Consolidated Type 4900 MPV Modular Pilot-Operated Safety Relief Valve


The Type 4900 modular pilot-operated safety relief valve (MPV) features a separate, non-flowing pilot sub-assembly design making it well-suitable for use with both compressible and incompressible fluids. Optional pilot valve constructions offer either pop action or modulating action functionality to meet various pressure range, seat tightness, and blowdown requirements. Key features and benefits of the 4900 Pilot Operated Safety Relief Valve include:

  • Modular design is easy to install, operate, and maintain.
  • Tubing and fittings are eliminated for simple assembly and disassembly, in addition to fewer leak paths.
  • Streamlined design addresses issues of tubing damage potentially caused by harsh environments and rough use
  • Top-entry design offers easy access to the main valve components for reduced maintenance and operating costs
  • Applicable Industries

    Power Generation

    Key Applications :

    Heat Recovery Steam Generator, Economizer (Steam and Liquid)


    • Inlet Sizes: 1" to 8" flanged
    • Inlet Ratings: ASME Class 150 to 2500
    • Outlet Sizes:2" through 10" flanged
    • Outlet Ratings:ASME Class 150 to 300
    • Orifice Sizes:D through T, Full Bores
    • Set Pressure Range:15 psig to 7200 psig
    • Temperature Range:-40°F to 505°F
    • Materials:Stainless steel pilot with carbon steel main valve and stainless steel trim. Other materials available
    • Standards and Regulations: ASME B and PVC, Section VIII Pressure Equipment Directive


    Consolidated 4900 MPV POSRV Manual (English)

    Manuals English 11.93 MB

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