Lift Check Valve Animation

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FAQ

How to install fire fighting pipe and flue fire check valve?

4, the installation of flue should each layer as bearing, bearing steel 2 root diameter over 14mm?.5, after the installation of the flue, in each flue check valve of the reserved installation of fire type flue check valve, with special glue mixing cement, coated with a check valve installed in the valve hole edge, and then back to the reservation in check at.6, the construction should be reserved at all levels of the hole, covered with a cover plate, to ensure safety in construction, to prevent construction waste fall into the flue.

Which kind of steam check valve is good?

The shell material 13, ball valve can be made of stainless steel, sealed hollow sphere parts can be coated PTFE engineering plastics, can also be applied in the pipeline so general corrosive medium, the temperature at -101--150 DEG C, the nominal pressure is less than 4.0MPa, nominal in the range of 200 - 1200;14, for non compressible fluid check valve selection, first of all the required closing speed evaluation, the second step is to select the type of check valve that may meet the required closing speed;15, can be used for check valve selection of fluid compression can be selected according to the similar method can not check valves for compressed fluid flow, if the medium category is used for large, compressible fluid check valve can be used for a slow device, if not continuous medium flow fast to stop and start such as, the outlet of the compressor, use the lift check valves;16 the check valve shall determine the size of the response. The valve supplier must provide the data data of the selected size so that the valve size of the valve opening at a given flow rate can be found;17, for the following DN50mm high and low pressure check valve, should choose vertical lift check valve and straight through lift check valve;18. For DN50mm low pressure check valves, butterfly check valves, vertical lift check valves and diaphragm check valves shall be used;19, for DN greater than 50mm, less than 600mm high pressure check valve, it is better to use swing check valve;20, for DN greater than 200mm, less than 1200mm of medium and low pressure check valve, should choose no wear ball check valve;21, for DN greater than 50mm, less than 2000mm low pressure check valve, Iraq butterfly butterfly check valve and diaphragm check valve;22, for the closure of water shock or small impact of the pipeline, it is appropriate to use the slow closed swing check valve, butterfly butterfly valve closed

The difference between the plunger type check valve and the lift check valve

The two elastic seals are separated by a collar and secured to the sealing ring around the plunger by the load exerted by the valve cover nut on the valve cover. Elastic ring can be replaced, you can use a variety of materials, the valve is mainly used for "open" or "off", but with a special form of plunger or special ring can also be used to adjust flow.

Ball shaped sewage check valve pictures and working principle of the structure.

Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.

What is the HC41X-16Q model of the optical valve? What is its main function?

the medium back, due to weight and disc valve by the medium reverse force, so that the sealing surface of the valve flap and valve seat sealing and closed, to prevent the media counter to.1, fluid flow is smooth, local head loss is small;2 、 with guiding device, closed flexible, linear sealing, good return effect, can effectively reduce noise;3, small size, light weight, easy installation and maintenance.

Is there a check valve with a relief valve above?

You can be sure to answer, no such installationThe fire check valve is not the same as the relief valve.

Does the regulator have a check action? If yes, can I use it as a check valve?

There are some regulators that have this reverse cut-off. A regulator without overflow. Such as gas regulator.For example, the compressed air regulator has no reverse cut-off function.Regulators in the form of a lot of specific circumstances, specific analysis, only to exceed the body can withstand the pressure, generally not bad.

What is the difference between the check valve and the check valve?

1, spring: the liquid from the bottom up, rely on the pressure spring controlled valve, the pressure disappears, the spring force the valve, sealing liquid backflow. Often used in the smaller diameter check valve.2, gravity: and spring similar to rely on the valve's own gravity closed to prevent backflow.3, swing type: liquid in the valve straight through, relying on the pressure to open the side of the rotating valve flap, after the loss of pressure, the valve depends on the weight back, the reverse of the liquid pressure closed valve. Other one-way valves (check valves), such as the sewage check valve, air defense explosion-proof valve and liquid use of the principle of the check valve is very similar.