ACME tank couplings for NH3

ACME Tank couplings like "Filler Valves" and vapour equalisation valves are frequently used in hose operated LPG transfers and provide fast filling for mobile tanks and above or underground stationary ones.

Product description

ACME tank couplings are male threaded devices that are installed onto tanks to facilitate a secure one directional flow of media during filling and prevent gasses from exiting unintentionally by the incorporation of a back-flow configuration.

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Body: Steel, brass
Springs: Stainless steel (filler valve)
Washer and seat discs: Synthetic rubber (filler valve)
Cap: Resilient molded plastic (filler valve) 

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Gas types: LPG (Propane, Butane), NH3 (Ammonia, Anhydrous ammonia)
Connections: Thread
Type: NPT
Pressure range: Up to 25 bar (362.5 psi)
Sizes and ranges:
Male ACME: 1-1/4" to 3-1/4"
Container connection: 3/4" to 3"
Series available: L7579, L6579, 7500, SFL7579V, SF7647V, 6587EC, 3197C, 7573, 3183AC, 5769, 6588LE and 6589LE
Standards: UL listed, PED, TPED 

*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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  • Filler cap made of resilient molded plastic to contain the large pressure and protect from water and debris entering the tank
  • Long-wearing gasket permits hand-tight connection
  • Safety groove is designed to sheer below ACME thread, leaving the seat assembly intact and unaffected in the case of pull-away
  • Seat disc is made in an extra thick synthetic rubber to extend the life span
  • Precision machined guide to assure a positive seal that meets the NFPA 58 requirements for liquid transfer
  • Double-check valves provides added system protection
  • Specify vapour equalizing valves on all original tanks purchases to ensure quality and dependable performance
  • Bi-directional flow couplings can be delivered on request
  • Integrated systems with MESH screens and safety relief valves are available

Did you know?

7500 series: low emission filler valve with manual shut-off

SFL7579V & SF7647V series: low emission filler & overfill protection device

If vapour equalisation is necessary, a double-check vapour equalisation valve is installed, instead which has an added 'nose' that opens the check valve and allows the equalisation of pressure in the supply and storage container 

Alternative products

  • A dry coupling with orange handle

    Dry couplings

    Dry couplings provide a greater degree of control over hazardous vapours and liquids. This ensures risk-free handling for people and protects properties from contamination.

    See our Dry couplings

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