Butterfly Valve Stainless Steel Threaded Directional on Sale Made in China

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$50.00 - 3,000.00 / pc
Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
100 pc
Supply Capability:
10000 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

 

Butterfly Valve Stainless Steel Threaded Directional on Sale Made in China

Butterfly Valve Stainless Steel Threaded Directional on Sale Made in China

 

4.Manual Wafer Butterfly Valve  Specification

 

 Butterfly Valve Stainless Steel Threaded Directional on Sale Made in China

 

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:How do you calculate the pressure difference between the front and rear of the valve?
the preset pressure after the valve, thus maintaining the dynamic pressure balance valve, and non compressible medium, mainly for the purpose of regulating the flow, especially in the petrochemical industry, power industry, if the specific calculation of a valve is more difficult, but a lot of data will provide the valve valve opening and flow of the corresponding graph, the landlord is really interested in learning more, can go to the Xinhua Bookstore to find the valve selection manual valve related content, which will introduce calculation method.
Q:What does "1/2" mean on the valve?
Indicates that the ends of the valve are 1/2 inches in diameter. 1 inches is converted to metric system of 25.4 millimeters.
Q:What are the main equipments for valve production?
Press machine, CNC lathe, instrument lathe, drilling machine, machining center, assembly line, pressure test bench, plane, measuring instruments, etc.
Q:Valve should be strictly marked according to the direction of instructions and media flow direction to determine the installation direction,
Strength of the corresponding meaning is: the valve used to connect the original way of normal connection, such as silk mouth with the same specifications of the silk mouth connection. You can't connect the wires with different sizes.The pipe clamp is fixed in the counterpart application, from the interface at 200mm was measured with a ruler, when the nominal diameter is less than 100mm, the tolerance of sigma <1mm, when the nominal diameter is greater than 100mm, tolerance for a <2mm, but the length of tolerance is less than 10mm, no strong counterpart or eccentric pad counterpart.
Q:What are the definitions of internal, external and leakage valves?
The leakage within the valve that is the reason of erosion wear medium makes the valve is not closed tightly, even if the valve screw (stem) screwed in place, because there is still a gap between the spool and the valve body, the medium can flow past.
Q:What's the difference between valves and valves without valves?
The advantage of carrying valves and venting valves is that they control the amount of exhaust and prevent other fluids from flowing out.
Q:What do the Z, J, H and D represent in the valve type?
7, pairs of clipsThe transmission modes of valves are code 9, 6 and 3 respectively:9, electric, 6, pneumatic, 3, turbo wormBody material code Z, K, Q, T, C, P, R, V, respectively:Grey cast iron, malleable cast iron, ductile iron, copper and alloy, carbon steel, stainless steel, chrome nickel chromium nickel molybdenum stainless steel, chromium molybdenum vanadium steelSeat seal or lining code R, T, X, S, N, F, H, Y, J, M, W, respectively
Q:Which valves are installed in a directional manner?
Regulating valve, stop valve, eccentric butterfly valve, check valve, one-way valve, solenoid valve, pressure reducing valve, drain valve and drain valve. Needle core valve, V ball valve, part of the ball valve, there is flow.Few. Such as floating ball valve, the central butterfly valve does not flow requirements. In general, if the regular manufacturers of valves, flow direction will indicate the flow of medium, to get the valve can see.
Q:Who knows what the DE stands for in the valve DE50?
Back valve, DE50 balance valve, DE25 stop valve, DE75, what do you mean by "de"?Diameter DEThe diameter of a general plastic tube is indicated by DE in EngineeringNominal diameter is the size of all piping accessories in the piping system. The nominal diameter is a convenient round integer for reference and is not strictly related to the processing size. The nominal diameter follows the letter "DN" followed by a number sign.
Q:G what's the meaning of the valve?
Valve with other function or with other special mechanism, fill in a Chinese language before the valve type code number

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