Spence Engineering Cast Steel E Main Valve, 300# NPT. 3/8" E-S1B9A1, 1/2" E-S1C9A1, 3/4" E-S1D9A1, 1" E-S1E9A1, 1-1/4" E-S1F9A1, 1-1/2" E-S1G9A1, 2" E-S1H9A1.

Spence Engineering E Main Valve, Cast Steel 300# NPT

  • $3,376.00
    Unit price per 


The original workhorse for steam pressure regulating applications, the Spence E Main Valve full port regulating valve has hundreds of possible applications with the variety of pilot pairings for your steam regulating management needs. Packless construction and rated to ANSI/FCI 70-2 Class IV shutoff, the Spence E Main Valve offers frictionless operation for longevity of installed life. 

  • Available in sizes 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
  • Minimum inlet pressure of 15 PSI
  • Minimum pressure differential of 10 PSI
  • Full port valve designed for maximum flow capacities
  • Normally closed design with .01% steam leakage of valve related capacity
  • Capable of pairing with the industries largest variety of pilot operators; hardware kits sold separately!
  • Spence Cast Steel 300# NPT E Main Steam Pressure Regulating Valve Specifications



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