WIL-11570-E-02
15
WILDEN PUMP & ENGINEERING, LLC
A I R V A L V E D I S A S S E M B L Y
To o l s R e q u i r e d :
• 5 mm (3⁄16") Allen
Wrench
• Snap-Ring Pliers
• O-Ring Pick
CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge and air lines. Drain the pump by turning it
upside down and allowing any fluid to flow into a suitable container. Be aware of
hazardous effects of contact with your process fluid.
The Wilden P220/P230 metal pump uses the revolutionary Pro-Flo
®
air distribution
system. A 6 mm (1⁄4") air inlet connects the air supply to the center section. Proprietary
composite seals reduce the co efficient of friction and allow the pump to run lube-
free. Constructed of polypropylene, the Pro-Flo
®
air distribution system is designed to
perform in on/off, non-freezing, non-stalling, tough duty applications.
Step 1
Loosen the air valve bolts utilizing
a 5 mm (3⁄16") Allen wrench.
Step 2
Remove muffler plate and air valve
bolts from air valve assembly
exposing muffler gasket for inspec-
tion. Replace if necessary.
Step 3
Lift away air valve assembly
and remove air valve gasket for
inspection. Replace if necessary.
