Corrosion resistant lining fluorine lining swing check valves H44F back-pressure valve

Corrosion resistant lining fluorine lining swing check valves H44F back-pressure valve

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 10 set

Supply Capability:: 100 set/month

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Corrosion resistant lining fluorine lining swing check valves H44F back-pressure valve

Stamdard

Design:GB 12239

Face to face:JB 1688

Flange dimension:JB 78 Or accoring to contract

Test:GB/T 13927

Symbol:GB 12220

Supply: GB/T 12252

Usually, the fluid under pressure to make the disc of the valve opening, and exported from flow inlet side to side.When the import side pressure is lower than the export side, the disc under the action of fluid pressure and gravity itself automatically to channel closed, to prevent fluid backflow.Disc in different ways, according to the check valve is mainly divided into the lift, swing and butterfly 3 classes.Lift check valve body more similar to cut-off valve body, the fluid resistance is larger.This type of check valve for high pressure small, often using the disc and spherical shape.Swing check valves on the fluid resistance is small, suitable for medium and small size, low pressure, large diameter pipelines, often on the channel baffle valve set up multiple disc, become more disc type.Similar to the shape of the butterfly check valve and butterfly valve.It has simple structure, small resistance for fluid.Check valve such as closing too fast, could cause a liquid in the liquid pipe, noise, and even cause the damage of valve parts.In order to avoid this kind of situation, when need can choose buffer function of the check valve, extend the closing time.

Q:Check valve h44h-25p what does that mean?: H- stainless steel4- flange connection4- rotary single structure check valveH sealing material is Cr13 stainless steel25- pressure 2.50MPAP-18-8 stainless steelH44h-25p= stainless steel flange connection, swing type single check valve pressure 2.50MPA valve body, material 18-8 stainless steel

Q:How many kinds of check valves should be used?: Ball check valve because the sealing part is covered with rubber ball, therefore, good sealing performance, reliable operation, anti water hammer performance; the seals can be a single ball, they can make more balls, so you can make large caliber. But its seal is wrapped in rubber hollow sphere, does not apply to high pressure pipeline, only applies to the middle and low pressure pipeline.Because the shell material of spherical check valve can be made of stainless steel, sealed hollow sphere parts can be coated PTFE plastics, can also be applied in the pipeline so general corrosive medium.The check valve in the working temperature between -101~150 DEG C, the nominal pressure is less than 4.0Mpa, nominal in the range of 200~1200mm

Q: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.

Q:Can the exhaust air outside the wall be fitted without a check 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 mediumThe installation of check valves (Check, Valve) shall pay attention to the following items:A do not allow the check valve to bear weight in the line, and the large check valve shall be independently supported so as not to be affected by the pressure generated by the piping system.B, when installing, pay attention to the direction of the flow of medium should be in accordance with the direction of the body marked arrow.C and vertical vertical check valves shall be installed on the vertical pipe.D and lift type horizontal check valves shall be installed on horizontal pipes

Q:Are the common check valves stand upright or horizontally installed?: 2. swing check valves are generally installed on horizontal or vertical or inclined pipes.

Q:Check valve 1 inches DN25 what do you mean?: Crown valve pressFirst, an inch equals DN25That is, fixed values to estimate how large a pipeline isOne inch of check valve is mostly copper check valveThe price of I should be around 25 yuan

Q:Does the check valve damage affect the flow rate?: Ball check valve will not affect the flow, such as the clip type check valve once damaged, it will affect the flow.

Q:Swing check valve can prevent any sewer defection: 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. This kind of valve should be installed horizontally in the pipeline.

Q:How to use the check valve when the size of the pressure?: When using check valves, the magnitude of the pressure shall correspond to the pressure level of the pipe

Q:Can the check valves fit two in one tube? One up, the other down: A water pipe is used for launching, and the two check valves that you install are reverse, and the water is blocked by one of the check valves on either side

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