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OPW L Series NGV1-certified refueling receptacles are designed for use on medium storage natural gas vehicles, including automobiles, light trucks, shuttle buses and vans.


  • Body: stainless steel
  • Internal Parts: stainless steel and brass
  • Seals: specially formulated polymers and elastomers specific to high pressure NGV applications

Features & Benefits

  • Durable, Corrosion-Resistant Construction All OPW receptacles are made from stainless steel.
  • Non-Contact Check Valve Each OPW NGV receptacle contains a highly reliable non-contact check valve that opens only when differential pressure is present during fueling.
  • Unique Sealing System The sealing system in all OPW receptacles consists of a stainless steel poppet that aligns with a rearward facing, captured seal located in the receptacle body. This arrangement prevents: seal “wash-out” during high-flow conditions and “cratering” due to debris. The seal material has exceptionally long service life, resists creep and deformation and has exceptional wear resistance under all operating pressure and temperature conditions. The poppet is treated, impact-resistant stainless steel with a polished surface to provide reliable sealing at low back pressures.
  • High-Flow Capacity The L Series receptacles have much larger flow capacity than conventional receptacles. The flow path allows very high flows, combined with low pressure drop and enhanced resistance to hydrate formation.
  • Bulkhead or Straight Thread The L Series allows the user to order a complete receptacle or buy and assemble their own adaptor shaft. They come with and without bulkhead fitting and with or without filter. The external bulkhead nut costs less than conventional stainless steel fittings. L Series receptacles can be used with parallel thread or compression tube fittings. L Series bodies come with either wrench flats or hex to ease vehicular mounting.
  • Filtered Receptacle (LE) Filters capture dirt and gas-borne debris commonly found in CNG systems. Filtered receptacles protect the receptacle seals and the vehicle fuel system. A 50-micron filter is incorporated ahead of the receptacle check valve.


Technical Specs

Item Fill Receptacles / NGV1 Type 1
Manufacturer OPW
Body MaterialStainless steel
Internal Parts MaterialStainless Steel and Brass
Minimum Flow Rate:1,500 SCFM @ 3,000 psid
Temperature Range:-40° F to 250° F (-40° C to 120° C)
Weight:2.94 lbs. (1.33 kg.)
Cv:LD=0.85 LE=0.83
Design Pressure:5,000 psi (345 bar)

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