Type 670 / 690

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

Product Description

Type 670 / 690

Enclosed Discharge Safety Relief Valves for Liquids, available with 10, 13, 18, 20, or 25mm nominal bore.

Bronze body with either brass or stainless steel inlet.


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



View or Download Datasheet

Technical Information

Technical Information for Type 670 / 690

  • Min. Pressure
    0.70 bar (10.15 psi)
  • Max. Pressure
    30.00 bar (435.00 psi)
  • Temperature Range
    -40°C to 200°C (subject to seal material)
  • Inlet Connection(s)
    3/8" to 2" BSP, BSPT orNPT
  • Outlet Connection(s)
    2 BSP or NPT
  • Flow Rate
    Refer to Flow Tables on the datasheet
  • Materials
    Bronze & Brass or Bronze & St. Steel or St. Steel
  • Seal Materials
    Viton® / Nitrile / Neoprene / Ethylene Propylene
  • Test Certification
    Included - supplied Free of charge
Flow Rates:

See datasheet


  • Relieving pressure is set pressure +25%
  • Reseating pressure is set pressure -20% (0.6 bar below 3.0 bar)


  • 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


Pressure Guardians

Pressure relief valves stand sentinel in diverse systems, automatically releasing excess pressure and preventing equipment damage. Essential safety measures for various industries and applications.


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