• Butterfly Valve Worm Gear Actuated Flange Triple Eccentric System 1
  • Butterfly Valve Worm Gear Actuated Flange Triple Eccentric System 2
  • Butterfly Valve Worm Gear Actuated Flange Triple Eccentric System 3
Butterfly Valve Worm Gear Actuated Flange Triple Eccentric

Butterfly Valve Worm Gear Actuated Flange Triple Eccentric

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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 Worm Gear Actuated Flange Triple Eccentric

Butterfly Valve Worm Gear Actuated Flange Triple Eccentric

Butterfly Valve Worm Gear Actuated Flange Triple Eccentric

 

4.Manual Wafer Butterfly Valve  Specification1) Sizes:

 DN40mm-DN1400mm

2) Materials:
a) Body: CI(cast iron ,GG25 )/ DI (ductile iron ,GGG40)

b) Disc:  DI / CF8 / CF8M / C95400 
c) Seat:  EPDM / NBR / TEFLON / VITON

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.

 

Q:I was wondering if someone could tell me the manufacturing date on this aircraft engine valve.
Wow Hannah! That's a cool find for sure! It appears to be possibly a valve for a radial aircraft engine as it looks very similar to ones i've seen used in Pratt+Whitney R3350's etc. It looks like it could probably date to the 1940's up thru the 1950's. Look for a Part Number stamped on the valve or on the box. After WW2 there were all kinds of manufacturers making parts for airplanes. Many were gobbled up by competitors, converted to manufacturing other products or went out of business altogether. However, a few did hang on....and I think this may be what has become of Thompson Aircraft today.... Thompson Aerospace, Inc 22431 Antonio Parkway B160-102 Rcho Sta Marg, CA 92688-2804
Q:How does the pneumatic butterfly valve control the angle of opening?
The angle of the rotating shaft is controlled so that the angle of the butterfly valve is controlled. You just have a good electrical locator
Q:Butterfly valve D71X-1.6C, DN50, there is no difference between C and no C? What do you mean by "concrete"?
Front is the same, there is C refers to the body of the material is carbon steel, without C, usually refers to gray iron (cast iron is more common, so are generally omitted)
Q:What does the triplex of pneumatic butterfly valve mean?
Air pressure reducing valve, filter, oil mist these three parts
Q:How to use the fire butterfly valve properly?
Clamp and groove type and signal butterfly valve, the first two have what requirements of installation, the operating handle can rotate to open and close the valve installation, signal wiring, mouth down, to prevent water and caused a short circuit three line grounding and alarm line for leakage protection and monitoring of the valve open or closed, general are in line with the alarm valve or flow indicator matched with water, indicating the spacing of not less than 300mm, no other special requirements
Q:My caravan is a bit sluggish on the pick up, I replaced the wires/plugs and the electronic distributor(I think thats what it is..). still a bit sluggish. Should i look at the valve gasket? Or fuel filter, or fuel pump next? 03 caravan sport 3.3L
the valve pan gasket won,t cause it but the fuel filter will if it,s starting to clog up and also the cat nverter !
Q:Is the pressure test of the centerline butterfly valve checked or checked?
Every factory factory must require pressure tests.
Q:Classification of telescopic butterfly valve
(2) temperature butterfly valve. 120 C<t<450 C butterfly valve(3) normal temperature butterfly valve. One 40C<t<; 120 C butterfly valve(4) low temperature butterfly valve. One 100<t< one, 40 C butterfly valves(E) ultra low temperature butterfly valve. T< one, 100 C butterfly valve (1) clip butterfly valve(2) flanged butterfly valve(3) lug butterfly valve;(4) welded butterfly valve
Q:What's the difference between cut-off valve, gate valve and butterfly valve? What's the difference in the working principle?
Gate valve, also known as gate valve, is a widely used valve. Its closing principle is that the gate sealing surface and the valve seat sealing surface are smooth and smooth, and they fit together to prevent the flow of the medium, and rely on the die shape of the top die, spring or gate to enhance the sealing effect. It mainly cuts off in the pipeline. The cut-off valve, also called the door, is the most widely used as a valve, it is popular is because the process of opening and closing the sealing surface friction between the small, more durable, highly open small, easy manufacture, convenient maintenance, not only for low pressure, but also suitable for high pressure. Butterfly valve with light characteristics, more than other valves to save material, simple structure, quick opening and closing, cutting and throttling can be used, the fluid resistance is small, labor-saving operation. Butterfly valve can be made into large caliber. Where you can use the butterfly valve, it is best not to make the gate valve, because the valve is more economical than the gate valve, and the regulation is good. At present, butterfly valves are widely used in hot water pipelines.
Q:Seat has said to the previous owner that the car needs a new air mass meter and dump valve.I am putting a new air mass meter on it.Does it have a dump valve.I know very little on this subject.
every turbo will have a dump valve(waste gate) to regulate the boost to the engine Dump valves are fitted to the engines of turbo charged cars and sit between the turbo outlet and the throttle body. When transitioning from a boosted state to a closed throttle state (as in between shifts), due to inertia, the turbo continues to pressurize air, but the closed throttle prevents the compressed air from entering the engine. In this case the pressure exceeds the preset spring pressure in the dump valve and the excess pressure is bled off to atmosphere. Even with a dump valve the compressed air acts as a brake on the turbo (slowing it down), because the pressure on the backside of the turbo is at a higher pressure than on the front side (and the air actually wants to flow through the turbo backwards). A blowoff valve is a more elegant solution to this problem by allowing the turbo to freewheel when the throttle is closed (equalizing the pressure on both sides of the turbo). Unlike a dump valve a blowoff valve can be used at multiple boost settings without reconfiguration. Blowoff valves are sometimes incorrectly called dump valves because they serve a similar function, but they are very different solutions to the same problem.

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