CSA air valve Mod. SCF
8
Troubleshooting (ref. drawing 1 on page 7)
Condition
Possible Cause
Corrective Action
Valve leaks at flange joint.
Loose flange bolting.
Tighten flange bolting.
Blown flange gasket.
Replace flange gasket.
Miss-alignment or damage to
field piping and supports.
Adjust miss-alignment or repair
piping or supports.
Damaged flange face/s or
improper flange connections.
Repair flange, replace valve
body or adjust flange
connections.
Valve leaks out of the main
sealing seat (14).
Valve is not vertical
Place the valve in a vertical
position
Possible corrosion through
the body and seat
Check the fluid chemicals
parameters and contact CSA
Dirty seat and/or upper float
Clean seat and/or float.
Worn seat and/or float.
Replace seat and/or float.
Line pressure is under 0,3 bar
Replace seat with softer seat.
Worn O-ring between seat
and body
Inspect and replace O-ring
Valve leaks out of the air
release subset (9 and 10)
Valve is not vertical
Place the valve in a vertical
position
Possible corrosion through
the air release subset
Check the fluid chemicals
parameters and contact CSA
Dirt accumulated on the air
release subset (9 and 10)
Inspect and clean the air release
subset, replace if necessary
Line pressure is under 0,3
Replace seat with softer seat.
