-Heat
Replaces C34068 hard
seat, 918483 soft seat
snuff-back, any
Therm-O-Flow before
Therm-O-Flow Plus (July
2000) if application is 95 C
(200 F) to 204 C (400 F).
204 C (400 F) 120 VAC
6 Pin round
150 5/8-18 male
thread.
Retainer nut
with 1/8 npt(f)
27
244909 Valve, 230 Volt E-Heat
Replaces 243694 hard seat
and 243696 soft seat snuff-
back valves. Any Therm-O-
Flow Plus (after July 2000) if
application is 95 C (200 F)
to 204 C (400 F).
204 C (400 F) 230 VAC
8 Pin square
200 5/8-18 male
thread.
Retainer nut
with 1/8 npt(f)
23
297261 Complete Valve, 240 Volt
E– Heat; Swirl Equipped
204 C (400 F) 240 VAC
8 Pin square
200 5/8-18 male
thread with
swirl adapter
244937 244951 Valve, 230 Volt E-Heat
Replaces valve 243695
hard seat with 1/2” npt (m)
outlet. Any Therm-O-Flow
before Therm-O-Flow Plus
(July 2000) if application is
95 C (200 F) to 204 C (400
F).
204 C (400 F) 230 VAC
8 Pin square
150 1/2 npt (m) 23
245184 Valve, 120 Volt E-Heat
Replaces C34079 hard seat
with 1/2” npt (m) outlet. Any
Therm-O-Flow Plus (after
July 2000) if application is
95 C (200 F) to 204 C (400
F).
204 C (400 F) 120 VAC
6 Pin round
200 1/2 npt (m) 27

4309376L
Warnings
The following warnings are for the safe setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual
where applicable.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result in serious
injury.
•This equipment is for professional use only.
•Read all instruction manuals, warnings, tags, and labels before operating the equipment.
•Use the equipment only for its intended purpose. If you are uncertain, call your Graco distributor.
•Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
•Check the equipment daily. Repair or replace worn or damaged parts immediately.
•Do not exceed the maximum air working pressure of 1 MPa (8.3 bar, 120 psi) to the applicator.
•Do not exceed the maximum fluid working pressure of 24 MPa (241 bar, 3500 psi) to the applicator or manifold.
•Never exceed the recommended working pressure or the maximum air inlet pressure stated on your pump or in
the Technical Data on page 34.
•Be sure that all spray/dispensing equipment and accessories are rated to withstand the maxi- mum working
pressure of the pump. Do not exceed the maximum working pressure of any component or accessory used in the
system.
•Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces.
•Do not expose Graco standard hoses to temperatures above 180°F (82°C) or below -40°F (-40°C). Do not expose
Graco electrically heated hoses to temperatures above 400°F (222°C) or below -40°F (-40°C).
•Do not use the hoses to pull the equipment.
•Use only fluids and solvents that are compatible with the equipment wetted parts. See the Technical Data sections
of all the equipment manuals. Read the fluid manufacturer's warnings.
•Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid and solvent
manufacturers.
•Wear hearing protection when operating this equipment.
•Comply with all applicable local, state and national fire, electrical and other safety regulations.

309376L 5
WARNING
HOT SURFACE AND FLUID HAZARD
Heated fluid can cause severe burns and can cause equipment surfaces to become very hot.
•Wear protective gloves and clothing when operating this equipment in a heated system.
•Do not touch the metal heat sink when the surface is hot.
•Allow the equipment to cool thoroughly before servicing.
Some heated systems are designed to dispense Polyurethane (PUR) heated materials. PUR systems are supplied
with ventilation hoods, and require proper ventilation and specially designed system components.
SKIN INJECTION HAZARD
Spray from the applicator, hose leaks, or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious
injury.
•Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgical treatment.
•Do not point the applicator at anyone or at any part of the body.
•Do not put hand or fingers over the front of the applicator.
•Do not stop or deflect fluid leaks with your hand, body, glove, or rag.
•Follow the Pressure Relief Procedure on page 14 whenever you are instructed to: relieve pressure; stop
dispensing; clean, check, or service the equipment; or install or clean a tip or nozzle.
•Tighten all the fluid connections before operating the equipment.
•Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately. Permanently
coupled hoses cannot be repaired; replace the entire hose.
•ALWAYS wear eye protection and protective clothing when installing, operating, or servicing this dispensing
equipment.
•Do not remove or modify any part of the applicator; this can cause a malfunction and result in serious bodily injury.
•Use extreme caution when cleaning or changing tips. If the tip clogs while applying material, ALWAYS follow the
Pressure Relief Procedure on page 14, then remove the tip to clean it.
•NEVER wipe off build-up around the tip or air cap until pressure is fully relieved.

6309376L
WARNING
FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD
Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and result in fire or
explosion and serious injury.
•Ground the equipment and the object being sprayed. The Heated Automatic Dispense Valve is grounded to truth
earth ground inside the electrical control panel. See Grounding on page 9.
•Ground the equipment and the object being sprayed, and all other electrically conductive objects in the dispense
area. Proper grounding dissipates static electricity generated in the equipment. See Grounding on page 9.
•Do not use this equipment with flammable liquids.
•Keep the dispense area free of debris, including solvent, rags, and gasoline.
•If there is any static sparking or you feel an electric shock while using the equipment, stop dispensing
immediately. Do not use the equipment until you have identified and corrected the problem.
•Make sure all electrical work is performed by a qualified electrician only.
•Have any checks, installation, or service to electrical equipment performed by a qualified electrician only.
•Make sure all electrical equipment is installed and operated in compliance with applicable codes.
•Make sure power is disconnected when servicing and repairing equipment.
•Before operating the equipment, extinguish all open flames or pilot lights in the dispense area.
•Do not smoke in the dispensing area.
•Keep liquids away from the electrical components
•Disconnect electrical power at the main switch before servicing the equipment.
•Never exceed maximum wattage of the supply unit.
TOXIC FLUID HAZARD
Hazardous fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, swallowed,
or inhaled.
•Provide fresh air ventilation to avoid the buildup of vapors from the fluid being dispensed.
•Know the specific hazards of the fluid you are using.
•Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national
guidelines.
•Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and solvent
manufacturer.
•Avoid exposure to heated material fumes.

309376L 7
Installation
Install the automatic applicator as follows:
• mount the automatic dispense valve
• attach dispense tip or nozzle
• connect the air lines
• connect material hose
• if heated, connect the electrical cable
• if temperature conditioned, connect the water
circulation
• make sure the automatic dispense valve is
grounded
Ambient or temperature conditioned model shown
Fig. 1 ______________________________________
Mount the Automatic Dispense Valve
Mount the automatic dispense valve to the mounting
bracket on a stationary support or robotic arm (Fig. 1),
using two M6x1.0 socket head screws and two flat
washers. If your application is heated, be sure to
position the insulation block between the dispense valve
and the mounting bracket, (Fig. 2). Refer to the
dimensions on page 32.
TI1377A
Fluid
Inlet
Water
Circulation
Ports
Mounting
Holes

8309376L
Installation
Connect Air Lines to Dispense Valve
These valves are air to open and air to close with a
spring to bias them closed. Use a 4-way exhausting
solenoid to operate these valves.
Be sure to connect the appropriate air lines to the
appropriate ports (Fig. 2), and securely connect air lines
to dispense valve air ports. See page 32.
Connect Material Hose to Dispense Valve
Securely connect the material hose to the dispense
valve material inlet port. See Fig. 2.
Connect Electrical Cable to Electrically
Heated Dispense Valves
Connect electrical cable plug from your Therm-O-Flow,
Therm-O-Flow Plus, or PrecisionFlo hose or control.
A six-pin round connector is used on 120 volt valves and
an eight-pin square connector is used on 240 volt
valves.
Fig. 2 ______________________________________________________________________________________
CAUTION
Only use air fittings that are rated at a temperature
equal to or higher than the operating temperature
of your fluid dispensing system. Lower rated air
fittings could melt and cause damage to the
automatic dispense valve.
Open and Close
ports are on this
side.
Fluid Inlet
Temperature
insulation
spacer
240 volt heated model shown

309376L 9
Installation
Grounding
Electrically Heated Models.
Ground the automatic dispense valve:
1. Connect the connector from a heated hose to the
receptacle on the dispense valve.
Fig. 3 ______________________________________
Fig. 4_______________________________________
2. Connect the electrical cable to the electrical control
panel.
3. Verify that socket contact E on six pin models
(see Fig. 5) or contact eight on eight pin models
(see Fig. 4), inside control panel receptacle,
is connected to true earth ground.
See page 35 for schematics.
Snuff-Back
Snuff-back is created when the needle is pulled back
through a restrictive ring before it closes against the
carbide seat.
For maximum snuff-back, leave the ring in place.
For maximum flow with less snuff-back, remove the ring.
For additional snuff-back, use a quick exhaust valve
(104661) on the "open" air port.
Nozzle selection and gun movement also effect fluid
cut-off characteristics.
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
To reduce the risk of fire, explosion, or
electric shock:
• The power source conduit is not an
adequate ground for the system.
The unit must be grounded to either the
building ground or a true earth ground.
• A qualified electrician must complete all
grounding and wiring connections and
check the resistance.
• Refer to your local code for the requirements for a
"true earth ground" in your area.
• Also read and follow the warnings on page 6.
67
5
4
12
3
TI0305
240 Volt models
Ground lead
coming from pin
E is fastened to
the valve body.
Heater
cartridge RTD
sensor
Ground lead coming
from contact 8 is
fastened to the
valve body
120 Volt models

10 309376L
Installation
Connecting the Electrical Cable from a
Therm-O-Flow Plus Heated Hose
1. Wrap the hose cable around the hose one time.
Connect the electrical cable from the hose to the
valve cable; lock the metal clip on the top of the
connector. See Fig. 5.
2. Place the flat side of the cable connection against
the hose, making sure the metal clip faces away
from the hose. This will prevent damage to the hose
from the clip rubbing against it. See Fig. 6.
3. Secure the cable connector to the hose with heavy
tape or Velcro straps. For installations where the
dispense valve is moving, it is recommended that
the connector be wrapped with the Graco accessory
Velcro wrap (198422) and 2 Velcro straps (198442)
as shown in Fig. 7.
Fig. 5 ______________________________________
Fig. 6 ______________________________________
Fig. 7 ______________________________________

309376L 11
Maintenance
The following tables list recommended maintenance procedures and frequencies. The maintenance is divided
between mechanical and electrical tasks. A typical application is a valve mounted on a robot dispensing a
moderately abrasive sealant.
Mechanical
Electrical
Packing Lubrication
This valve has a primary seal, a pressurized grease
area, and a secondary seal. The key to long seal life is
that the secondary seal only has to seal grease.
When dispensing filled materials this grease should be
refreshed once a month.
1. Remove one of the zerk grease fittings (23).
2. Using a grease gun, pump a high quality grease like
#115982 (high temperature moisture free) into the
remaining zerk fitting until fresh grease comes out
the other side.
3. Replace the grease fittings and give the valve one
more shot of grease to pressurize the cavity.
Task
Daily Weekly Monthly or 30,000 cycles 3-6 months or 125,000 cycles 6-12 months or 250,000 cycles 18-24 months or 500,000 cycles 36-48 months or 1,000,000 cycles 6-8 years or 2,000,000 cycles
Inspect for leaks 
Check hoses for wear* 
Check/tighten fluid connections* 
Check/tighten air connections* 
Lube packings 
Rebuild dispense valve 
Replace valve 
* Assumes movement from automation.
Task
Daily Weekly Monthly 6 Months 12 Months
Check cables for wear 
Verify cable connections 
Verify resistance of electric heaters 
Verify resistance of RTD sensors 

12 309376L
Maintenance
Factors affecting valve life
The maintenance tables should be used as a guideline
for frequency of maintenance tasks. Additional factors
that affect valve life include the following:
•Process fluid - Abrasive or fiber filled fluids are
much harder on seals, shafts, and seats than
non-abrasive fluids such as oil.
•Pressure drop across the valve seat - As the
valve opens or closes, the fluid is accelerated to a
high velocity at the needle/seat contact area. The
rate of wear at the valve will be much greater at
3000 psi than at 1000 psi. Changing nozzle or tip
size can have a substantial affect on wear.
•Number of cycles - This has a much greater affect
on valve wear than number of gallons. If you can do
the same job with fewer on/off cycles, the valve will
last longer.
•Speed of actuation - Snapping the valve open and
closed quickly will give longer needle and seat life.
Avoid long air tube runs after the solenoid, or use
quick exhaust valves (104661) on the dispense
valve.
•Air pressure - This is what provides the force to
hold the hardened SST needle against the carbide
seat to seal against fluid pressure. Any leakage on
these hard parts, at high pressure, will quickly
"worm-hole" the parts and cause the valve to fail.
This valve has been designed with two air pistons to
give it an exceptionally high, 68:1 advantage of air
pressure to fluid pressure. This means that you can
reliably operate at 60 psi of air, even with 4000 psi
of downstream pressure.

309376L 13
Troubleshooting
Some solutions require disassembling the automatic dispense valve. Always relieve system pressure before per-
forming these procedures.
See PARTS section for the parts that need to be serviced.
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 14).
Problem Cause(s) Solution(s)
Air leaks from automatic
dispense valve
Loose air connections Check air connections.
Worn o-rings Replace o-rings in cylinder.
Material leaks from front of
automatic dispense valve
Seal, needle, or seat is worn Replace seat seals (12 & 26), needle (7),
and seat (13).
Obstruction inside dispense valve Remove nose piece (6). Check and
replace if necessary, seals (12 & 26),
needle (7), and seat (13).
Worn needle Check and replace needle (7), if
necessary. If replacing needle, you must
reverse or replace seat (13).
Worn seat (Base seal models) Check and replace or reverse seat (13) if
necessary. Replace needle (7) with seat
(13).
Material leaks from automatic
dispense valve body
Seal not installed correctly Check seals (15 & 16) and replace if
necessary.
Seal is worn
Automatic dispense valve does
not shut off
Loose air connections Check air connections.
Worn needle-seal interface Replace rod seal (12 & 26), needle (7),
and seat (13).
Automatic dispense valve does
not shut off
Broken retaining ring (10) or debris in air
cylinder.
Disassemble dispense valve. Check and
replace, if necessary, retaining ring (10)
and o-rings (17, 18, 19 and 21).
Automatic dispense valve does
not shut off
Spring broken or not installed correctly Disassemble dispense valve. Check
spring (24) and replace, if necessary.
Automatic dispense valve does
not heat material
Loose heater wires Check and reconnect wire connections.
Loose sensor wires Check and reconnect wire connections.
Heater unit failed Replace heater.
Sensor failed Replace sensor.
Temperature controller failed Replace temperature controller.
No power to heating circuitry Apply power to heating circuitry.
Automatic dispense valve will
not open
Fluid pressure in outlet line greater than
24.1 MPa (241 bar, 3500 psi)
Reduce outlet restrictions
Reduce fluid pressure
Air cylinder pressure too low Increase air pressure

14 309376L
Service
Pressure Relief Procedure This procedure describes how to relieve pressure from
the automatic dispense valve. See your supply unit or
system documentation for instructions on relieving
pressure for the entire dispensing system. Use this
procedure whenever you shut off the dispense valve
and before checking or adjusting any part of the system,
to reduce the risk of serious injury.
1. Shut off the material supply.
2. If heated, shut off electrical power to the automatic
dispense valve.
3. Close all self bleeding air supply valves for supply
unit.
4. Have a container ready to catch the drainage, then
bleed off material pressure by actuating the
dispense valve.
5. Shut off air supply to valve.
NOTE: If you suspect that the nozzle or hose is
completely clogged, or that pressure has not
been fully relieved after following the steps
above, very slowly loosen the tip retaining nut
or hose end coupling to relieve pressure
gradually, then loosen completely. Then clear
the tip/nozzle or hose.
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment will be hot!
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when installing, operating, or servicing this
dispensing system.
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected
through the skin and cause serious injury.
To reduce the risk of an injury from
injection, splashing fluid, or moving parts,
follow the Pressure Relief Procedure
whenever you:
• are instructed to relieve the pressure
• stop spraying/dispensing
• install or clean the nozzle
• check or service any of the system
equipment
PRESSURIZED FLUID HAZARD
High pressures can cause serious
personal injury. Be sure to open the
dispense valve during system heat-up
to alleviate pressure which might occur in
the system due to material expansion.

309376L 15
Service
Prepare to Service Automatic Dispense
Valve
If the unit is hot, determine whether or not you can
service the unit after it has cooled down. Some
materials, like polyurethanes, may cure permanently
when cooled and exposed to air, preventing you from
disassembling the dispense valve. If you are working
with such a material, service the unit while the material
is at a temperature where the material is soft enough to
work with. If the material can be reheated at a later time,
you can service the unit after it has cooled, reheating
the material as necessary.
Perform this procedure before servicing the automatic
dispense valve.
1. Relieve the system pressure.
2. Make sure material flow has been shut off.
3. Make sure system air has been shut off.
4. Remove power from the automatic dispense valve.
5. If the material in the dispense valve can be
reheated, wait for the dispense valve to cool
thoroughly before servicing it.
If the material in the dispense valve cures
permanently when cooled and/or exposed to air,
service the unit while the material is at a
temperature where the material is soft enough to
work with.
WARNING
To reduce the risk of serious injury, whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 14).
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment will be hot!
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when servicing this dispensing system
component.

16 309376L
Service
Service the Automatic Dispense Valve
The dispense valves can be serviced or replaced
without disconnecting the fluid hose or temperature
control cables or tubes.
Disconnect Automatic Dispense Valve from its
Inlet Manifold
Remove the automatic dispense valve from its mounting
bracket.
1. Perform the procedures in Prepare to Service
Automatic Dispense Valve on page 15.
2. Disconnect air lines from dispense valve air ports.
3. Remove 4 M-6 socket head screws that connect the
valve body to the inlet manifold. (see Fig. 8.)
4. Pull the valve body straight away from the inlet
manifold.
Reconnect Automatic Dispense Valve to Mounting
Bracket
1. Install new o-ring on fluid passage and water
passages if used.
2. Line up valve body with locating pins and heater
and sensor if used.
3. Push valve straight on to pins. Torque retaining
screws evenly to 50-60 in/lb.
4. Reconnect air lines to dispense valve air ports.
Fig. 8 ______________________________________________________________________________________
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment will be hot!
To reduce risk of injury, wear eye
protection, gloves and protective clothing
when servicing this dispensing system
component.
TI1378A

309376L 17
Service
Valve models 244535, 244907, and 244937
NOTE: See parts drawing on page 20 for parts
referenced in parentheses ( ).
Disassemble Automatic Dispense Valve
NOTE: The fluid section and the air section can be
serviced independently.
Fluid Section
1. Remove 4 screws (22) and pull the nose piece (6)
straight off.
2. Insert a 3/32 punch or an allen wrench through the
hole in the head of the needle (7) and unscrew from
shaft (8). Another punch can be used through the
hole in shaft (8) to keep it from turning.
3. Remove seat (13) and gasket (12).
4. Pull fluid housing (5) and grease bearing housing
(4) from the shaft.
Air Section
1. Remove 4 screws (22) from top of valve. Pull top air
cylinder housing (1) straight off.
2. Remove the first retaining ring (10), piston (9), and
second retaining ring (10).
NOTE: Use only the new retaining rings provided in
repair kit when reassembling air section of valve.
3. Pull lower air cylinder housing (2) straight away from
housing (3)
4. Remove shaft (8) if fluid section has been
disassembled.

18 309376L
Service
Assembly of Automatic Dispense Valve
Valve models 244535, 244907, and 244937
NOTE: See parts drawing on page 20 for parts
referenced in parentheses ( ). See service drawing on
page 19 for references to steps in this procedure [x].
Air Section
1. Lubricate all seals and sliding parts with a high
temperature, moisture free grease such as
#115982 grease cartridge (ordered separately).
2. Assemble o-rings (17), (19), and (21) into or onto
their respective parts as shown. Install o-ring (18)
only to housing (3).
3. Insert shaft (8), (small end first) into housing (3).
NOTE: • Do not overextend retaining ring (10) during
installation and repair.
• Make sure to assemble retaining ring
longitudinally down the shaft diameter.
• Do not stretch the ring around the diameter.
• Use only the new retaining rings provided in
repair kit when reassembling air section of
valve.
4. Assemble the lowest retaining ring (10 ) on the
shaft. Add o-ring (18) onto the shaft, then add spring
(24), a piston (9), and the next retaining ring (10).
5. Slide housing (3) straight down over shaft (8) with
pieces aligned as shown.
6. Add next retaining ring (10), o-ring (18), piston (9),
and last retaining ring (10).
7. Insert button (33) into housing (1) and push
assembly down over the piston and shaft.
8. Align the open/close air ports as shown.
9. Insert four screws (22) and torque evenly to 40-50
lb-in.
Fluid Section
10. Lubricate all seals and sliding parts with a high
temperature, moisture free grease such as
#115982 grease cartridge (ordered separately).
11. Carefully insert “U” cup (15) into bearing (11) with
the open end of the seal facing into the bearing.
Install o-ring (21) on the outside groove of the
bearing.
12. Insert the bearing, “U” cup end first, into the grease
housing (4). Push this assembly onto shaft (8) while
holding bearing (11) into housing (4).
13. Carefully insert “U” cup (16), lips first, into the
appropriate end of housing (5). Push this assembly
onto shaft (8), up against housings (3) and (4).
14. Place the valve in a vice such that it is pushing
button (33) to compress the spring.
15. Place the clear plastic gasket (12) and seat (13) into
their groove on housing (5). The seat is reversible
and can go in either way.
16. Insert needle (7) through seat (13). While holding
shaft (8), screw the needle (7) into shaft (8) using
Locktite blue thread locker. Tighten with a 3/32 pin
or punch to approximately 15-20 lb-in.
17. Place snuff-back ring (14) in nose piece (6) and
white o-ring (26) in its groove on housing (5). Align
nose piece (6) and push straight into place. If higher
flow and less snuff-back is desired, do not use the
snuff-back ring (14).
18. Insert four screws (22) with Locktite blue thread
locker and tighten evenly, compressing bearing (11)
to 40-45 lb-in.
19. Cycle valve 25 times at full air pressure to set
hardened needles to carbide seat.
20. Install one fitting (23). Pump grease (27) across
bearing (11) and out other side. Install second fitting
(23) and apply another shot of grease.
21. Use pipe thread sealant on plugs (36 and 35).

309376L 19
Service
Fig. 9 ______________________________________________________________________________________
TI1379A
[1]
[1]
[1]
[12]
[11]
[1]
[1]
[1]
[1]
[20]
[14]
[17]
[15]
[16]
[8]
[21]
[18]
[x] Refers to instruction steps from
procedure on page 18.

20 309376L
Parts
Model numbers 244535, 244907, and 244937
TI1380A
1
234 56
7
17
26
15 14
18 12
11
10
813
9
33
21
19 21 23 21 16
22 22
35
36
TI1379A
24