LNG

Female vent couplings for LNG tank pressure release

These female quick disconnect vent valves, also known as 'FQDV", are located on the dispensers at LNG re-fuelling stations and interlock easily with the male counterpart for fast and easy connecting and disconnecting of fuelling lines.

product image of a female qdv valve

Product description

These types of valves provide a cost-effective benefit where fuel lines are connected and disconnected more than once per week.

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Material

Housing: Stainless steel 316L
Seal retainer: Stainless steel 303
Seal ASSY: TFE/Viton
Seal: TFE
Poppet: Stainless steel 303
Seal poppet: PCTFE
Spring: Stainless steel 301/302

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Specifications

Gas types: LNG (Liquefied Natural Gas)
Connections: Thread
Type: 45˚ SAE (CGA440)
Internal pressure (during fueling): Max. 20.7 bar (300 psi)
System pressure (static): Max. 38 bar (550 psi)
Capacity
Fill breakaway: 189.27 lpm (50 gpm)
Vent breakaway: 37.8 lpm (10 gpm)
Temperature range: -212˚C to +65˚C (-350˚F to +150˚F) 
Sizes and range: 5/8"
Series available: LNG specific, VFL series
Standards: ATEX, CE, ISO 12617, ISO 16924

*Materials and specifications are subject to generalisation. Our experienced people are ready to help you find the correct fit for your application. 

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Features

  • 100% pressure tested
  • Handles LNG vent gas and liquid 
  • Dust cap provided
  • Durable and economical

Did you know?

There are over 100,000 FQDV's in service worldwide

FQDV's vary in handle type and stem length to meet preferential requirements or spatial limitations

Get in touch!

Whether you already know what you need, or you would like the opinion of an expert, we are always ready to help you out.