skip to navigation
Luxfer neck block
Luxfer neck block
Luxfer plug
Luxfer plug
Luxfer mounting strap
Luxfer mounting strap
Luxfer end plug
Luxfer end plug
Luxfer neck block
Luxfer neck block
Luxfer PRD
Luxfer PRD
Luxfer PRD
Luxfer PRD

Luxfer AF accessories

In addition to cylinders, Luxfer offers a superior line of PRDs (pressure-relief devices) and complete cylinder kits for AF applications—available exclusively with Luxfer composite AF cylinders. Our high-flow PRDs allow faster release in case of emergencies.

Categories: Alternative fuel


Models PRD-208 (200 bar), PRD-258 (250 bar), PRD-358 (350 bar), PRD-458 (450 bar) and PRD-758 (700 bar)

Key features and benefits:

  • Outstanding flow and burst ratings: capable of venting a 500-liter cylinder @ 300 bar in under 90 seconds.
    • Ø6.35 orifice: 90 scfm1 / 20,000 psi (1380 bar).
    • Ø4.75 orifice: 50 scfm1 / 35,700 psi (2462 bar).
    • Ø4.00 orifice: 36 scfm1 / 50,400 psi (3475 bar).
  • Glass bulb thermal pressure-relief technology.
  • Suitable for CNG and hydrogen; pressure ratings up to 700 bar.
  • The lightest-weight, most compact PRD product available: achieved by using a 6061-T6 aluminum alloy body. Up to 72% lighter than similar products on the market.

Additional features and benefits:

  • Direct and plumbed vent line options.
  • Great fit with Luxfer QTVs (quarter-turn valves) and OTVs (one-turn valves).
  • High abuse tolerance: >200 N.m.
  • Suitable for 5052-0 aluminum vent tubing (12 mm or ½-inch OD).
  • Takes ¾”-16 vent fittings (tubing nut).
  • Patent pending.

For remote PRD:

  • Style AF: -4 or -6 face seal tubing format.
  • Style AC: -4 or -6 compression tube fitting.

End-plug PRD

Features and benefits:

  • Extremely lightweight products achieved by using 6061-T6 aluminum alloy body (only 0.23 pounds).
  • Very low profile to maximize space (0.51 inches).
  • Available as axial and radial end plugs.
  • Very low leakage (-50C O-rings).

End plug

Features and benefits:

  • Lightweight 6061-T6 aluminum design.
  • Low profile.
  • Very low leakage (-50C O-rings).

Neck block mounts

For G-Stor Pro (Type 3) and GEN2 G-Stor Go (Type 4) cylinders

Various mounting methods may be used with Luxfer cylinders. The mounting method and appropriate mounting hardware are often specified by the fuel-system manufacturer and may be supplied by Luxfer. Refer to applicable instructions and specifications provided by the fuel-system manufacturer or cylinder manufacturer before attempting to mount cylinders. 

Luxfer’s 6061-T6 aluminum alloy neck-mount blocks are designed to allow cylinders to expand horizontally while being filled to full pressure.

Features and benefits:

  • Lightweight and corrosion-resistant.
  • Allows for cylinder expansion under high pressure.
  • Easy to install.

Strap mounts

For GEN2 G-Stor Go (Type 4) cylinders

These carbon steel brackets were specially designed for Luxfer GEN2 G-Stor Go cylinders to avoid product damage as cylinders expand while being filled to full pressure.

Features and benefits:

  • Strong carbon steel material coated for corrosion protection.
  • Specially designed for GEN2 G-Stor Go 22-inch product range to allow for cylinder expansion without compromising cylinder integrity.
  • Easy to install.
  • Designed and manufactured to meet NFPA 52 G-loading requirements.

Related articles

  • Luxfer Gas Cylinders is…

    December 08, 2017 /

    Luxfer Gas Cylinders is pleased to announce that Tadeu Margaria has joined Luxfer Gas Cylinders as Sales Representative for Central and South America.

  • Luxfer Gas Cylinders position…

    June 07, 2017 / SCBA and life support

    Luxfer Gas Cylinders position concerning life extension of DOT-CFFC carbon composite cylinders by means of Modal Acoustic Emission (MAE) requalification

Related support

Related events

Print Spec Sheets

Technical specifications (Metric)


Technical specifications (Imperial)


Product video