• ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve System 1
  • ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve System 2
ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

ISO Standard Eccentric Double Flanged Rubber Seal Butterfly Valve

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China main port
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Min Order Qty:
5 set
Supply Capability:
50 set/month

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1. 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 Butterfly Valve 

(1) 90° movement for full open/close position. 

(2) Excellent control characteristics.Tight shut-off even after innumerable operations.

(3) Installation cost considerably reduced because of very low weight and compact design.

(4) Longer life and reliable service with minimum component wear.

(5) Renewable seats. No supplementary gasket required with the adjacent pipework.

(6) Body & Stem totally protected from service fluid.

 

3. Butterfly Valve Images

 

 

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

 

4.Butterfly Valve  Specification:

BODY

DISC

STEM

SEAT

BUSHING

MATERIAL

WORKING PRESSURE

CAST IRON

DUCTILE IRON WITH NICKEL PLATED

CARBON

STEEL

NR

-20-+85

LUBRIZED

BRONZE

DUCTILE

IRON

ALUMINUM BRONZE

STAINLESS
STEEL

HYPALON

-18-+135

INSTANTANEOUS

-18-+149

PTFE

ALUMINUM
BRONZE

STAINLESS STEEL

EPDM

-45-+135

INSTANTANEOUS

-50-+150

CARBON

STEEL

CARBON
STEEL

NEOPRENE

-7-+193

INSTANTANEOUS

-7-+107

STAINLESS STEEL

NBR

-12-+82

INSTANTANEOUS

-12-+93

WEAR-RESISTANT RUBBER

-10-+50

VITON

-23-+150

HEAT-RESISTANT RUBBER

-20-+150

PTFE

+10-+150

 

5.FAQ

1. What is manual wafer butterfly valve?

 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?

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 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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The standard distance is 30CM
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Kitchen hot and cold faucet leak, you can change the pad or new products. First, the reasons for failure: 1, the general hot and cold water faucet water leakage, are due to the use of time, faucet inside the gasket aging, wear caused. Second, the maintenance method: 1, just open the faucet put on a rubber or silicone pad on the line. 2, just buy a new faucet spool on the line. 3, direct replacement of the faucet.
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Q:Can the basin faucet hot and cold water pipe be replaced?
First to the water of the total gate off, and then depends on what kind of faucet, and some in the wash basin under the screw twisted, so the first screw to twist first, there is a more ancient type is directly twist open The beginning of the faucet can be. The interface rust is difficult to remove: the bathroom faucet in the demolition, at least into the water pipe connection is easy to separate. The kitchen, whether it is the water inlet or faucet with the table connection, the two interfaces are difficult to unscrew.
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Not right
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I did not have the same problem
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Here's the bottom line, as I see it. Shut off the water to the house at the service valve out front or, if that valve doesn't work properly, shut it off at the meter. Get a tubing cutter and cut off the service valve under the sink as close to the valve as you can. Do not use a hack saw, use a tubing cutter. Home Depot sells new service valves that are compression fittings to slip over the pipe coming out of the wall or floor. Take the old valve with you so they can help you with the correct size. You'll need to cut off both valves. When you buy the new valves, buy some new armored hoses to connect your new faucet to the new valves. You'll need a couple of wrenches to install the new valves and hoses, and you may need a basin wrench to install the new faucet. Consider the tools an investment and the valves and hoses maintenance expenses. Once you've done one successfully you'll never be intimidated by that type of job again. Good luck.
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There may be a leading bad, the water is small is not heated. (No ignition)

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