Running Blowdown Valve Maintenance - Sullair 20/12 Series Operator's Manual And Parts List

Figure 6-9 Fluid Stop Valve (P/N 250038-489)
*Repair Kit P/N 250038-494 (o-rings & poppet)
**Repair Kit P/N 250038-490 (piston & parts)
14. Install piston rod guide with new o--ring installed.
15. Install piston rod if provided.
16. Install the spring onto the piston rod guide with
large side down.
17. Install the quad ring and the two (2) Teflon rings
onto the piston. Coat the quad ring with Parker
Super "O" ring seal or equivalent quality silicone
grease.
18. Install the piston into the pilot cylinder.
Section 6
MAINTENANCE
NOTE
Cylinder is chamfered on one end. Install from this
side.
19. Install the two (2) seals; one into the cover and the
other onto the piston rod guide.
20. Place cylinder over pilot guide.
21. Replace the cover and the four (4) nuts onto the
cover. Tighten nuts alternately at opposite sides
of the cover in a crisscross patter. Check to see
that cylinder is seated on seals on both ends.

RUNNING BLOWDOWN VALVE MAINTENANCE

Ref er t o F igur e 6 -- 10. W hen it is nec es s ar y t o r epair
the running blowdown valve (P/N 045116), use re-
pair kit no. 047524, and follow the instructions pro-
vided below.
1. Remove the hex nut from the bottom of the valve.
The poppet guide which is secured by the hex nut
is under slight spring tension.
2. Remove the poppet guide, poppet assembly and
spring from the valve body.
Figure 6-10 Running Blowdown Valve
(P/N 045116)
* Repair Kit P/N 047524
27