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GW - Model C300 -Fluid Control Valve Actuator
This auxiliary actuator provides either pneumatic or hydraulic pilot line operation of a C-300 valve to open or close upon instruction.The GW C-300 Actuator is developed and designed for maximum reliability when installed and operated in the harshest on-shore and off-shore environments. To prevent any malfunctioning due to components seizing, sticking or corroding, the number of moving mechanical parts has been reduced to an absolute minimum, and the few moving parts present are ALL 100% isolated from the flow media - i.e. no water contact. The only moving component in contact with the flow media is the elastomeric pilot sleeve
This auxiliary actuator provides either pneumatic or hydraulic operation of a C-300 valve to open or close upon instruction.
In the normal (in service) energized mode, with air/hydraulic pressure on, the spindle controlling the internal valve ports is pushed to bottom position, and the ports CP3 and CP4 are connected open. At the same time the ports CP1 and CP2 are blocked. When the actuator is de-energized, the compression spring pushes back the spindle to its top position, whereby CP1 and CP2 are connected open – and CP3 and CP4 are blocked.
CP5 is a non-regulated auxiliary port (normally plugged), by which the actuator pressure can be monitored (e.g. for an alarm).
The actuator is available with or without latch. If fitted, the latch (spring actuated) locks the actuator spindle in the top position, when the actuator is de-energized. This is a Safety feature to always keep the actuator in the actuated position, once it has been de-energized.
To reset the actuator, the manual reset latch (located under CP5) must be pulled (and kept pulled) while energy supply is reinstated.