Pilot Operated Check Valve
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FAQ
- Butterfly check valve should be equipped with special flange for butterfly valve
- No, with a special appearance Jansen point flange butterfly valve. It can barely be installed without special flanges
- What are the differences between the vertical check valve and the horizontal check valve?
- Difference：The main difference is that the valve center and valve seat are placed upright and horizontally placed, usually designed with the pipe.Brief introduction:Vertical check valve: because of the pressure acting on the inlet end of the pipeline, the spring resistance is overcome so that the valve is opened or closed. When the inlet end of the media pressure is lower than the exit end, the spring will push the spool to the valve seat, so that the valve closed, to prevent the flow of medium, so the beginning of the role of back.Horizontal check valve, also known as check valve, its role is to prevent the medium back in the pipeline. The opening and closing parts depend on the flow of the medium and the power is turned on or off by itself. The valve that prevents the backflow of the medium is called a check valve. Check valves belong to the automatic valve, mainly used for one-way flow of media channels, allowing only medium to flow in one direction, to prevent accidents.
- God, can you explain to me in detail why?
- The exit of the general pump is the first soft connection (shock absorber), followed by the check valve, and then the partition valve (such as butterfly valve, gate valve, cut-off valve, etc.), this is not the final answer.The question is interesting, and no corresponding information has been found in the relevant standards. We have also discussed the related issues, but differences of opinion is relatively large, the advantages of 1, first installed check valve installed after the valve or butterfly valve, check valve, can be protected, especially in a parallel pump, when the pump does not start, another pump starts when the impact force is gate valve or butterfly valve bear, disadvantages: gate valve or check valve who will protect? There have been a case of butterfly valve is broken. 2, first installed gate valve or butterfly valve installed after the check valve, advantages: can protect the butterfly valve or gate valve, the impact on the check valve to bear. Disadvantages: check valve who will protect, check valve by pressure difference switch, if the high pressure high pressure pipe, pump, if the flow is not stable, so check valve will repeatedly switch, will affect the check valve life. Personal opinion: check valve, check valve performance now have changed, many are using the slow closing check valve, so the impact force is two aspects to bear, because exports are not fully open the valve or butterfly valve, so you can put in check after the gate valve or butterfly valve valve. If not the slow closing check valve installed in the valve or the best after the butterfly.
- What is the HH44X-16 H of the double acting slow closing check valve? Can you explain it in detail?
- 1. The first H is the meaning of the check valve (the first letter of the Chinese phonetic alphabet). The second H is the meaning of "slow closing" (the first letter of the Chinese phonetic alphabet).
- What's the size of the check sleeve?
- According to the valve connection mode (thread connection, flange connection), select valve rating, modify the valve name
- How do I install the pump outlet check valve?
- Order note: 1. Pump outlet check valveProduct name and model number 2. Whether or not to take accessories for our correct selection. Use pressure. Use medium temperature.Two, if the company has been selected by the design unitPump outlet check valve type, please pump outlet check valveThe model is ordered directly from our sales department.Three, when the use of the occasion is very important or the environment is more complex, please try to provide design drawings and detailed parameters, by our valve company experts for your audit checks. If you have any questions: please call us for advice:,We will do our best to provide you with quality service.
- What kind of valve does the check valve belong to?
- 1. check valves are automatic valves;2., if the valve is cast iron, can be cast iron valves; if the valve is cast steel, can be cast steel valves; of course, can also beIn copper valves, stainless steel valves,,,,,,,3., if used in steam, can belong to the steam valve
- I also calculate each pump check valve and gate valve?
- The pump adapter itself does not include the gate valve and the check valve! Only when a group called pump adapter will include adapter, gate valve and check valve!If the pump adapter in the list of units for the group then all included and work content in clear note on the contents.If you do it alone, write out no items!
