User Guide

50-60 Hanover Road, Florham Park, New Jersey 07932
ASCO Valves
Page 4 of 4 Form No.V6493R3
disc
snubber
aspirator tube
piston
body gasket
support
bonnet screw
valve bonnet
valve body
piston spring
piston assembly
lip seal
bleed gasket
bleed washer
flow control
(see note)
lower bleed washer
(small diameter)
CAUTION
Do not remove
body plug
(see instruction)
valve seat
Indicates Parts Supplied
In ASCO Rebuild Kits
Note:
Concave end of flow control to
face valve bonnet.
core
(small end up)
plugnut
solenoid base gasket
adapter
stem
disc holder assembly
disc holder spring
adapter gasket
solenoid base
sub-assembly
assembly
Part
Torque Value
In-lbs
Torque Value
Nm
solenoid base
sub-assembly
and adapter
Torque Chart
valve seat
bonnet screws
175 25
65 15
144 15
19,8 2,8
7,3 1,7
16,3 1,7
±
±
±±
±
±
Name
Special Wrench Adapter
For Solenoid Base
Sub- Assembly
(Order Kit No. K218950)
Figure 2. Series 8221 valve without solenoid, 2 or 2 1/2 NPT, suffix HW" construction shown.