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Operating & Service Manual 5 OPS-806 Rev.02
this position.
c) Inject grease into the valve cavity through the other body grease fitting.
d) Once completion of lubrication, remove releasing tool and grease pump. Re-install grease fitting caps
securely on the both fittings.
CAUTION:
Lubricating pressure must not exceed the rated working pressure of the valve being
lubricated. A pressure gage should be used to motitor the lubricating pressure.
4.2 Stem Bearing Assembly Lubrication
Regular lubrication of the stem bearing assembly is essential to maintain a trouble free and smooth
operation of a valve. A small amount of good lithium based bearing grease is injected to bearing housing
through the grease zerk located on the bonnet with a hand held lubricator. DO NOT overfill.
4.3 Stem Packing Maintenance
In the event of stem packing leakage, injectable packing may be injected into stem packing box through
the injection fitting located on bonnet.
Caution shall be taken if this procedure is being done while the valve is in service and under pressure.
Packing Injection Procedure
a) Remove the hex head fitting stringer, insert injectable packing stick into injection fittings.
b) Run stringer all the way in against the stem
packing fitting then back out when in terms
of ensuring the ball check has seated.
Discontinuous operation may be required to
evenly distribute the sealant, generally
once the pressure rises above valve rated
pressure, hold for 2 or 3 minutes.
Hand Lubricator