
10
Forbes Marshall Cast Strainer
Failure Mode
Possible Cause
Remedy
No flow through strainer.
Strainer screen is
clogged with rust or
debris.
Flush inline drip leg or pipeline and clean the
screen. If screen is rusted, replace with new
screen.
Increased pressure drop
across the strainer.
Screen is blocking
up.
Clean or replace the screen.
Fluid leakage from strainer
pocket.
Gasket deterioration
or damage.
Replace with new gasket and tighten the nut
of the Strainer cap to the recommended
torque.