© Meunier Technologies Inc. 2021 - All rights reserved 39
Troubleshooting
Trouble Possible reason Action
Insufficient pressure on the connector from
the mushroom nut
Hand tight the connector
by screwing the
mushroom nut
O-ring failure Replace the o-ring
Leaking fluid from the
connector
Carrier o-ring failure Replace carrier o-ring
Replace both ball valve
seat and seat o-ring
Loosen ball valve carrier
Excessive pressure between ball and seats
Excessive torque on stem nut
Unscrew the stem nut
and tighten to 30 lb-in
Brocken stem Replace the stem
Brocken stem/handle coupling
Replace the stem and
handle
Brocken stem/ball coupling Replace the stem and ball
Presence of leakage next to
the ball valve handle
Stem or Stem nut O-ring failure
Replace the stem o-ring
and stem nut o-ring
Leaking from the adjustment
screw
Ruptured diaphragm Replace the diaphragm
Ruptured diaphragm Replace the diaphragm
Insufficient pressure between the
diaphragm and the block
Tighten the 4 mounting
screws to 35lb-in
Adjustment screw not
working
Regulating valve spring failure Spring replacement
Tighten the pressure
gauge NPT connection on
the isolator
Ruptured diaphragm; chemical attacked
pressure indicator connection
Bleeding screw o-ring failure
Leaking from the valve block
interface
Ball valve not fully opening
and closing; or excessive
torque required to operate
Back Pressure and Pressure Relief Valve
Insufficient tightening of the pressure
gauge NPT connection on the isolator
Ship the isolator and
pressure gauge assembly
to our facility
Leaking fluid from the
pressure indicator NPT
connection
Leaking from the bleeding
screw
Adjust the carrier
position according to the
ball valve assembly
section
Handle not operating the ball
valve
Leaking ball valve (fluid
passing thought the valve in
closed position)
To Previous Page
Loading...