Swing Check Valve

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Product Description:


Swing check valve


*Good quality with reasonable price.

*Qick deliver time and enough store of valves.

*Many types to choose. 


Swing check valve 

Bolted cover,swing type disc

Threaded or welded seat ring

ASTM A216 WCB,A217 WC6,A351CF8,A351CF8M,

A351 CF3,A351 CF3M,A351 CN7M

Specifications of flanged Swing Check Valve

size: 1/2"-42"

material: steel


Guarantee: 18months

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Q:What about boiler non-return valve without return?
Reliably disconnect the front and rear valves of the check valve and open the check valve spool. 1, lift check valve, remove dirt and impurities out of the valve, and the necessary lifting shaft between the sand, and then check the sealing surface (line), install the recovery; 2, open the valve, visible to the rotary valve plate, sometimes is the axis of rotation is not flexible, it will add oil activities for many times, then look at the rotary valve in the fully open, whether the opening angle is too large, can not rely on medium reflux and gravity recovery closed, if so, then the opening plus limit (which can be in the spool in the valve plate drilling and tapping screw, in a small Luo Si), do not let the valve plate open to the vertical state, which can be opened to an angle of 80 degrees. You can have a try. Good luck. Happy new year.
Q:What is the function of the check valve on the air compressor?
Check valve to prevent backflow of gas compressor back to the machine in a series of problems, as followsA gas flow will lead to failure, load startup, startup process if the machine internal high pressure will cause the motor overload start, starting current of the motor will be too high, at the same time, the impact of transmission components is also very large, generally good machine will be some type of protection.Two, multiple units of the system may make the tank filled with water, resulting in the unit can not start properly.Three, because of the shutdown state, most of the air compressor unloading valve is open, so if the gas flow back, but also cause energy losses.
Q:Above the flue that valve is called smoke exhaust valve or check valve, I heard there is a five anti exhaust valve
The names are different, and they are acceptable. Five, anti exhaust valve is unique to 10000, the first class of technical effects
Q:Check valve symbols?
The check valve is divided into three kinds: lift check valve, swing check valve and butterfly check valve:1. lift check valve is divided into two types of vertical and horizontal.2. swing check valve is divided into single, double flap and multi flap type of three.3. butterfly check valve is straight through type.The above types of check valves can be classified into thread connection, flange connection, welding connection and clamp connection in connection forms of four kinds.
Q:The principle of the check valve
The function of the check valve is to allow the medium to flow in one direction only, and to prevent the flow in the opposite direction
Q:Is the hdf41x 1.6Mpa a check valve?
The backflow preventer consists of low pressure backflow prevention device and vacuum type backflow prevention device two, according to the national standard of low pressure backflow prevention device of head loss is less than 3 meters, decompression type backflow prevention device of head loss is less than 7 meters.
Q:What's the difference between the cut-off check valve and the stop valve?
The principle difference between the check valve and the cut-off valve is that the non-return valve allows only one-way flow of liquid, allowing only one flow from one end to the other. It is a one-way valve, and the shut-off valve allows two-way flow. The biggest difference is the structure of the valve head and valve closing method is connected by the check valve is separated, the appearance of the cut-off valve import and export in a plane and the cut-off valve is a one-way valve, arrow shell stop check valve on the other.
Q:My hood inside outside blow valve pops ringing
Do you think the situation in the wind ` a valve installed in the opposite direction of the flue you can, you should pay attention to when installing wind don't understand the whole, an anti air valve system, like on the wall in the general store has large lampblack machine. Or you in the hood where to buy, you can go to a can go, I also bought the lampblack machine, where he will give you, or call at the time according to the hood people to give you what you can handle.
Q:Why can't the check valve on the air pipe be used when the wind speed is less than 8 meters?
First of all, you must understand the working principle of the check valve, indeed, as you said, you can adjust the position of the hammer by adjusting the position of the drop hammer.If you are in their own design and production, consider the thickness of the blade, drop hammer size, weight, and other parameters considered.Hope to be of help to you!
Q:The self-priming pump with check valve (check valve, water valve)?
Water inlet generally has a check valve, if not, then only in the suction port on the installation of the check valve. Of course, you can also install a one-way valve on the pipe near the suction port.
Our products are in accordance with different standards, such as API, DIN, JIS, BS, and GB, as well as non-standards. We also provide OEM products according to client requirements. Our products are widely used in oil refinery, petroleum, chemical plant, power station, natural gas, and civil industry. We have obtained ISO9001 International Quality Management System Certificate.

1. Manufacturer Overview

Location Jiangsu,China
Year Established 2001
Annual Output Value US$10 Million - US$50 Million
Main Markets North America
South America
Eastern Europe
Southeast Asia
Mid East
Eastern Asia
Western Europe
Company Certifications ISO9001

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Language Spoken: English
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Contract Manufacturing OEM Service Offered
Product Price Range High and/or Average