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 Supplier Information:
 Supplier 2G Products, FZC
   
 Description:
Seawater Service Pressure Relief Valve Model 50A-20, UL Listed, Angle pattern, Factory mutual approved, Fast opening to maintain steady line pressure, Accommodates wide range of flow rate, Closes gradually for surge-free operation, Adjustable pressure settings, Not affected by pressure at valve discharge. This valve is designed specially to automatically relieve excess pressure in fire protection pumping systems. Pilot controlled, it maintains constant system pressure at pump discharge within very close limits at demands change. STANDARD MATERIALS: Body & Cover: Ductile iron ASTM A-536, Trim: ASTM B61 Bronze seat - Monel trim, Pilot control system: Cast bronze with monel trim and SS-316 tubing and fittings Other optional materials are available upon request. END DETAILS: 150 and 300 ANSI B16.42 PRESSURE RATINGS: 150 class 250 psi max. OR 300 class 400 psi max, TEMPERATURE: Water to 180 deg F max. ADJUSTMENT RANGE: 20-200 psi (150 class) OR 100-300 psi (300 class)

Fire certified valves: Seawater Pressure Relief Valve, UL- FM

Size - Approval Max Cont./Surge Product # Price
   DN 040 - 1 1/2"
125 / 280 GPM
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   DN 050 - 2"
208 / 470 GPM
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   DN 065 - 2 1/2"
300 / 670 GPM
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   DN 080 - 3" - UL/FM
460 / 1000 GPM
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   DN 100 - 4" - UL/FM
800 / 1800 GPM
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   DN 150 - 6" - UL/FM
1800 / 4000 GPM
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   DN 200 - 8" - UL/FM
3100 / 7000 GPM
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   DN 250 - 10"
4900 / 11000 GPM
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   DN 300 - 12"
7000 / 16000 GPM
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   DN 350 - 14"
8500 / 19000 GPM
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   DN 400 - 16"
11000 / 25000 GPM
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   DN 600 - 24"
28000 / 63000 GPM
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