Backflow Preventers
Basic information
This bronze adjustable dynamic flow balancingvalve is required to maintain the flow of these pipes or end equipment at all times within the working differential pressure range. As the system pressure fluctuates, the valve will automatically move up and down to change the opening, thus keeping the pipeline flow constant.
Features
Principle
When the pressure difference control range is above, the valve tank is completely compressed, and the cross flow area is only the minimum design channel and the flow rate changes with the pressure difference. When the pressure difference is within the control range, the valve tank moves with the pressure difference, thus changing the flow area and keeping the flow at the set value. Under the pressure differential control range, the valve is fully extended to reveal the maximum overcurrent area and the flow rate changes with the pressure difference.
Installation and Commissioning
This valve is mainly used for flow regulation and hydraulic balance. It can not be used as a shutoff valve because there is a certain amount of leakage when it is closed. For specific use, please consult ZECO Valve Group.
Product scope , Standards & Materials
Size Range: 3/4"~2"
Pressure Rating: 10bar ~ 16bar
Face to Face Dimensions: EN 558-1, ASME B 16.10
Flange End Dimension: BS 21
Inspection and Test: ISO 5208 / EN 12226-2
ZECOis one of the most professional control valve manufacturers china, and we have been devoted to produce control 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 informationof the big size gate valve This valve is used in the pipeline as a cut-off valve. Features Principle The big sizeresilient gate va... |
 |
Check Valve | The check valve for water of ZhengFeng is the advanced pipe control equipment at home and abroad, mainly installed at the entrance of hydropower st... |
 |
Manual Balancing Valve | Festures of manual central heating balancing valve Straight flow structure, low fluid resistance; Handwheel display the number of opening cyc... |
 |
Strainer & Dirt Separator | Strainers, dirt separators and backflow preventers are designed to prevent impurities from entering the specified pipe section. Comparing these thr... |
 |
Ball Check Valve | ZECO is one of the leading check valve manufacturers china, China. ZECO check valveprovides non-slam closure, have a low head loss and close drip-t... |
Same products
 |
Combination angle valve | 卖方: Zhejiang Huaqi Information Technology Co., LTD | Meet our Brass Angle Ball Valve, a versatile and reliable solution for controlling fluid flow in ... |
 |
Multifunctional hydraulic control valve | 卖方: FLUID TECH PIPING SYSTEMS (TIANJIN) CO.,LTD | Features: Size: 2"-24”(DN50-DN600) Material: Ductile iron ASTM A536, 65-45-12 Dimension:... |
 |
Fire Protection Grooved Butterfly Valve | 卖方: FLUID TECH PIPING SYSTEMS (TIANJIN) CO.,LTD | Features: Code：D81X4 Size: 2"-12”(DN50-DN300) Material: Ductile iron ASTM A536, 65-45-12... |
 |
Dry Ash Gate Valve | 卖方: China Valve Industry Co., Ltd. | The dry ash gate valve is designed for both inlet and outlet pipelines. It features... |
 |
China factory High temperature double head bolt 2""-8UN Steam Turbine RSV N for power station | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China factory High temperature double head bolt 2""-8UN Steam Turbine RSV N for power stationOur... |
