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Ductile Iron Knife Gate Valve- GCU73X Knife Gate Valves
The knife gate valve is a bi-directional wafer valve for general industrial application. 
The nominal diameter available range from DN50 to DN800 with Lugged flange connections complying with EN 1092-2 PN10/PN16 or alternatively, ANSI B16.5. 
The knife gate valve is predominantly used in chemical and mining industries as well as sewage  treatment or water plants. Long life and low life-cycle cost. This type of valve is a result of a long-term and customer oriented product development.
Product Benefits:
Knife gate valve is zero leakage, withstanding high differential pressure and full bore valve with minimal seat cavity for maximun flow capactiy;
The integrated body structure with precision casting
No groove is designed on the valve seat, which prevents accumulating media on the sealing surface and thus avoids sealing surface leakage or disc blockage caused by media accumulation.
Economy and flexibility is achieved by the complete standard design of the valve, which enables quickly to replace the actuator.
Testing
Testing includes a body shell test, a seat test and a cycling test to insure proper functioning of moving parts.
• Standard Shell test: Hydro test at 1.5 times the rated CWP (cold working pressure) – Zero allowable leakage
• Standard Resilient Seat test: Hydro test at 15 psi (1 bar) and rated CWP
Max. operating pressures ( CWP ) for GAOCHUANG type GCU73X Knife Gate Valves: 
DN050-DN250:  10 bar
DN300-DN400:   6 bar
DN450:         5 bar
DN500-DN600:   4 bar
DN700-DN1200:  2 bar
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Product introduction
Ductile Iron Knife Gate Valve- GCU73X Knife Gate Valves
The knife gate valve is a bi-directional wafer valve for general industrial application. 
The nominal diameter available range from DN50 to DN800 with Lugged flange connections complying with EN 1092-2 PN10/PN16 or alternatively, ANSI B16.5. 
The knife gate valve is predominantly used in chemical and mining industries as well as sewage  treatment or water plants. Long life and low life-cycle cost. This type of valve is a result of a long-term and customer oriented product development.
Product Benefits:
Knife gate valve is zero leakage, withstanding high differential pressure and full bore valve with minimal seat cavity for maximun flow capactiy;
The integrated body structure with precision casting
No groove is designed on the valve seat, which prevents accumulating media on the sealing surface and thus avoids sealing surface leakage or disc blockage caused by media accumulation.
Economy and flexibility is achieved by the complete standard design of the valve, which enables quickly to replace the actuator.
Testing
Testing includes a body shell test, a seat test and a cycling test to insure proper functioning of moving parts.
• Standard Shell test: Hydro test at 1.5 times the rated CWP (cold working pressure) – Zero allowable leakage
• Standard Resilient Seat test: Hydro test at 15 psi (1 bar) and rated CWP
Max. operating pressures ( CWP ) for GAOCHUANG type GCU73X Knife Gate Valves: 
DN050-DN250:  10 bar
DN300-DN400:   6 bar
DN450:         5 bar
DN500-DN600:   4 bar
DN700-DN1200:  2 bar
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