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8. Troubleshooting
CAUTION
When the product fails to operate properly, use the following table to locate the cause and
remedy.
Problem
Fluid leaks
The valve sealing section is clogged with rust or
from the outlet
scale, or the O-ring is scratched or damaged
side
Fluid leaks
Sealing surfaces and/or gaskets are clogged
from the gland
with rust or scale, damaged or worn
section
The valve does
The valve seat and the ball are clogged with rust
not move or
or scale, or the valve seat is deformed
remained half
The handle is worn or deformed
open
Gasket deterioration or damage
Fluid leaks
from where the
The cover nut is not properly tightened
inlet cover is
assembled
The valve seat
Water hammer has occurred
is damaged
The product is being used with the valve(s) half
open
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product has
cooled to room temperature.
Cause
̶ 12 ̶
Remedy
Clean or replace with new
parts
Tighten, clean or replace
with new parts
Clean or replace with a new
valve
Replace with a new handle
Replace with new gasket(s)
Tighten it to the proper
torque
Check whether there is a
problem with the piping.
Use the product with the
valves fully opened or fully
closed.
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