Butterfly Valve Price List DN350 and Electric Actuator Chinese Supplier

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1. Manual Wafer Butterfly Valve Description

Butterfly valve is mainly consisted of body, stem, disc, seat and driver(lever, gearbox, pneumatic and electric Actuator) and so on. On off and controlling flow of valve are made by turning stem and disc together.

 

2.Main Features of the Manual Wafer Butterfly Valve 

1)Small in size and light in weight and maintaince.
It can be mounted whereever needed.

2)Simple, compact structure, quick 90 degree on-off operation.

3)Disc has two-way bearing, perfect seal, without leakage under
the pressure test.

4)Flow curve tending to straight-line. Excellent regulation performance.

5)Various kinds of materials, applicable to different medium.

6)Strong wash and brush resistance and can fit to bad working condition.

7)Center plate structure, small torque of open and close.

8)Long service life. Standing the test of ten thousands opening and
closing operation.

9)Can be used in cutting off and regulation medium

 3. Manual Wafer Butterfly Valve Images

 

Butterfly Valve Price List DN350 and Electric Actuator Chinese Supplier

Butterfly Valve Price List DN350 and Electric Actuator Chinese Supplier

4.Manual Wafer Butterfly Valve  Specification

DIN3352 F4 resilient seat flange gate valves

1.size:DN40-DN300

2.medium:water

3.standard:DIN

4.certificate:ISO9001 CE


resilient gate valves

1.size:DN40-DN300

2.medium:water

3.certificate:ISO9001 CE

4.standard:DIN

available medium:water

working temperature:≤80oC

flange dimensions:DIN2501

face to face dimensions:DIN3202F4.

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:Which is more expensive, gate valve or butterfly valve?
Same diameter, the same material, with the pressure level, the weight of the gate valve is much heavier than the butterfly valve, about 2 times of the butterfly valve!
Q:What's the material of the butterfly valve seat?
The seating material shall meet the following criteria:1) fluid compatibility, including expansion, hardness loss, permeability, and degradation;2) hardness;3) permanent deformation;4) the degree of recovery after load removal;5) pull in and compressive strength;6) deformation before fracture;7) modulus of elasticity.
Q:Is the pressure test of the centerline butterfly valve checked or checked?
GB/T12238-2008 flange and clip connection elastic seal butterfly valveRules: butterfly valve must be carried out by factory inspection and testing, inspection qualified before leaving the factory.CJ/T 261-2007 "butterfly valves for water supply and drainage."Rules: each product shall be inspected by factory and quality inspection department in accordance with table 4. After inspection, the product certificate shall be attached to the factory before leaving the factory.
Q:What are the classification criteria for pneumatic butterfly valves?
The channel of the valve body inner surface smooth, fluid resistance, high CV value, strong circulation, moderate torque, the use of four seal structure and elastic rubber gasket seat with SI in high temperature aging on the outside sealing surface, zero leakage medium.Pneumatic butterfly, characteristics, there is a slit leaving the valve seat, the product is suitable for use in poor air circulation environment.The pneumatic telescopic butterfly valve is characterized in that the novel and reasonable design, unique structure, light weight, convenient operation, open and close rapidly; in addition to the telescopic valve for regulating and throttling effect, compensation pipeline temperature generated by thermal expansion and contraction function, but also for the installation of valve replacement and maintenance convenience. The sealing parts can be adjusted, replaced, sealed, reliable and so on.
Q:Butterfly valve in use when should pay attention to what problems?
After the last in the pneumatic butterfly valve after use, also need to be cleaned immediately after the valve is closed, should use soft cloth to clean the valve, which may have some impurities, dirt removal, and oil lubrication, so it can better guarantee the use of the next.
Q:What does "D41X-16" mean?
There are many kinds of valves, so each valve has a specific model. Butterfly valve D41X-16 code D refers to the butterfly valve, 4 refers to the connection form is flange, 1 refers to the drive mode is manual, X is the valve sealing ring material is rubber, 16 refers to pressure, 16 kg. Valve model is composed of seven elements: valve type, connection form, drive mode, structure, sealing ring material, nominal pressure, material. You can ask me if you don't understand. Dual valve []
Q:What's the difference between D71X-16 and D71H-16 butterfly valves?
First, model D71X model means that, on behalf of 7 representative D butterfly valve, butterfly valve connection form for clamp connections, 1 straight, X represents the seal in the form of soft sealing, the sealing surface usually NBR H metal seal is usually 2Cr13 16 represents the pressure of 16 kg pressure weldingJin Ya valve is the production of hard sealing butterfly valve or soft sealing butterfly valve line leader, what problems can ask their units, technicians will answer for you
Q:Butterfly valve switch direction respectively?
First, if the butterfly valve has been installed on the pipe, you can first see the mark on the handwheel. Second, there is a switch indicator on the general worm gear.
Q:Which is better, the round two lobe butterfly valve?
Can be directly installed in the ventilation pipe, connected with the wind pipe, used to control the speed, adjust the indoor air, the double structure diagram can reduce the space length of the blade is unfolded, and also has the characteristics of small airflow resistance, convenient adjustment etc.
Q:What is the difference between wafer (flangeless) type and LUG type of butterfly valves?
WAFER butterfly valve is the valve is divided into LUG (ears) with and without LUG, ordinary LUG without clip on 12 points in the direction of valve is generally two to four bolt holes was not, whereas the LUG of butterfly valve cross dispersed in a circle. Bolt hole. With LUG all bolted through the LUG, so that the butterfly valve and the clamp on the two flange connection is more solid, you check the valve picture, it is easy to understand

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