EXCESS FLOW SHUTDOWN
VALVE
The Hydrocore Excess Flow Shutdown Valve is used for pipeline safety isolation, when excess flow occurs.
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Principals of Operation
The Hydrocore™ excess flow shutdown valve closes when a preset differential pressure ∆P=Pu-Pd exists across the valve. The valve is powered by the line-fluid pressure with no need for external actuators, pilots, instruments or an external power source.


FEATURES
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Does not need an expensive actuator to operate
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Does not need a gears, spindle, bushes, shafts, keys and keyways that can wear out and cause the limit switch to go out or cause the actuator to fail.
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​No pneumatic systems.
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Superior flow coefficient (Cv/Kv)
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Can be maintained in line
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High cavitation resistance due to design
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Stainless steel moving internals parts
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Cast steel body
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Low pressure drop across valve
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Flanges and face-to-face dimensions to customer specification
SPECIFICATIONS
FLOW COEFFICIENTS & FLOW RATES
Pressure rating
160 bar (max) working pressure
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Temperature rating
Up to 85ºC with standard seals.
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Media
Liquid and gas with low content of suspended solids.
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Pipe sizes
2” (50 NB) to 16” (400 NB)
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Flanges
SABS 1123, BS4504, BS10, ASME B16.34, ANSI B16.5
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pH levels & chlorides
Parts of the valve are made from stainless steel and can withstand a low level of chlorides.
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Installation position
The valve can be installed in any position
Seating
Seat Leakage - B16.104 class III, IV, V or VI, depends on valve type and application.
150 NB
Cv/Kv: 525 | Flow (max): 117 â„“/sec | ΔP: 12.5 psi
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200 NB
Cv/Kv: 1086 | Flow (max): 152 â„“/sec | ΔP: 1.4 psi
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250 NB
Cv/Kv: 1433 | Flow (max): 233 â„“/sec | ΔP: 6.7 psi
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300 NB
Cv/Kv: 1936 | Flow (max): 337 â„“/sec | ΔP: 7.9 psi
DIMENSIONS AND WEIGHTS

SIZE
150 NB
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200 NB
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250 NB
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300 NB
A (mm)
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381
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494
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573
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652
B (mm)
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381
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480
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573
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645
C (mm)
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711
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913
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1059
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1198
#150 F-T-F
559mm / 229kg
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660mm / 405kg
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787mm / 744kg
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838mm / 1052kg
#300 F-T-F
59mm / 245kg
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660mm / 429kg
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787mm / 778kg
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838mm / 1098kg
#600 F-T-F
559mm / 270kg
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660mm / 460kg
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787mm / 840kg
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838mm / 1164kg
#900 F-T-F
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610mm / 297kg
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737mm / 509kg
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838mm / 891kg
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965mm / 1277kg
#1500 F-T-F
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705mm / TBD
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832mm / TBD
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991mm / TBD
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1130mm / TBD