High Pressure Shut-off Valve

Basic information of High Pressure Shut-off Valve

This valve is closed after the fire pump is started to cut off the domestic water and ensure the firefighting water. When the fire pump is closed, the valve automatically opens to cut off the firefighting water and restore the domestic water supply system. Dof960 series of cases

Features of High Pressure Shut-off Valve

1. 2. Sensitive induction, quick control3. Completely Automatic Operation4. Save on plumbing and water costs

Principle of High Pressure Shut-off Valve

The pilot valve is opened when the inlet pressure of the main valve is lower than the set pressure of the pilot valve. The main valve opens and water flows out through the main valve through the outlet. When the firefighting pump starts or frequency conversion pump pressure increases, exceeding the set pressure of the pilot valve, the pressure of the main valve inlet guide valve is increased, the pressure acting on the spring is increased, the pressure is pressed down, the pilot valve is closed. At this point, the inlet pressure of the main valve is continuously supplemented to the control room of the main valve through the ball valve. The downward pressure on the valve disc is greater than the upward thrust to close the main valve.

Installation and Commissioning of High Pressure Shut-off Valve

Piping should be cleaned before using. When the inlet pressure is less than the set pressure, the valve is always open, if the inlet pressure is greater than the set pressure, the valve is closed. For specific use, please consult ZECO Valve Group.

Part	Material	Standard
Body	Ductile Iron	EN 1563/DIN 1693
Bonnet	Ductile Iron	EN 1563/DIN 1693
Trim	Stainless Steel 431	EN10088-1/ASTM A959
Seat	Stainless Steel 431	EN10088-1/ASTM A959
Diaphragm	EPDM / NBR	ISO 4633
Pilot Valve	Stainless Steel 431	EN10088-1/ASTM A959
For the materials options not listed, consult factory. ZECO manufactures valves in more than 50 different alloys.

Product scope , Standards & Materials of High Pressure Shut-off Valve

Size Range: 2"~24"Pressure Rating: 10bar ~ 25barFace to Face Dimensions: AMSE B16.10, EN558-1Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2Coating: Fusion Bonded Epoxy Coating Inspection and Test: ISO 5208 / EN 12226-2

Zhengfeng Valve Group Co., Ltd. is a professional water valve suppliers. We provide Balancing Valve, high pressure valve china, shut off control valve, pressure shut off valve, high pressure shut off valve, control valveand so on. Want to know more? Please contact us.

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