Pressure Relief Valve
This valve is 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.
Festures of cold water pressure relief valve
Accurate Pressure Control
Fast Opening to Maintain Line Pressure
Slow Closing to Prevents Surges
Completely Automatic Operation
Inlet 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.
Pressure Relief Valve Installation and Commissioning
The 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 and Gate Group.
Pressure Relief Valve Material and Standard
Size Range: 2"~24"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2
|
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. |
||
As one of pressure relief valve suppliersand pressure relief valve manufacturers, we can offer kinds of related products for sale, if you want to buy pressure relief valve, please contact us.
If you want to know more kinds of check valve, please visit our website.
Send product request
Other supplier products
 |
Forged Steel Valve | ZECO forged steel gate valve chinarefers to the blank of valve, which is a forging piece with certain mechanical properties, shape and size produce... |
 |
Wafer Check Valve | The double plateChina wafer check valveis used for the pure pipeline, industry, environmental protection, water treatment, high-rise building water... |
 |
6 Inch Valve | 6 water valveis commonly used with flanged gate valves and various upper valves for water, including dirt separator.Features of ZECO collector:1. T... |
 |
Rising Stem Resilient Gate Valve | The rising stem gate valves produced by ZhengFeng are mainly installed on various pipelines and used as two-way closed-circuit equipment. They are ... |
 |
Swing Check Valve | What is a Swing Check Valve? A Swing Check Valve is desinged to prevent the medium in the pipeline from flowing back. As pressure reaches zero, th... |
Same products
 |
China Gate valve | Seller: 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... |
 |
Gate Valve Vs. Ball Valve | Seller: Yuanda Valve Group Co.,Ltd. | Gate Valve Vs. Ball Valve Gate valves and ball valves are both types of valves that are used... |
 |
Non Return Valve Suppliers China | Seller: Yuanda Valve Group Co.,Ltd. | Non Return Valve Suppliers China refers to the opening and closing member for the circular v... |
 |
Common Types Of Check Valves | Seller: Yuanda Valve Group Co.,Ltd. | Common Types Of Check Valves A is a valve whose switching parts are disc-shaped and rely on ... |
 |
Brass ball valve | Seller: Yuanda Valve Group Co.,Ltd. | Brass ball valve Brass ball valve Applications: Water Supply: Commonly used in residentia... |
