Shafer Valve

Description: Rising stem gate valve applications on natural gas pipelines, utilizing gas over oil power pressure for the actuator. Emergency shutdown. Line break protection. High thrust requirements For gate valves or rising stem ball and globe valves. Gate valves on product pipelines where

• Valve Motion: Linear Motion Valve
• Hydraulic Actuator Type: Piston Cylinder Actuator
• Acting Type: Single Acting, Double Acting
• Limit Switch / Remote Position Indicator: Yes

Description: Rising stem gate valve applications on natural gas pipelines, utilizing gas over oil power pressure for the actuator. Emergency shutdown. Line break protection. High thrust requirements For gate valves or rising stem ball and globe valves. Gate valves on product pipelines where

• Actuation Method: Hydraulic
• Valve Motion: Linear Motion Valve
• Operation: Modulating
• Location: Non-hazardous

Description: Opposite chambers in the actuator are connected by pressure equalizing passages in the upper and lower heads. In this manner, the actuator produces perfectly balanced torque as hydraulic force simultaneously pushes both of the rotor vanes away from the stationary shoes.

• Actuation Method: Pneumatic
• Valve Motion: Rotary Motion Valve
• Operation: Modulating
• Full Range Of Rotary Motion: Quarter Turn ( 90 degrees)

Description: . A hydraulic accumulator holds supplemental power to supply the specified number of valve strokes. The accumulator head pressure is provided by the natural gas in the pipeline which eliminates the need for additional pressure vessels.

• Pump Type: Single Stage
• Power Source: Electric Motor, Other
• Cooling Method: None
• Features: Overpressure Protection

Description: Fabricated housing, Teflon wear rings, adjustable travel stops

• Valve Motion: Rotary Motion Valve
• Full Range Of Rotary Motion: Quarter Turn ( 90 degrees)
• Control Signal Input: Pressure Control Signal
• Hydraulic Actuator Type: Piston Cylinder Actuator

Description: Closed system, fast operation without shock, fail-safe reserve power

• Pump Type: Single Stage
• Power Source: Electric Motor, Other
• Cooling Method: None
• Features: Overpressure Protection