736HPA-NV High Pressure Dispense Valve
2
www.nordsonefd.com [email protected]
800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
Valve Disassembly and
Reassembly Procedures
To replace the lower seal:
1. Remove the three bolts from the outlet cap.
2. Remove the outlet cap.
3. Pry the seal out of the outlet cap using a small
screwdriver.
4. Clean the seal cavity and then press a new seal
into the cavity. Insert tapered end first, so that the
O-ring faces up.
5. Inspect the fluid body O-ring and replace if
necessary.
6. Reinstall the outlet cap. Tighten the three bolts to
30 to 35 inch pounds.
To replace the upper seal:
7. Remove the three bolts from the outlet cap.
8. Remove the outlet cap and fluid body.
9. Pry the seal out of the fluid body using a small
screwdriver.
10. Clean the seal cavity and then press a new seal
into cavity. Insert seal with O-ring facing inside the
fluid body.
11. Reinstall the outlet cap and fluid body. Tighten the
three bolts to 30 to 35 inch pounds.
To replace air cylinder seals:
12. Remove the three bolts from the outlet cap.
13. Remove the outlet cap and fluid body.
14. Unscrew the adjustable stroke air cap.
15. Remove the piston-and-spool assembly and the
piston return spring.
16. Replace the O-rings on the spool, piston and air
cylinder body.
17. Apply Nye lubricant #865 gel to piston, spool and
air cylinder wall.
18. Reinstall the piston return spring, piston and
spool assembly and then the adjustable stroke air
cylinder cap. Tighten the air cap between
8 to 10 foot pounds.
19. Reinstall the fluid body, outlet cap and tighten the
three bolts to 30 to 35 inch pounds.
Do not thread fluid inlet fittings too far into the valve.
Doing so can obstruct the piston shaft, causing
leakage, poor dispensing performance, and damage
to the valve.
CAUTION
Air cylinder
body
#7013448
O-ring
#7014687
Fluid body
#7021158
Split washer
#7023626
Upper seal
#7014745 (Hytrel
®
)
#7014746 (Viton
®
)
1
2
5
8
7
12
13
Bolts
#7023395
Outlet cap
#7021160
Lower seal
#7014745 (Hytrel
®
)
#7014746 (Viton
®
)
