Consolidated Type 3900 MPV Modular Pilot-Operated Safety Relief Valve


The Type 3900 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. Highly versatile, this valve technology offers ease of maintenance, high reliability, flexibility, and efficient operation and performance.

Applicable Industries

Power Generation, Refining, Petrochemicals, Midstream Oil & Gas, Upstream Oil & Gas, Paper.

Key Applications :

Cooling Tower, Reactor Facility Grounds & BOP, Gas Turbine, Heat Recovery Steam Generator, Balance Of Plant, Distillation, Hydroprocessing, Reforming, Cracking, Secondary, Blending, Quenching & Fractioning, Charge Gas Compression, Seperation, Pipeline Integrity,Dehydration, Auxillary, Dehydration/Treating, Compression.


  • Inlet Sizes: 1" through 12"
  • Inlet Ratings: ASME Class 150 through 2500
  • Outlet Sizes:2" through 16"
  • Outlet Ratings:ASME Class 150 and 300
  • Orifice Sizes:D though T, Full Bores
  • Set Pressure Range:15 psig to 6250 psig
  • Temperature Range:-40°F to 505°F, above 505°F with heat exchanger
  • Materials:Stainless steel pilot with carbon steel main valve and stainless steel trim
  • Standards and Regulations: ASME B & PVC, Section I (Liquid)
    API 526


Consolidated 3900 POSRV Tech Spec (English)

Tech Spec/Fact Sheet English 5.66 MB

Consolidated 3900 MPV POSRV Manual (English)

Manuals English 6.67 MB

Consolidated 3900 MPV POSRV Fact Sheet (English)

Tech Spec/Fact Sheet English 229.73 KB

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