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!
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
3 Inch Ball Valve | Description of 3 inch stainless steel ball valve: ZECO3 inch ball valveis usually a floating ball valve, the material can also be divided into cast... |
 |
Bronze Flow Balancing Valve | Basic information Venturi flowmeter is adopted in the body of a balanced valve with threaded connections to make flow adjustment more accurate and ... |
 |
Metal Seated Gate Valve | Features of Metal Seated Gate Valve The stem is permanently sealed by three independent seals, and if the seal wears out after long use, the gland... |
 |
Backflow Preventers | Basic information Venturi flowmeter is adopted in the body of a balanced valve with threaded connections to make flow adjustment more accurate and ... |
 |
Gear Operated Gate valve | Description of Gear Operated Gate Valve: ZECO gear operated gate valve is defined according to the driving mode. Gear operated gate valve is mainl... |
Похожие товары
 |
Belaz Dump Truck Parts | Продавец: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Belaz Dump Truck Parts Spare Parts-China Manufacturer and Supplier XTME offers a comprehens... |
 |
Komatsu Dump Truck Parts | Продавец: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Komatsu Dump Truck Parts -China Manufacturer and Supplier 100% OEM-Compatible Spare Parts-K... |
 |
China Gate valve | Продавец: 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 | Продавец: Yuanda Valve Group Co.,Ltd. | Non Return Valve Suppliers China refers to the opening and closing member for the circular v... |
 |
Ball Valve | Продавец: Yuanda Valve Group Co.,Ltd. | Ball Valve Yuanda offers Cast Iron Ball Valves JIS 10K that are essential components for flu... |
