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All Categories > Regulators (Water, Steam, Air) > Main Valves > Type E Main Valve  

Type E Main Valve

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  • Normally Closed
  • Single Seat
  • Balanced Metal Diaphragms
  • Protected Main Spring
  • Fluid, Gas & Vapor Applications
  • Multiple Trims for Precise Sizing
  • ANSI/FCI 70-2 Class IV Shutoff
  • FCI 70-3 Class VI Shutoff
  • Virtually Frictionless for Long Service Life
  • Packless Construction
  • Easy In-line Maintenance
  • Wide Variety of Pilots for Many Applications
  • Minimum Operating ΔP 10 psi (0.7 bar)
  • Lifetime Warranty against Wire drawing of Seat & Disc (When installed according to factory specifications.)
Application Data
  • Pressure Regulating for Steam Distribution
  • Regulating for Process Control (Temperature or Pressure)
  • Maintain Back Pressure or Differential Pressure
  • For use with Self-contained, Pneumatic or Electronic Pilots
  • Single Point or Multiple Use Applications
  • Slow Start-up or Shutdown
Typical Configurations
  • Pressure Reducing - Type ED Series
  • Air Adjusted - Type EA Series
  • Back Pressure - Type EQ Series
  • Pump Governor - Type EP Series
  • Load Allocating - Type EFD
  • Air Controlled - Type EAP60
  • Electronic Slow Start - Type ED208D
  • Solenoid Controlled - Type EMD
  • Solenoid Actuated - Type EM
  • Differential - Type EN
  • Temperature Control - Type ET Series

The valve shall be self-operated, external pilot type, single seated, metal diaphragm actuated, normally closed design. The valve will function quickly and shut tight on dead end service. Internal parts including seats, discs, stems and diaphragms shall be of stainless steel. There shall be no springs in the steam space and no stuffing box. The valve shall be easy to maintain with all parts accessible without removal from the line.



3/8 to 12 in

Pressure at 750ºF

600 psig

Body Material

Cast Iron - ASTM A126 Cl. B
Cast Steel - ASTM A216 WCB

Stem Material

303 Stainless Steel ASTM A582

Disc Material

3/4 - 5" - 420 Stainless Steel ASTM A743 CA-40
6 - 12" - 304 Stainless Steel ASTM A167/A240

Seat Material

3/4 - 5" - 420 Stainless Steel ASTM A743 CA-40
6 - 12" - 316 Stainless Steel ASTM A743-79 CF-8M

Gasket Material


Diaphragm Material

Stainless Steel MIL-S-5059C

Spring Material



Composition Disc
Balanced Construction

Insulcap Insulating Jacket

High Temperature Construction

Parabolic Disc

Integral Mount Pilot



EZ Connections

Low ΔP (LP) Main Spring


·  Dimensions & Weight (Type E Main Valve)

·  Valve Rating

·  Rated Flow Coefficients


Main Valve Options
(PDF, 192KB)

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