Severe Service Control Valves

Applications

• Hydrocarbon refining systems requiring high pressure/high differential precision pressure control
• Injection pump pressure control
• Backpressure regulation for pump testing systems
• Boiler feed water injection flow control
• Natural gas production flow control when fluid is contaminated with water and erosive solids
• Any fluid control application where cavitation damage to control valves has been observed

How A Severe Service Control Valve Works

• The valve Stem rotates by a multi-turn electric actuator in response to control signal.
• The pinion gear on the Stem engages teeth on the Sleeve arranged on a helical path.
• The Power Threads on the sleeve have the same pitch as the helix of the Sleeve teeth, causing it to translate as it rotates.
• The Plug is fixed to the intake hub of the valve body, with the contoured center portion suspended in the center by vanes on the upstream side.
• Fluid flow is modulated as the distance between the Seat and Plug changes.

Features

• Multi-turn valve stem for precise control with low torque requirement.
• Complies with API 6A or ASME B16.34 for materials and construction.
• Triple-sealed to contain process fluid up to 450F.
• Ultralube™ coated flow path and actuation components.
• Nitrocarburized 17-4PH stainless steel trim components.
• Tungsten carbide or 440C Seat, TC Plug optional.
• End configurations to suit wide variety of applications.

Product Information