Low Differential Applications

Can accurately control at pressure differentials as low as 1 psid / 70 mbar d

Precise Pressure Control

Provides stable and accurate downstream pressure control regardless of load changes or inlet pressure variations.

Quiet Operation

The Whisper Trim™ Cage option reduces noise by up to 30 dBa.

Easy In-Line Maintenance

Top entry design enables easier maintenance. Trim parts can be inspected, cleaned and replaced without removing the body from the pipeline.

No Atmospheric Bleed

Eliminates nuisance and wasteful bleed gas to the atmosphere by utilizing a pilot-operated control system, which bleeds 100% of the gas to the downstream system.

High Turn Down Capability

The oversized diaphragm and linear cage allow for high turn down, providing superior pressure control in systems with large variations in downstream flow demand.

Tight Shutoff

A knife-edged metal plug and soft seat provide bubble-tight shutoff for use in applications where the positive shutoff is required such as dead-end systems.

Travel Indicator

Simplifies in-service inspection and system troubleshooting

Technical Data

Body Sizes and End Connection Styles

Body Sizes: NPS 1, 2, 3, 4, 6, 8 x 6, 12 x 6 / DN 25, 50, 80, 100, 150, 200 x 150, 300 x 150
End Connections: NPT, CL150 RF, CL300 RF, CL600 RF, CL125FF, CL250RF, BWE, SWE, or PN 16/24/40

Maximum Inlet Pressure

400 PSIG / 28 bar or body rating limit whichever is lower

Temperature Capabilities

Nitrile (NBR): -20° to 180°F / -29° to 82°C
Fluorocarbon (FKM): 0° to 300°F / -18° to 149°C
Ethylenepropylene (EPR): -20° to 275°F / -29° to 135°C


  • Natural gas distribution systems
  • Fuel gas supply to industrial boilers
  • Furnaces
  • Ovens and mixers


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