Butterfly Valve Made in China on Hot Sale

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$50.00 - 3,000.00 / pc
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Tianjin
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TT or LC
Min Order Qty:
100 pc
Supply Capability:
10000 pc/month

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1. Manual Wafer Butterfly Valve Description

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.

 

2.Main Features of the Manual Wafer Butterfly Valve 

a)Cast hole. Flange connection meet ANSI 125/150#   DIN PN10/16   BS4504 PN10/16 in the meanwhile.

 

b)Soft seat. Replaceable. Increase of service life.

 

c)Double half shaft without pin.

 

d) Square and short neck. Easy to stick scutcheon and cost saving.

 

3. Manual Wafer Butterfly Valve Images

 

Butterfly Valve  Made in China on  Hot Sale

Butterfly Valve  Made in China on  Hot Sale

 

4.Manual Wafer Butterfly Valve  Specification

 

 

Butterfly Valve  Made in China on  Hot Sale 

5.FAQ

 

1. What is manual wafer butterfly valve?

A: Wafer style is the more common of the two and is less expensive than the lug style. The wafer style butterfly valve is just about the standard. It ís so common that no one even bothers to use the word "wafer" when ordering a butterfly valve. It is taken for granted that if a butterfly valve is ordered, a wafer style will be received.

 

2. How about the Installation of the Wafer Style Butterfly Valve?
A: Butterfly valves are installed by inserting the valve between two flanges using bolts or studs and nuts to hold it all together. This type of installation, of course, makes it impossible to disconnect just one side of the piping system from the valve. That benefit is received using the lug style valve.

 

3. What is the working principle of manual wafer butterfly valve?

 A: A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.

 

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Q:What valves are needed on the construction site?
Order valves1, according to the use of place, use, and understand the relevant laws and regulations, specifications, standards, policies, approval may be used after the selection of valves suitable for various requirements;2, confirm the working conditions of valve, applicable medium, working pressure and medium temperature;3, determine the nominal diameter corresponding to the pipe: DN (mm), NPT, NPS (");4, determine the way to connect with the pipe: flange type, internal (external) thread type, welding type, clamp type, clamp type, card sleeve type, etc.;5, determine the valve operation mode of driving: manual, worm gear drive, pneumatic, electric, hydraulic, electromagnetic, electro hydraulic, etc.;6, confirm the types of valves: gate valve, globe valve, throttle valve, plunger valve, ball valve, butterfly valve, diaphragm valve, plug valve, check valve, safety valve, drain valve, pressure reducing valve and other special valves;7, determine the use of valves: switching type, adjustment type, safety type and so on;8, determine the valve shell and internal parts of the material: carbon steel, alloy steel, stainless steel, ductile iron, gray cast iron, copper alloy, aluminum alloy, plastic and so on;9, determine the valve sealing performance requirements, sealing level or sealing leakage;10, determine the valve coating requirements, packaging requirements, transportation requirements;11, special needs of the valve should also be determined: structure length, valve height, appearance size, flow resistance, emission capacity, flow characteristics, protection level, explosion-proof performance and other parameters;12, determine the valve installation position and posture.
Q:What is the diameter of a general pipe valve?
The relation between the common mark and the nominal diameter:1, plastic pipes (U-PVC, water pipes, PPR tubes): Phi 20-DNl5, Phi 25-DN20, Phi 32-DN25, Phi 40-DN32, Phi 50-DN40, Phi 63-DN50, Phi 75-DN65, Phi 90-DN80, Phi 11O-DNl00, Phi 160-DNl1502, seamless pipe: DN15- 22mm DN20- 27mm DN25- phi, Phi Phi Phi Phi 34mm, DN32- 42mm DN40- 48mm DN50- 60mm DN65-, Phi Phi 76 (73) mm, DN80- 89mm DN100- 108mm DN125- phi, Phi Phi 133mm, Phi 159mm, Phi DN150- DN200- 219mm, DN250- 273mm3, DN15---1/2--- four; DN 20---3/4--- six; DN 25---1, DN 32--1 1/4 -- an inch; inch two; DN 40---1 1/2 DN 50--- - an inch and a half; 2 - two inch DN 65---; 2 1/2, two and a half inches; DN 80--- 3 - three inch two; DN 100--- 4 - four inches; DN 125-- 5 - DN 150--- 6 - five inch; six inch 8---- eight inch 200--- DN;
Q:What is the valve?
Is the switch, switch on the pipeline and can walk on water, air, oil and so on go. A lot of categories, you can control the on-off, control pressure safety valve, as well as a lot of filtering valves.
Q:Remove the handle and lever the stem rotation with a wrench,
Monel alloy is mainly applied to the valve in the medium containing hydrofluoric acid.6, Hastelloy alloy is mainly used in the valve of strong corrosive medium such as dilute sulphuric acid7, titanium alloy is mainly applicable to all kinds of strong corrosive medium valveRecommendations for the GB standard of steel and ASME second A copies at American Standard. For American Standard steel can also see ASME B16.34
Q:What's the sewage treatment valve with?
Butterfly valve manufacturers are many, the price is also different, as long as the right can.
Q:What does the torque of the valve mean?
Unit: Newton M. torque is the minimum torque used to turn on the valve. It is the force that opens the valve!The valve that indicates the opening of the PZ73X-10C DN50 requires 5 meters of force.
Q:What courses in the University involve valves?
Fluid mechanics, "material mechanics", "mechanical design" and other courses on the design of the valve are helpful.
Q:What should be checked before using the valve?
The valve must be tested before installationI. examination of documentsThe valve must check the quality documents before installation, the valve manufacturer should be nameplate, nameplate and the body should be the name of the manufacturer, valve type, nominal pressure, nominal diameter and logo, must comply with the "universal valve logo" GB 12220.Two, appearance inspection
Q:What is the choice of pneumatic valve or electric valve for ultrafiltration inlet control valve?
Pneumatic valve compared to the electric valve, the valve can be the same, rubber lined butterfly valve or other valves, pneumatic valve opening speed (Basic 1 second can be fully open), the price is lower than the electric valve. But there must be process air (4-6bar compressed air). According to my experience, if the scene has compressed air, it is recommended to use pneumatic valve, if there is no compressed air, it is recommended to use electric (electric valve expensive, open valve slow).
Q:Chinese valve and a valve which is better?
Look what valve you use, ah, these two can be ah!

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