SAFETY RELIEF VALVE SERIES 42

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SAFETY RELIEF VALVE SERIES 42

Safety Relief Valve is a valve that acts as a fail safe. It automatical releases a substance from a Boiler, Pressure vessel or other systems, when maximum allowable pressure exceeds preset set pressure limit. It had wide Application of water, air gases, steam, any other gases and liquid. Internal set value adjuster is connected to the set pressure spring and guided to the plug which lifts when the inlet pressure exceeds preset set value adjuster limits.
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DESIGN STANDARD 1 . F low Sizing – API RP 520. 2. Flange – ASME B16.34 3. Orifice – API 526 4. Testing – API 527 Seat Tightness 5. Inspection – API 576
INLET VALVE SIZE 15 to 40 mm (1/2″ to 1-1/2″) Other sizes on demand available. Outlet Size As Per Table
RATING ANSI 150 # TO 600#
TEMPERATURE -40°C to 400°C
END CONNECTION NPT, BSP, Socket Weld, Butt Weld
BODY MATERIAL WCC, CF8, CF8M ,CF3, CF3M Other available on request
BONNET Screw to Body Type
GASKET CAF 154 Metallic,Grafoil / PTFE
TRIM MATERIAL S.S.304, S.S.316, S.S.304L, S.S.316L Other available on request
SEAT LEAKAGE As Per API 527
  • % Regulation applicable from 10% to 20% overpressure depending on configuration with respect to API 520.
  • Discharge Capacity of safety relief valve as per API 520 Part I.
  • Seat tightness confirms to API RP 527.
  • Characteristics graph of maximum allowable pressure and vs valve lift showing below.
  • Protection of Chemical Processes and equipment
  • Pharma and Boilers sector
  • Process industries and pumps
  • Low & Medium Pressure Stem
  • Corrosive Application