ISO Standard Eccentric Double Flanged Rubber Seal Butterfly Valve

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5 set
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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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Q:Home faucet with a few years, become anxious, no longer soft, what is going on?
This is caused by the clogging and damage of the bubbler after a period of use. The general halter is also used for almost a few years. If you want to use a long life, for many years will not be bad, it is necessary to choose a good high-level water tanker. I use the German Bravat, the water is very rewarding 100 ghoun save the province to find the silent, and very comfortable to use up. After 6,7 years, and there have been no problems, the surface is still very bright and beautiful.
Q:Installing new faucet with sprayer into old basin?
The overflow is there so that if your kitchen sink clogs then it does not fill up your dishwasher with nasty sewer water. If you take the overflow (called an Air Gap) out then you would have dirty nasty water going into your dishwasher with your dishes. You can drill a hole in the sink but I warn you that this is difficult to do. I would recommend purchasing a pull out sprayer faucet. It's more costly but will save you the trouble of drilling a hole. They also make faucets that have the sprayer hole built in to the body of the faucet but this looks a little weird. If you get the pull out sprayer then you will like it and it looks nice too. So, just shell out a little more money and get a good faucet that looks good too!
Q:Can the bubbler be installed on the faucet at home?
The bubbler has two kinds of inner wire and outer wire, which is determined according to the silk teeth of the faucet nozzle, the general diameter of the bubbler is 23mm, the diameter of the inner wire is 21mm, Can be installed on, but to do with each of the leading length of the silk teeth are the same as the more difficult situation. After the general installation will have some harm to the edge of the valley, but do not worry, this reason will not lead to leakage.
Q:Wash basin basin inside the two pipes how to split
First remove the two pipes, and then in the basin below the fixed faucet can be removed on the red cap.
Q:Understand basin faucet installed?
There is a brand called Wei Sha bathroom, their products are very carefully installed steps introduced, you must be able to help you a lot of busy!
Q:How to choose the kitchen sink, faucet
Sink material: ceramic / glass porcelain: the original popular in the bathroom pool and fixed device used, now use the kitchen. Advantages: hard anti-penetration, and a glass-like luster. Disadvantages: glass porcelain structure itself is suitable for large sinks, such as kitchen with double sink. Stainless steel: stainless steel was originally a cheap rough sink material, and now there are improved varieties, some high-quality stainless steel sink thicker than its predecessors more anti-noise. Advantages: stainless steel anti-corrosion, to the kitchen to add luster. Disadvantages: stainless steel can be scratched, the thinner varieties, washing the greater the noise when flushing. Artificial stone: According to the production process of different manufacturers, artificial stone made of polyester resin and different ingredients. Artificial stone can also be customized. Advantages: easy to take care of artificial stone, the appearance of a beautiful stone. And a variety of colors - bright colors and soft colors, there are a variety of patterns imitation stone effect, while not easy to scratch fragmentation. Because the color is implanted inside the material, so burn the bad place easier to polish. Artificial stone sink and artificial stone countertops with seamless, easy to clean, not easy to fouling. Disadvantages: artificial stone and granite almost expensive. It will burn broken. Faucet: Today's faucet child dust powder is no more than the previous pattern, the quality is better. Higher and longer water pipes and telescopic faucets help you to quickly and easily complete a variety of household chores, such as pouring in the fries, or just a washing sink. Hard brass and cast iron are high quality water pipes, but their price is also high. Carefully use those plastic shells and plastic knobs. The kind may be cheap, but can not guarantee durability, but also easy to wear.
Q:The drain of the refrigerator is plugged or unplugged
The plug is also leaking, and inserted to prevent the fall into something difficult to take out.
Q:Faucet, basin and laundry pool where to sell?
Think about buying online, online to buy the price is relatively cheap
Q:Will the normal household kitchen faucet, 24 hours uninterrupted water, 10 days to let go of the number of tons of water.
This is hard to say, the specific water pressure, the size of the leading mouth, generally 24 hours without interruption of water, 10 days to let go there may be about 300 tons of water it
Q:How to clean severe yellowing from underneath the bathroom faucet assembly?
Chances are its from the pipe dope or plumbers putty that was used. Treat it like a greasy stain and use some baking soda, some cleaner like Greased Lightening or Blue Wolf. You can also try putting some hydrogen peroxide on it over night and covered with a rag or some plastic if its not granite or marble. Should clean up fine then. Good luck!

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