ITT
Engineered Valves, LLC
Page 10 of 22
Technical Manual No. IOT1000P
Effective 8/31/2018
REV LEVEL B
D.
Start-Up
When valve is placed in service, stroke the main stem and oil stem two or three
times (Fire cycles) and then check for packing leaks. If leakage is present, tighten
adjusting nut 1/8 turn, stroke valve several times to ensure proper setting of
packing and recheck. Repeat until leakage is stopped. This should occur before
nut is completely tight. If leakage is present when nut is completely tight, packing
must be replaced and the stem inspected for wear. Refer to instructions in Section
V.
CAUTION
D
O NOT OVER
-
TIGHTEN PACKING
. Over-tightened packing
may cause excessive stem friction, inhibiting stem
movement
.
IV.
MAINTENANCE AND DISASSEMBLY INSTRUCTIONS
A.
Maintenance
The Skotch Trifecta Valve Systems requires periodic maintenance and
adjustments in order to function properly. The following is a list of items which,
must be inspected on a regular basis.
1.
Testing Oil Valve Seal
Periodic leak testing should be performed per all applicable codes to
verify proper operation of oil valve seal. See Section V for leak testing
procedures.
2.
POC Verification
Periodic testing should be performed per all applicable codes to verify
proper operation of the oil valve POC switch. See Section VI for POC
switch setting procedures.
