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

 

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

 

Approvals:
  • Designed in accordance with BS EN ISO-4126-1 & -7
  • PED 2014/68/EU (CE)
  • PE(S)R UK SI 2016 No. 1105 (UKCA)

 

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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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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