Butterfly Valve Ductile Iron Cast Iron High Quality Can be Customised

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1. Manual Wafer Butterfly Valve DescriptionThe products are widely used in industries such as water projects, urban water supply & drainage, sewage treatment, eletric power, petroleum, petrochemical, heat supply, shipbuilding,medicine and metallurgy. Equipment used in regulating or cutting off medium in pipeline.

 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 Ductile Iron Cast Iron High Quality Can be Customised

4.Manual Wafer Butterfly Valve  Specification

Size: DN40-DN1400 
Material:body-CI/DI/WCB/SS 
disc:DI/CF8/CF8M/C95400 
Professional Maufacturer for more than 10 yearsSize Range 1"~6"

Maximum operating preeure 10bar (at 20°C)

Recommended working pressure 6bar (at 20°C)

General temperature range -10°C~+95°C

Standard type ISO2037/BS4825-1/AS1528-1

End connections butt weld (standard) for inch tubing (O.D.tubes)

STAINLESS STEEL HYGIENIC BUTTERFLY VALVE

sanitary 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:CAD drawing of butterfly valve
Your question is very international. Ha-haThis method of painting is not clear in one or two words.First you'll know the map, then you'll use CAD, so the two will add up.Guess you will.
Q:What does the butterfly valve model d344h, d345h, d346h, d347h mean?
According to the international standard of the letters and numbers apart to explain D344H D is a unit of butterfly valve, two unit 3 is driving mode: turbine, three unit 4 connection: flange connection, four unit 4 Structure: seal type linkage, five unit H sealing material: Cr13 stainless steelD345H compare yourself to the above. Unit 5 four is a sealed, single eccentric structureD346H four unit 6 is an unsealed center vertical plateD347H four unit 7 is unsealed double eccentricIn general, there is only one difference between them: the structural form is different!
Q:What do you mean by manual butterfly valve DN100 D341X-10?
DN100 refers to the inside diameter of the butterfly valveD stands for butterfly valves3 represents the turbine drive4 represents the flange connectionThe 1 represents straight throughX is the representative of the Dengqen rubber seal10 represents the pressure of 1.0Mpa (10 kg)Manual butterfly valve, also known as turn over plate valve, is a simple structure of the control valve, but also can be used for low pressure pipe medium switch control. Butterfly valve refers to the closure of parts (valve or butterfly plate) as the disk, around the valve shaft to achieve rotation and closing of a valve, the main cut off on the pipe and throttling role. Butterfly valve headstock is a disc shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or regulation. Butterfly valve used in furnace, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation environmental protection engineering system, conveying a variety of corrosive and non corrosive media pipeline, used to adjust and cut off the media flow.
Q:Butterfly valve in the use of the difference? Caliber?
Role of butterfly valveButterfly valve is to use disc type to open and close parts reciprocating reciprocating about 90 degrees to open, close or adjust the flow of medium valve. The butterfly valve has the advantages of simple structure, small volume, light weight, material consumption, installation of small size, the driving performance of torque is small, simple operation, rapid, high chemical corrosion, and can also have good flow control function and closure characteristics, the use of butterfly valve is very extensive. Its varieties and quantities are still expanding, and the development of high temperature, high pressure, large caliber, high sealing, long life, excellent regulation, as well as multi-function development of one valve. Its reliability and other performance indicators have reached a high level. Disadvantages, there is a certain resistance to the medium.Gate valves are more used in steam pipes and large diameter water supply pipelines, because of the general requirements of fluid resistance is small, the use of gate valve.Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open. Need a higher installation space, the valve sealing surface has a certain self sealing capacity, its spool by the media pressure closely with the valve seat sealing surface contact, to achieve tight leakage. Wedge gate valve spool angle is generally 3~6 degrees, when forced to shut down excessive or temperature changes of the valve core is easy to die. Therefore, high temperature and high pressure wedge gate valve, in the structure have taken certain measures to prevent spool stuck. The valve in the opening and closing valve and valve seat sealing surface contact and mutual friction is always so easy to wear sealing surface, especially in close off the valve, the valve before and after the great pressure, sealing surface wear is more serious.
Q:how to get a valve out of combustion chamber?
The valve head is larger then the valve port, so it's not coming out of there. Pull the head.
Q:What is an ERG valve?
If initially the codes confirmed that the EGR valve grew to become into defective and grew to become into no longer replaced this might smash the o2 sensor. whilst the EGR is caught open simply by fact of carbon strengthen the engine is taking in extra air it is coming from the blistered gases out of the exhaust and re burning them interior the process the EGR. The O2 sensor will examine this gases passing interior the process the exhaust and point out a lean mix of gasoline and could sign the ECM to strengthen the gasoline to the engine.consequently after a time of employing with mistaken mixtures the o2 sensor will fail. My suggestion is to change the EGR and the O2 sensor then highway try the vehicle.then have the codes rechecked. additionally if the engine isn't working mushy this might reason the transmission to act up.verify that the vacuum hose is linked to the modulator valve on the decrease back of the transmission. some transmissions have a working laptop or computer on a separate circuit interior the device and if the engine isn't working solid computer will p.c.. up the incorrect sign and transmission won't shift properly.. solid good fortune oh and the vehicle ECM or computer isn't your difficulty.
Q:Tight valves?
Chev engines have hydraulic lifters, keeping the valves adjusted correctly at all times. 20 lbs isn't much to worry about anyway, but if you want dump a little oil (about a tablespoons worth) into that cylinder and recheck it. If the compression jumps up, then your rings are getting weak. If not, you may have a leaky valve.
Q:Do you use the straight stem butterfly valve in the fire fighting engineering?
Bar valve bar, did not hear the bar with butterfly valve, ah, there are pairs of folder and hand wheel type bar
Q:Does the pneumatic butterfly valve need electricity?
Are pneumatic, and directly rely on gas control, the most important thing is that the gas, then certainly have to take control of electricity!
Q:What's the difference between the three eccentric butterfly valve and the two eccentric butterfly valve?
Double eccentric butterfly valve refers to: valve plate and central axis partial, simply said that there are two parts of the butterfly valve.Three eccentric butterfly valve, there are three places are biased

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