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Pilot Operated Safety Valve

Flow-Tek FT 620 series PILOT OPERATED pressure relief valve has been engineered to providing high quality cover pressure protection for Air, Gas, Vapors, Liquid and two phase application in an exceptionally rugged standardized design to the process and power industries.

  • Description

All valve casting and forging are manufactured to ASME/ASTM standard material specification. These are available in WCB/WC6/WCC/WC9/CF8/CF8M/CA15/Hastalloy-C/NACE MR0175 etc.

High pressure valves will have Inconel Disc. And SS347H-Nozzle. Standard valves have SS316 Nozzle and Disc.

Technical Specification

Nominal Diameter at Inlet DN 25 - DN 200 | 1" - 8"
Orifice 1 D 2 to 8 T+ 10 | 1 D 2 to 8 T+ 10
Actual Orifice Diameter d0 11 mm - 180 mm | 0.433 in - 7.087 in
Actual Orifice Area A0 95 mm2 - 25,446.9 mm2 | 0,147 in2 - 39.443 in2
Pressure 2,5 bar - 256 bar | 36 psig - 3,705 psig
Temperature (iaw DIN EN) -45 °C to 200 °C | -49°F to 392°F
Body Material 1.0619, 1.4408 | SA 352 LCB, SA 216 WCB, SA 351 CF8M
Body Material Valve Connection
Valve Connection Flange in accordance with DIN EN 1092, ASME B 16.5 or JIS 2220
Load Type Medium Controlled

Applicable Standard

  • Design Standard : API-520 , API-521, API-526, API-527, ASME SEC-VIII
  • End Connection : Flanged End to suit ANSI / DIN / BS / JIS / IS etc.
  • Testing Standard : API 527

Features

  • Pilot Operated Safety Valve:
  • Piping between the pilot and main valves is integrated into the cover to prevent damage and freezing
  • Integrated Backflow Preventer as standard part
  • Four week delivery time from the factory
  • Higher capacity than comparable size with extra orifices
  • 20% less installation space than competitors' comparable models
  • Supplementary Loading System:
  • Higher operating pressures are possible
  • Closing pressure difference of up to -3 %; opening process is independent of back pressure
  • Functional test and valve adjustment possible during operation
  • Max. 0.1 sec. for valve to open completely

Applications

  • Oil and Gas Industry
  • Chemical Industry
  • Petrochemical Industry
  • Power
  • Technical Gases