Butterfly Valve Double Flanged Eccentric Rubber Seated
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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
1)Disc has two-way bearing, perfect seal, without leakage under the pressure test.
2)Flow curve tending to straight-line. Excellent regulation performance.
3)Various kinds of materials, applicable to different medium.
4)Long service life. Standing the test of ten thousands opening and closing operation.
5)Can be used in cutting off and regulation medium
3. Manual Wafer Butterfly Valve Images：
4.Manual Wafer Butterfly Valve Specification：
Size | DN40-DN1200 |
End flange | ANSI B 16.1, EN 1092, AS 2129 |
Face to face | ANSI B 16.10; EN 558-1 Series 20 |
Top flange | ISO 5211 |
Normal Pressure | DN40-DN600 PN1.0/1.6MPa (150/200PSI) DN700-DN1200 PN1.0MPa (150PSI)
|
Body | CI/DI/WCB/ALB/CF8/CF8M
|
Disc | DI/ALB/Rubber lined Disc/ 1.2501/CF8M/1.4529/CF8/Hastelloy Alloy/Monel |
Stem: | 416/304/316/431/17-4PH |
Seat | NR/Hypalon/EPDM/Neoprene/NBR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White NBR/White EPDM/EPDM (NSF)/PTFE |
Suitable Temperature | -40c~80c
|
Apply | Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc. |
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.
- Q:Should I connect the butterfly valve before and after the pump? Or gate valve?
- Personally believe that import and export butterfly valve or gate valve can be, or other valves. One principle, easy installation and easy maintenance.As for how much pressure can be selected according to the size of the pump flange to set the general small caliber pump are 1 and 1.6 pressure general, unless you are a super high pressure multi-stage pump, generally 1 flanges fully meet the requirements of pump working pressure is generally not too high, living above the water temperature will not exceed 40 C, so you choose the space is still very large.
- Q:Can the inlet and outlet of butterfly valve be reversed? Why? What will happen if the reverse gear is installed?
- Our factory butterfly valve has two-way sealing, can be installed, and will not leak. If there is an arrow above the butterfly valve is one-way seal, that is, can not be installed. One way sealing will cause leakage. If you have any other questions, you can bring them up. Let me help you with that
- Q:what are the step i need to do so i can change the valve seals my truck has been smoky.,,, any websites i want todo it myself... 1989 chevy silverado 2500 350 engine 5.7L
- if the engine smokes only when you have let it sit a little while(over nite or so) and then it clears up after a min. or 2 of driving...its the seals .chevy 305/350 are known for that
- Q:Three eccentric hard sealing butterfly valve, why not fit in the end of the pipe?
- Three eccentric hard seal butterfly valve quality standards, up to zero leakage, but you mean the end of the direct discharge?If so, that's OK. First you have to calculate how much the pipe fluid pressure is.For example, the pipe fluid pressure is highest and the pressure is 1.6MPa (16 kg)Should choose three eccentric hard seal butterfly valve should be pressure 1.6MPa (16 kg)If you worry, optional 2.5MPa (25 kg) will not leak!Answer: three eccentric hard sealing butterfly valve can be installed at the end of the pipe
- Q:What does the model D373H-16C of butterfly valve mean?
- For example: Z543H-16C bevel gear flange plate valve, nominal pressure 1.6MPa, the valve body is made of carbon steel valves valve name according to the mode of transmission, connection form, structure, lining material and type name. But here in the name of the content shall be omitted: (1) the connection form: "flange" (2. Structure: a): valve "rod" and "flexible" and "rigid" and "single gate"; B: "straight" stop valve and throttle valve; C: ball "floating" and "one-stop"; D: butterfly valve "vertical plate type"; E: the diaphragm valve "roof"; F: Cock "filler" and "one-stop"; G: check the "one-stop" and "single"; H: "safety valve is not closed. (3) the valve seat sealing surface material in the material name Said. I have just engaged in the valve industry, mainly to do www.ssfmsh traps, but also hope that we learn from each other and make progress together
- Q:What is the butterfly valve
- From the working principle of double butterfly valve can be seen that the operation is simple and easy to use, almost no wearing and maintenance compared with traditional ingredients.
- Q:What's the difference between an electric two position control valve and an electric butterfly valve?
- Double switch electric butterfly valve, electric butterfly valve is usually said, namely the electric butterfly valve in the electronic case can achieve fully open or fully closed precise place to stop, not directly with the pipeline system flow feedback device for regulating the flow of accurate interaction.
- Q:Butterfly valves are widely used in 2.0MPa below the pressure and temperature of not more than 200 degrees of various media, right?
- 3. kinds of butterfly valve:According to the connection mode: flange type, clip type.According to the material of sealing surface, soft seal and hard sealing.According to the structural form, butterfly valves can be divided into the following types:Plate typeInclined plate typeOffset plateLever type4. butterfly valve features:(1) the structure is simple and the shape is small. The utility model has the advantages of compact structure, short structural length, small size and light weight, and is suitable for large caliber valves.(2) the resistance of the fluid is small, and when the valve is fully opened, the valve seat passage has an effective circulation area, so the fluid resistance is smaller.(3) open and close, convenient and quick, good adjustment performance, butterfly plate rotation 90 degrees can be completed headstock. By changing the angle of rotation of the disc, the flow can be graded.(4) the opening and closing moment is smaller, because the butterfly plate on both sides of the rotating shaft is basically equal to the medium, and the opposite direction of the torque is generated, so that the opening and closing is more labor-saving.(5) low pressure sealing performance, sealing surface materials generally use rubber, plastic, sealing performance is good. Limited by the material of the sealing ring, the pressure and the temperature range of the butterfly valve are smaller. But the use of hard sealing butterfly valve pressure and temperature range has been greatly improved.
- Q:Whenever sports cars are referred, people talk in terms of 'valves'. ex: v8, v12 etc. What does this all mean? Also they sometimes say that a v8 makes a great noise. why? How does the number of valves effects the performance? Many thanks.
- When talking about car engines, references such as v4, v6, v8, v10 and v12 are not for the number of valves. it is for the number of cylinders. The more cylinders that an engine has, the more fuel it consumes and most of the time, the more horsepower it can make. There are exceptions to this though. Regarding the noise of the engine, i would agree that a v8 sounds very good when it is roaring. Valves are actually the openings for fuel to get into the cylinders and the exhaust to come out from. Most modern engines have two valves for incoming fuel and two valves for the exhaust making a total of four valves per cylinder. hope that clears it for you
- Q:Not the cold and hot water shut off valves. The one with a tiny handle and it looks like a T. what does it do? should I mess with it?
- Sounds okorder /
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Butterfly Valve Double Flanged Eccentric Rubber Seated
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 500 set
- Supply Capability:
- 5000 set/month
OKorder Service Pledge
OKorder Financial Service
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