Backflow Preventers
Basic informationThis sustainingvalveis opened to prevent the pipeline and equipment from being damaged due to overpressure when the pressure in the water supply pipeline exceeds the set pressure of pressure relief. The valve closes automatically when pressure drops to the set value.Features1. Accurate Pressure Control2. Fast Opening to Maintain Line Pressure3. Slow Closing to Prevents Surges4. Completely Automatic OperationPrincipleInlet pressure water enters the lower cavity of the pilot valve diaphragm from the guide valve when the pressure in the pipeline exceeds the set pressure of the guide valve to make its pressure increase to open the guide valve, the main valve control room outwards drain under the effect of the inlet pressure water to open the main valve, it starts to discharge pressure. When the pressure in the pipeline drops to the set pressure, the pressure in the lower cavity of the guide valve diaphragm decreases, causing the guide valve closed. This results in increased water pressure from the guide pipe to the pilot valve, then to the main valve control room. The main valve plate closes and begins to hold pressure.Installation and CommissioningThe pressure relief(sustaining) valve supports horizontal and vertical installation but should pay attention to the inlet and outlet direction of valve body water when installing. In general, one fire water supply system can only install one pressure relief valve. Within the operating pressure range of the spring specified in the nameplate, the opening pressure can be adjusted by rotating the adjusting screw to change the spring compression amount. For specific use, please consult ZECO Valve Group.Product Scope, Standards & MaterialsSize 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 CoatingInspection and Test: ISO 5208 / EN 12226-2
ZECOis one of the most professional control valve manufacturers china, and we have been devoted to produce valve chinafor many years. If you want to know more details or want a quotation, just feel free to contact us!
在线联系供应商
Other supplier products
|
|
Backflow Preventers | Basic informationThis sustainingvalveis opened to prevent the pipeline and equipment from being damaged due to overpressure when the pressure in th... |
 |
Backflow Preventers | Basic Information of Float Control Valve Thisvalve controls the level of the water in the water tower or sink. Features of Float Control Valve 2.... |
 |
12 Inch Butterfly Valve | Description of 12 Inch ButterflyValve: Most of ZECO 12 inch butterfly valves operated by hand-wheel, wrench and handles, pay attention to the oper... |
 |
3 Inch Butterfly Valve | Description of 3 Inch Butterfly Valve:ZECO 3 inch butterfly valve/butterfly valve 3 inchis a small diameter butterfly valve, usually manually opera... |
 |
Double Orifice Air Release Valve | Festures of double air release valve Body is provided with a shock-proof inner tube to protect the float； Lower water pressure can be closed to... |
Same products
 |
Belaz Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Belaz Dump Truck Parts Spare Parts-China Manufacturer and Supplier XTME offers a comprehens... |
 |
Komatsu Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Komatsu Dump Truck Parts -China Manufacturer and Supplier 100% OEM-Compatible Spare Parts-K... |
 |
China Gate valve | 卖方: Yuanda Valve Group Co.,Ltd. | China Gate valve China Gate valve A is a type of valve that uses a gate or wedge-shaped dis... |
 |
Non Return Valve Suppliers China | 卖方: Yuanda Valve Group Co.,Ltd. | Non Return Valve Suppliers China refers to the opening and closing member for the circular v... |
 |
Ball Valve | 卖方: Yuanda Valve Group Co.,Ltd. | Ball Valve Yuanda offers Cast Iron Ball Valves JIS 10K that are essential components for flu... |
