Butterfly Valve,Ductile Iron Wafer Butterfly Valve

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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,Ductile Iron Wafer Butterfly Valve

Butterfly Valve,Ductile Iron Wafer Butterfly Valve

4.Manual Wafer Butterfly Valve  Specification

 

Butterfly Valve,Ductile Iron Wafer Butterfly Valve

Butterfly Valve,Ductile Iron Wafer Butterfly Valve

 

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:Add a valve on the trachea, when the valve behind the use of gas units,
It seems that this is not a valve, it should belong to the flow switch
Q:What's the meaning of the "single valve"?
Make is commonly known as "living joint". The utility model is a common pipe connecting piece which can be conveniently installed and disassembled.
Q:Why use the pump outlet valve to adjust the flow rate?
With the advantages of the pump outlet valve adjustment, 1, you can control the pump outlet pressure, 2, you can control the motor current is not more than the process conditions, 3, control motor power, to ensure the normal operation of the pump.
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:How do I open the gas valve?
Third: in the following there is a black disk like thing, commonly known as the gas sound core. This one is the same as the second one, half or all. 1, according to the routine, now the handle position shows that the valve is open. 2, if the handle rotated 90 degrees, the gas pipeline gas has no change, should be the stem slipped, can not drive the valve ball rotation. Try rotating several times. If it still doesn't work, ask a professional to check it out.
Q:How can the material be checked by valve approach? What experiments do you need?
First of all, to check material certification, and secondly, the material appearance, shape and size of the initial test, again on the alloy material according to the standard spectrum analysis, the valve to do pressure test.
Q:What valve should be used to test the water valve?
Switch and multi way valve in the pipeline not only can flow, and flow diversion, flexible control of the medium, but also to turn off any channel to the other two channels. This kind of valve should be installed horizontally in the pipeline. Classification of ball valve: pneumatic ball valve, electric ball valve, manual ball valve.
Q:Air compressor out of the gas with what kind of valve control okay, globe valve or other?
What's the use of your air compressor? Is it manual or automatic? By the way, I think it's ok if the demand is not very strictWhat we used on board was the cut-off.
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 does the ZH41 valve ZH41 mean, and what other specifications?
Is the model wrong? The correct one should be Z41HGate valve, hand flange connection name, rod type single gate, sealing surface is alloy steel

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