Type 980 Threaded

> Safety valves with bronze body
> Enclosed discharge valve with threaded connections

Product Description

Type 980 Threaded

Direct Spring Loaded Enclosed Discharge safety valve for Liquids – Metal seal.
Available with 10, 15, 20 & 25mm bore



Stainless steel with AISI 440B Disc


Example Applications:
  • Pumping systems and Hydraulic systems
  • Thermal relief
  • Waste water management
  • Oil transfer
  • Petrochemical industries
  • Fire fighting equipment
  • Water cooling and feeding systems
  • Chemical process



View or Download Datasheet

Technical Information

Technical Information for Type 980 Threaded

  • Min. Pressure
    0.30 bar g. (4.35 psi)
  • Max. Pressure
    36.00 bar (522.00 psi)
  • Temperature Range
    -50°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
    St. Steel
  • Seal Materials
    Viton® / Nitrile / Silicone / EPDM
  • Test Certification
    Included - supplied Free of charge
Flow Rates:

See datasheet


  • Relieving pressure is set pressure +10%
  • Reseating pressure is set pressure -20% (0.6 bar below 3.0 bar)
  • Leak Tightness to 90% set pressure to API 527 and in accordance with EN ISO 4126-1.


  • 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


Simple Functionality, Profound Impact

Despite their basic operating principles, these valves play a crucial role in various industrial processes, with their impact on safety and reliability being significant.


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