Type 936 Threaded

> Safety valves made with brass inlets
> Enclosed discharge valve with threaded connections
> Metal-to-metal sealing

Product Description

Either Brass & Bronze or Brass & Stainless Steel Construction Direct Spring Loaded Enclosed Discharge Safety Valves for Cryogenic and Liquefied Gas Applications

Available with 10, 15, 20, or 25mm bore.


Example Applications:
  • Air/gas compressors
  • Pressure vessels
  • Medical gases/Technical gases
  • Thermal relief
  • Steam systems



View or Download Datasheet

Technical Information

Technical Information for Type 936 Threaded

  • Min. Pressure
    0.30 bar (4.35 psi)
  • Max. Pressure
    28.00 bar (406.00 psi)
  • Temperature Range
    -196°C to 250°C (subject to seal material)
  • Inlet Connection(s)
    1/2" to 2" BSP, BSPT or NPT
  • Outlet Connection(s)
    1" to 2" BSP
  • Flow Rate
    Refer to Flow Tables on the datasheet
  • Materials
    Brass & St. Steel
  • Seal MaterialsMetal to metal
    Viton® (FKM) / Nitrile (NBR) / Silicone / PTFE / EPDM
  • Test Certification
    Included - supplied Free of charge

Flow Rates:

See Datasheet



  • Relieving pressure is set pressure +10% (0.1 bar below 1.0 bar)
  • Reseating pressure is set pressure -10% (0.3 bar below 3.0 bar)
  • Stable operation on flows down to 50% of valve-rated capacity.
  • Leak Tightness to 90% set pressure to API 527 and in accordance with BS6759 part 3 1984, table 9 grade 2.
  • CP936 Materials meet the requirements of BAM (Germany) for Oxygen service



  • Designed in accordance with BS EN ISO-4126-1 & -7
  • PED 2014/68/EU (CE)
  • PE(S)R UK SI 2016 No. 1105 (UKCA)
  • EAC
  • Leak tightness at 90% set pressure to API 527 and in accordance with EN ISO 4126-1
  • Materials meet the requirements of BAM (Germany) for oxygen service


Unsung Guardians of the Flow

They lurk within pipes and vessels, silent sentinels watching for the silent threat of rising pressure. Safety relief valves aren’t flashy heroes, but their timely release of excess pressure prevents catastrophic bursts and equipment meltdowns. They’re the unsung guardians of the flow, ensuring your systems hum a smooth and uninterrupted tune.


View or Download the Type 936 Threaded Datasheet

Full Technical Information - Including Flow Rates

View or Download the Type 936 Threaded Datasheet

Seetru offers a wide range of downloadable datasheets for our products, including safety relief valves, liquid-level gauges, and sight glasses.  These datasheets provide detailed information on the technical specifications, features, and applications of Seetru products.  They are an essential resource for engineers, designers, and other professionals who need to select the right Seetru products for their specific needs.


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