Products/Pressure Reducing Valves/EFM1

SELF-OPERATED PRESSURE REDUCING VALVE

EFM1
  • Self-operated downstream pressure control without external actuation
  • DN15 to DN150 with flanged or threaded connections
  • Condensation tank required for steam or fluids above 125°C
EFM1 M1 pressure reducing valve product render
EFM1 M1 pressure reducing valve product render
Datasheet

Applications

Configured Service Scope
Compressed Air
Gas
Steam
Water

Key Specifications

NOMINAL SIZESDN15 to DN150
PRESSURE RATINGSPN16 / PN25 / PN40, ANSI Class 150 / 300
TEMPERATURE RANGEUp to +250°C
CONNECTIONSDIN PN16-PN40 flanged, ANSI Class 150 / 300 flanged, BSP / NPT threaded
MATERIALSA216 WCB carbon steel / A351 CF3M stainless steel

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FAQs

The EFM1 reduces and stabilizes downstream pressure in steam, compressed air, neutral gas and liquid systems.
A self-operated pressure reducing valve uses process pressure itself and does not require an external control system. A pilot-operated valve uses a pilot stage to control the main valve and may suit different capacity or control requirements. The EFM1 is self-operated, so selection should consider inlet pressure, downstream pressure, flow and process conditions.
The published service scope includes steam, compressed air, neutral gases and liquids. Final compatibility depends on the materials, temperature and process conditions.
The EFM1 is available from DN15 to DN150.

ABOUT EFM1

The EFM1 is a self-operated, bellows-sealed pressure reducing valve for stable downstream pressure control in steam, compressed air, neutral gas and liquid systems. It uses process pressure and an adjustable spring and diaphragm system, without requiring an external actuator or control system.

Available from DN15 to DN150, the EFM1 can be supplied with DIN or ANSI flanged connections or BSP/NPT threaded ends. Published body materials are A216 WCB carbon steel and A351 CF3M stainless steel, with stainless steel trim as standard.

The valve provides quick response to changing demand and stable downstream regulation when correctly sized. For steam or fluids above 125°C, the published configuration requires a condensation tank to protect the pressure-control system. A control-line kit for external pressure tapping, reduced Kv/Cv trims, special trim materials and stainless steel actuator casing are available as options.

Final selection should be based on the fluid, inlet pressure, required downstream pressure, minimum and maximum flow, operating temperature, connection and pressure rating. A complete steam pressure reducing station should also consider filtration, pressure indication, isolation, condensate management and downstream overpressure protection.

Frequently Asked Questions

The EFM1 reduces and stabilizes downstream pressure in steam, compressed air, neutral gas and liquid systems.
A self-operated pressure reducing valve uses process pressure itself and does not require an external control system. A pilot-operated valve uses a pilot stage to control the main valve and may suit different capacity or control requirements. The EFM1 is self-operated, so selection should consider inlet pressure, downstream pressure, flow and process conditions.
The published service scope includes steam, compressed air, neutral gases and liquids. Final compatibility depends on the materials, temperature and process conditions.
The EFM1 is available from DN15 to DN150.
DIN or ANSI flanged connections and BSP or NPT threaded ends are available according to size and configuration.
Published body materials are A216 WCB carbon steel and A351 CF3M stainless steel. Stainless steel trim is standard.
The stainless steel bellows improves stem sealing reliability and helps protect against leakage in demanding service.
A condensation tank is available to protect the pressure-control system against excessive temperature. According to the EFM1 datasheet, it is required for steam or fluids above 125°C.
It reduces a higher steam supply pressure to the lower pressure required downstream. A typical arrangement can include filtration, upstream and downstream pressure indication, isolation, condensate management and downstream overpressure protection. The EFM1 datasheet shows filtration, pressure gauges and a downstream safety valve.
Depending on diaphragm and seal configuration, the EFM1 can operate up to approximately +250°C. A condensation tank is required for steam or fluids above 125°C.
Yes. Reduced Kv/Cv versions and alternative trim materials such as Monel are available on request.
Yes. Optional stainless steel actuator casing configurations are available depending on the application.
Yes. Replaceable internal components include seat and sealing elements.
Typical data include fluid, inlet pressure, required downstream pressure, maximum and minimum flow, operating temperature, connection size and standard, body material and steam conditions where applicable.
Yes. Published information describes quick response to demand and stable downstream pressure regulation under varying conditions. Actual performance depends on correct sizing and available inlet and downstream pressures.
Yes. A control line kit for pressure tapping is available as an option. Its applicability depends on the selected pressure range and configuration.
Yes. Inlet and outlet pressures, flow conditions, materials, connections, steam accessories, inspection and documentation requirements should be defined during the RFQ stage. Final sizing must be confirmed against actual process and project data.