Ball Valve cross-section
Seat & Seal arrangement cross-section
|
The lubrication of a ball valve requires a different practice to
the lubrication of either a gate valve or plug valve.
Field experience has shown that greases and sealants can cause severe
problems with the seat and arrangement. If a non-leaking ball valve
is lubricated with an adhesive grease / sealant, the floating spring
loaded seats can become stuck within their seat pockets. When the ball
floats due to a pressure differential across the valve, the
seals can no longer track the ball and leaking can occur. 601
Fluid is a viscous, fluid type version of 601.
It cab be injected routinely to flush and lubricate the
ball valve. The fluid does not dry out or form a
gum, when used within its application temperature
range. Therefore it does not disrupt the operation
of the seat and seal arrangement. 601
Fluid is a synthetic ball valve lubricant designed
to provide enhanced resistance to hydrocarbon fluids and
gases, sour service, C02, acids and
completion fluids. For
leaking ball valves, Valve Lubricant 601 should
be injected, which acts as a high pressure sealing
compound without hardening within the seal arrangement. |
Richard Grantham, Divisional Manager - Oil & Gas +44
(0) 7768 140 206
