Butterfly Valve Worm Gear Actuated Flange Triple Eccentric
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- Supply Capability:
- 1000 pc/month
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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：
4.Manual Wafer Butterfly Valve Specification：1) 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: The difference between butterfly valve and gate valve
- Butterfly valve role, butterfly valve is used to open and close disk type reciprocating rotation of about 90 degrees to open, close or adjust the flow of a 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.
- Q: I have a 1993 Oldsmobile Cutlass Supreme and I think I have the case of the blow-by. The engine had high mileage, but was rebuilt b/c it stalled while driving. 3.1L V6 gasoline engine. The fuel filter and the fuel pump are brand new. Now we have the same problem a few months later. It stalls while driving. Its been sitting a while and won't start by itself, so I pulled off the air intake hose off of the air filter to spray starting fluid into it. I noticed oil puddled in the air intake hose, so I looked for the PCV valve on the rocker cover. There is a tube going from the air-intake hose to the rocker cover. I popped out the tube from the rocker cover and there is no PCV valve. Just tube. Is that where the PCV valve is supposed to go? If not, where can I find it on the engine? And could that possibly fix the blow-by and the stalling engine? I'd appreciate any help. Thanks in advance.
- top of the manifold
- Q: What is the effect of nylon coating on butterfly valve plate? Thank you
- Mainly media will not be contaminated by rust on the body, you should say that the central soft sealing butterfly valve, the central valve is generally cast steel or cast iron material, so useNylon coatingLining up. There are soft seals, sealing performance is relatively high
- Q: What does butterfly valve do?
- 5, connections are flanged, wafer connections, welded connections and lugs on the clip connection. ?Drive in the form of manual, worm gear, electric, pneumatic, hydraulic, electro-hydraulic linkage actuator, can realize remote control and automation.Advantages of butterfly valves1, opening and closing convenient, fast and labor-saving, fluid resistance is small, you can often operate. ?2, simple structure, small volume, light weight. ?3, to transport slurry, accumulation of fluid in the pipe outlet at least. ?4, under low pressure, can achieve a good seal. ?5, good regulating performance.Disadvantages of butterfly valve1, use pressure and working temperature range is small. ?2, poor sealing. ?Butterfly structure can be divided according to the bias plate, vertical plate, inclined plate and lever type. According to the form of sealing can be divided into soft sealing type and hard sealing type of two. The soft sealing type usually adopts rubber ring seal, and the hard sealing type usually adopts metal ring seal. ?By connection type can be divided into flange and clamp connections; press can be divided into manual transmission, gear transmission, pneumatic, hydraulic and electric types.
- Q: Gate valve, butterfly valve and so on can do the valve so that?
- Yes, but the accuracy of the adjustment is not high. Just about. To adjust the flow, please use flow control valve.
- 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: Butterfly valve sealing material has several?
- Butterfly valve sealing material has nine kinds:X1 (natural food gum);X2 (Heipalen);X3 (ethylene propylene rubber);X4 (chloroprene rubber);X5 (Ding Qing rubber);X6 (abrasion resistant rubber);X7 (fluorine rubber);X8 (silicone rubber);X9 (heat resistant ethylene propylene rubber).Also known as butterfly valve, control valve has a simple structure, can be used for low pressure pipeline valve switching control is closed parts (disc or disc) is a disk, around the valve axis to achieve the opening and closing a valve, the valve can be used to control the flow of air, water, steam steam, all kinds of corrosive medium, mud, oil, metals and radioactive liquid media and other types of fluid. On the pipeline, mainly from cutting and throttling. 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.
- Q: Which is expensive, butterfly valve?
- Gate valve and butterfly valve can not simply take the price there to compare, look at the actual design requirements of the project. General small caliber are selected by the valve, because of better sealing performance, service life is long, the maximum diameter of valve is usually choose to use the butterfly valve to the pipeline DN800800 above, because the valve is cheap, the price is only half of the large diameter valve. Also some pipes from the use of quality point of view, will choose the gate valve. How to use it, please mark the map
- Q: Which is more expensive, gate valve or butterfly valve?
- Same diameter, the same material, with the pressure level, the weight of the gate valve is much heavier than the butterfly valve, about 2 times of the butterfly valve!
- Q: Butterfly valve structure and working principle
- Butterfly valve structure: Center to clip butterfly valve, single eccentric butterfly valve, double eccentric butterfly valve, three eccentric butterfly valve
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Butterfly Valve Worm Gear Actuated Flange Triple Eccentric
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 1000 pc/month
OKorder Service Pledge
OKorder Financial Service
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