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Flowstar - Relief valve, NABIC Fig 500T Combined Pressure & Temperature Relief Valve

Flowstar - Relief valve, NABIC Fig 500T Combined Pressure & Temperature Relief Valve

Brand: Flowstar
Model No: NABIC Fig 500T
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Features & Benefits

The NABIC Fig 500T provides protection against excess temperature as well as pressure protection. It automatically discharges hot water to prevent a predetermined set pressure and/or temperature being exceeded. Each of the lift mechanisms is independent of each other. Designed and tested to BS EN 4126, BS 6283 (when 50% of BS EN ISO 4126 -1 ratings at 1 bar or temperature ratings are used). WRAS approved (1 bar and above).

  • Size Range: DN15 - DN50
  • Resilient Viton soft seat design
  • Powerful thermostat
  • Pressure setting locked and sealed
  • Drain plug fitted on DN32 and above

 

Summary

Sizes3/4" (DN15), 1" (DN20), 1.1/4" (DN25), 1.1/2" (DN32), 2" (DN40), 2.1/2" (DN50)
ConnectionsMale BSP Inlet x Female BSP Outlet
MaterialsGunmetal Body
DiskViton
Joints & SealsDiaphragm: Silicon Rubber
MediumHot water
Set Pressure1.0 to 12.5 Barg (DN15 to DN20), 0.4 to 12.5 Barg (DN25 to DN50)
Temperature95 degC
DesignDesigned and tested to BS6759
Notes(a) The valve begins to lift at 75 degC due to the temperature probe (b) Diaphragm protected working parts (c) On the 500T, the DN size on the valve body does not match the valve connection size.