Multiport / Quad-Port Pressure Relief Valve (PRV) Manifold For LPG Tanks

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APPLICATION:

Designed for use with large LP-Gas and NH stationary storage containers with flanged openings.  These relief manifolds have an additional relief valve excluded from the flow rating, which allows for service and/or exchange of any one relief valve without evacuating the tank. Our large port selection handle allows for each specific valve port to be closed off so that the relief valve may be removed while the remaining valves remain under pressure protecting the tank and contents. Each manifold model is rated based on the flow through the relief valves with one valve removed from service.

FEATURES:

  • Heavy duty ductile iron body
  • Durable V-cup PTFE packing stem seals
  • Molded rubber weather guard for manifold rotary gear with port plug
  • Integral breakaway feature leaves seat and seal intact
  • Weep hole deflector and hex socket plugs supplied
  • Integrated pilot equalizing feature
  • Corrosion resistant finish
  • Convenient lifting chain included
  • 3-1/2”-8 outlet thread accepts 3” MNPT pipeaway
MEP990-4DFM/3DFM
Flange Reducing
Spool Adapter
    Part No.    Flange Size  No. of Relief Valves    Application  Flow Capacity SCFM/Air (2) UL @ 120% Set Pressure Seal Material
ME903S-3F/250VM3” – 300#(1)3LPG20,400 (2)FKM
ME903S-3F/250CN3” – 300#(1)3LPG & NH 320,400 (2)Nitrile
ME903S-4F/250VM4” – 300#3LPG20,400 (2)FKM
ME903S-4F/250CN4” – 300#3LPG & NH 320,400 (2)Nitrile
ME904S-3F/250VM3” – 300#(1)4LPG27,740 (3)FKM
ME904S-3F/250CN3” – 300#(1)4LPG & NH 327,740 (3)Nitrile
ME904S-4F/250VM4” – 300#4LPG27,740 (3)FKM
ME904S-4F/250CN4” – 300#4LPG & NH 327,740 (3)Nitrile
ME903S-3F/265VM3” – 300#(1)3LPG20,555 (2)FKM
ME903S-3F/265CN3” – 300#(1)3LPG & NH 320,555 (2)Nitrile
ME903S-4F/265VM4” – 300#3LPG20,555 (2)FKM
ME903S-4F/265CN4” – 300#3LPG & NH 320,555 (2)Nitrile
ME904S-3F/265VM3” – 300#(1)4LPG28,550 (3)FKM
ME904S-3F/265CN3” – 300#(1)4LPG & NH 328,550 (3)Nitrile
ME904S-4F/265VM4” – 300#4LPG28,550 (3)FKM
ME904S-4F/265CN4” – 300#4LPG & NH 328,550 (3)Nitrile
(1)  For use with modified 300 # ANSI Flange with 4” port
(2) Flow rating based on number of valves indicated in parenthesis ( ) Flow rates are shown as bare relief valves, pipe aways will reduce flow
(3) Nitrile not UL Listed

Accessories

Part No.Description
MEP990-4DFM/3DFM4”-300 LB X 3”-300 LB Flanged ACF/ESV/ISC Adapting Spool Kit

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