Saf-T-Vise STV-HP1 and STV-HP3 11
Troubleshooting
Leaks
Multi-Port Valve Leaks
1.
Isolate and bleed down the pressure, and attempt to tighten the leak point If leak persists, continue with next step
2.
Re-tape the fittings on the multi-port valve
a.
Remove the entire holder from the process line
b.
Remove the multi-port valve from the holder
c.
Disassemble and remove all the old Teflon tape from the multi-port valve and then re-tape the fittings
d.
Reassemble the multi-port valve using a small amount of anti-seize lubricant on each fitting Do not over-tighten
the fittings as this can cause a leak point
3.
If the leak persists at a particular point, close the isolation valve, relieve pressure with bleeder valve, and contact
your representative or factory customer service
Seal Leaks
Teflon Seal:
If the holder is leaking from the top of the holder body where the rod/shaft and body meet, the Teflon seal is damaged
and requires replacement See section on “Seal Replacement” on page 8
Graphoil Seal:
If the holder is leaking from the top of the holder body where the rod/shaft and body meet, the graphoil seal is most
likely loose
1.
Adjust the top body to tighten the seal
a.
Loosen the small set screw on the upper body
b.
Using a crescent wrench on the top body wrench flats, turn the upper body clockwise in 1/4-turn increments until
the leak stops
c.
Turn the upper body an additional 1/4 turn clockwise
d.
Re-tighten the small set screw on the upper body to prevent the body from loosening
e.
If leak persists, the graphoil seal is damaged and requires replacement See section on “Seal Replacement” on
page 8
Connection Leaks
1.
If the holder leaks from any threaded portion, immediately isolate the holder from the line and remove process
pressure
2.
Remove the holder from the isolation valve
3.
Follow the procedure for Prepping a Holder for Reinstallation
– This procedure can be used for all connection points on a holder including the multi-port valve, probe shaft
adapters, bleeder valves, and any other connections that may be on the holder
Bleeder Valve Leaks
If the holder leaks from the bleeder valve outlet or bleeder valve stem, the bleeder valve is damaged and should be
replaced Contact the factory to order a replacement valve