Combined butterfly check valve
Price : US $1 - 3,000 / Set
Basic information of Combined Butterfly-Check Valve
This valve acts as a closed circuit valve and a check valve to protect the system by avoiding and reducing the backflow of the intermediate fluid in the piping system and causing excessive water hammer.
Features of Combined Butterfly-Check Valve
1. Valve opens automatically when the pump starts and closes automatically before the pump is stopped;
- In case of power failure at the pumping station, the valve closes like a hydraulic damped check valve;
- Both opening and closing times are adjustable;
- The hydraulic power pack is also equipped with a handpump for emergency opening of the valve.
Principle of Combined Butterfly-Check Valve
This valve is opened by means of a cylinder driven by the hydraulic power pack. The
valve is only set to open at a constant speed, and the opening time can be adjusted by adjusting the knob of the valve opening in the hydraulic oil station. Before the 75 ° fast closing, time is 5 ~ 12 seconds (adjustable site); after the 15° slow closing, time is 20 ~ 40 seconds (adjustable site). The realization of closing the valve fast and slow is mainly regulated by controlling the amount of oil drainage through adjusting the two-way oil drainage regulating device. The regulating part is in the part protruding from the upper part of the oil cylinder. If the adjustment is needed, the part protruding from the upper part of the oil cylinder should be removed.
Installation and Commissioning of Combined Butterfly-Check Valve
The pump motor action is controlled by the internal pressure of the accumulator. After the combined check valve butterfly is put into operation, after a period of time, the oil pressure of the system will decline. When the pressure of hydraulic oil drops to a certain value, it needs to be replenished. Otherwise, the valve will be affected. For specific use, please consult ZECO Valve Group.
ZECO is balancing china check valve manufacturers. Heating and cooling systems designed with a constant flow principle circulate large amounts of water. ZECO balancing valves can ensure that the design flows in the different parts of the system are correct to do as efficiently as possible.
ZECO Valve Group, founded in 1991 with focus on manufacturing Water valves, including control valves, balancing valves,gate valves, butterfly valves, check valve, and air valves.
Contact : Zhao Johnson, 86 21 39597277
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