EXCESS FLOW SHUTDOWN
The Hydrocore Excess Flow Shutdown Valve is used for pipeline safety isolation, when excess flow occurs.
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.
Does not need an expensive actuator to operate
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.
No pneumatic systems.
Superior flow coefficient (Cv/Kv)
Can be maintained in line
High cavitation resistance due to design
Stainless steel moving internals parts
Cast steel body
Low pressure drop across valve
Flanges and face-to-face dimensions to customer specification
FLOW COEFFICIENTS & FLOW RATES
160 bar (max) working pressure
Up to 85ºC with standard seals.
Liquid and gas with low content of suspended solids.
2” (50 NB) to 16” (400 NB)
SABS 1123, BS4504, BS10, ASME B16.34, ANSI B16.5
pH levels & chlorides
Parts of the valve are made from stainless steel and can withstand a low level of chlorides.
The valve can be installed in any position
Seat Leakage - B16.104 class III, IV, V or VI, depends on valve type and application.
Cv/Kv: 525 | Flow (max): 117 ℓ/sec | ΔP: 12.5 psi
Cv/Kv: 1086 | Flow (max): 152 ℓ/sec | ΔP: 1.4 psi
Cv/Kv: 1433 | Flow (max): 233 ℓ/sec | ΔP: 6.7 psi
Cv/Kv: 1936 | Flow (max): 337 ℓ/sec | ΔP: 7.9 psi
DIMENSIONS AND WEIGHTS
559mm / 229kg
660mm / 405kg
787mm / 744kg
838mm / 1052kg
59mm / 245kg
660mm / 429kg
787mm / 778kg
838mm / 1098kg
559mm / 270kg
660mm / 460kg
787mm / 840kg
838mm / 1164kg
610mm / 297kg
737mm / 509kg
838mm / 891kg
965mm / 1277kg
705mm / TBD
832mm / TBD
991mm / TBD
1130mm / TBD