Class1 Valve - 119138 User Manual
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Class 1 Valve Manual
p/n: 119138
CONDITION: Valve operation requires excessive effort to OPEN or CLOSE.
REMEDY:
•
If equipped with slow-close actuator, remove the slow-close module and operate the valve. If the valve
operates normally, replace the slow-close actuator.
•
If equipped with the gear actuator, verify that the gear actuator, actuator handle, and drive shaft are
not damaged or bent, and are lubricated. Remove the gear actuator and operate the actuator and
valve separately, to determine which components are at fault.
•
Loosen and re-torque the 3/8”-16 adapter flange mount bolts to 45 ft-lbs (Grade 8) in a criss-cross
pattern to ensure an EVEN seal.
•
Remove the outlet adapter. Inspect the valve ball, valve seals, valve stem, and o-ring seals for foreign
debris, deterioration, or damage. Replace as necessary.
CONDITION: Valve leaks.
REMEDY:
•
Isolate the location of the leak. Is the valve leaking internally (leaking when closed) or externally
(through the seal to an inlet or outlet adapter)?
•
Shut down the pump and verify system pressure has been relieved. See warning at beginning of this
chapter.
EXTERNAL LEAK:
•
Between valve and adapter – Loosen the four adapter mounting bolts and re-torque to 45 ft-lbs (Grade
8) in a criss-cross pattern to ensure an EVEN seal.
•
Remove the leaking valve seal and visually inspect for foreign debris, deterioration, or damage (cracks,
splits, flat spots, etc), especially around the adapter / seal interface. Replace parts as necessary.
•
Valve stem area – Remove outlet adapter, valve handle/lever, and ball. Remove the valve stem and
inspect all o-rings for deterioration or damage (cracks, splits, flat spots, etc.). Replace parts as
necessary.
INTERNAL LEAK (through ball):
•
OPEN and CLOSE the valve several times and visually inspect the valve ball to ensure the valve closes
completely.
•
Loosen the four adapter mounting bolts and re-torque to 45 ft-lbs (Grade 8) in a criss-cross pattern to
ensure an EVEN seal on both the adapters and the ball.
7. Troubleshooting
7. Troubleshooting