Primary Pressure Regulating / Falling Water Preventing Valve, GD-20R Series

Primary Pressure Regulating / Falling Water Preventing Valve, GD-20R Series

[Features]
· Used for preventing fluids inside the pipes from draining when the pump stops in medium and high-rise building open-circuit systems.
· Used as a pump pressure-relief valve for eliminating pressure differences due to load fluctuations. Maintains a constant pressure inside the pipes while the pump is operating.
· The large pressure detection unit provides reliable response and cut-off performance against pressure changes.
· The GD-20RC has excellent corrosion resistance due to its nylon 11 coating on the inside and outside surfaces of the main body.

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Part Number

Configured Part Number is shown.

Part Number
GD-20R-FCD-15A
GD-20R-FCD-20A
GD-20R-FCD-25A
GD-20R-FCD-32A
GD-20R-FCD-40A
GD-20R-FCD-50A
GD-20R-FCD-65A
GD-20R-FCD-80A
GD-20R-FCD-100A
GD-20R-FCD-125A
GD-20R-FCD-150A
GD-20R-SCS-15A
GD-20R-SCS-20A
GD-20R-SCS-25A
GD-20R-SCS-32A
GD-20R-SCS-40A
GD-20R-SCS-50A
Part NumberVolume DiscountDays to ShipSupply Side, Nominal Designation of Pipe Flange Denomination B(Denomination A) Control Side Nominal The Pipe Flange B name(A name) Maximum Applicable Pressure Data Primary Pressure
(MPa)
Material (Valve Body / Valve Seat)
8 Day(s) or more 1/2B(15A)1/2B(15A)0.70.26~0.7Bronze
8 Day(s) or more 3/4B(20A)3/4B(20A)0.70.26~0.7Bronze
8 Day(s) or more 1B(25A)1B(25A)0.70.26~0.7Bronze
8 Day(s) or more 1 1/4B(32A)1 1/4B(32A)0.70.26~0.7Bronze
8 Day(s) or more 1 1/2B(40A)1 1/2B(40A)0.70.26~0.7Bronze
8 Day(s) or more 2B(50A)2B(50A)0.70.26~0.7Bronze
8 Day(s) or more 2 1/2B(65A)2 1/2B(65A)0.70.26~0.7Bronze
8 Day(s) or more 3B(80A)3B(80A)0.70.26~0.7Bronze
8 Day(s) or more 4B(100A)4B(100A)0.50.26~0.5Bronze
43 Day(s) or more 5B(125A)5B(125A)0.50.26~0.5Bronze
43 Day(s) or more 6B(150A)6B(150A)0.50.26~0.5Bronze
Quote 1/2B(15A)1/2B(15A)0.70.26~0.7Stainless Steel
Quote 3/4B(20A)3/4B(20A)0.70.26~0.7Stainless Steel
Quote 1B(25A)1B(25A)0.70.26~0.7Stainless Steel
Quote 1 1/4B(32A)1 1/4B(32A)0.70.26~0.7Stainless Steel
Quote 1 1/2B(40A)1 1/2B(40A)0.70.26~0.7Stainless Steel
Quote 2B(50A)2B(50A)0.70.26~0.7Stainless Steel

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Basic Information

Regulating Valve / Safety Valve Type Water falling prevention valve Applicable Fluid Water / Air / Oil Max. Applicable Pressure(MPa) 0.11~1
Max. Fluid Temperature(℃) 80 Body Material Spherical Graphite Cast Iron Connection Type Equal Dia. Connection
Supply Side, Flange Connection Types JIS 10K Flange Control Side, Flange Connection Type JIS 10K Flange

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