Butterfly Valves Ductile Iron Wafer Type DN530

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200 set
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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. 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 

Design & Manufacture acc. to API 609,MSS SP-67,BS5155,BS EN593.

Face to Face  acc. to DIN3202,API609,MSS SP-67,BS5155,BS EN558.

Top Flange acc. to ISO5211.

Pressure test acc. to  API598,BS EN12266-1,DIN3230,BS5155.

Side Flange acc. to DIN2501,ANSI125/150,AS2129,BS4504,BS10D&E,JIS10K

A butterfly valve consists of body ,stem ,disc , actuator (manual actuator, worm-gear actuator , aerodynamic actuator or electric actuator) , and wafer type butterfly valve can implement the process for turning on turning off and regulating the flow by the circumrotation of stem and disc  that is droved by actuators.
3. Manual Wafer Butterfly Valve Images

 Butterfly Valves Ductile Iron  Wafer Type DN530

Butterfly Valves Ductile Iron  Wafer Type DN530

 

4.Manual Wafer Butterfly Valve  Specification: 

Size:

DN50-DN1000

End flange:

ANSI B 16.1,EN1092,AS2129

Face to face:

ANSI B 16.10

Top flange:

ISO 5211

Normal pressure:

PN1.0/1.6MPa(150/200PSI)

Body:

CI/DI/WCB/ALB/CF8/CF8M

Disc:

DI/ALB/Rubber lined Disc/1.2501/1.4529/CF8/Hastelloy Alloy/Monel

Stem:

410/416/304/431/17-4PH/316/monel

Seat:

NBR/Hypalon/EPDM/Neoprene/NR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White EPDM/EPDM(NSF)/PTFE

Suitable temperature:

-10~120

Medium:

Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc. 

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 hydraulic butterfly valves work?
The valve hydraulic device is mounted on the valve drive shaft. The driving shaft of the valve is fixed with a transmission spline, and the crank (with an outer spline) is sleeved on the driving shaft. When the hydraulic system works normally, through the gear sleeve, the transmission spline is connected with the crank. Thus, the hydraulic cylinder drives the crank, and the spline on the crank passes the torque to the transmission spline by means of a gear sleeve. Because the driving spline is fixed on the driving shaft, the driving shaft rotates and drives the valve plate to start and close. Sorry, the picture doesn't come up
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:Butterfly valve in use when should pay attention to what problems?
After the last in the pneumatic butterfly valve after use, also need to be cleaned immediately after the valve is closed, should use soft cloth to clean the valve, which may have some impurities, dirt removal, and oil lubrication, so it can better guarantee the use of the next.
Q:Where are the exhaust valves, mud valves and butterfly valves?
The exhaust valve is suitable for the pipeline with working medium, so as to improve the efficiency of the water conveyance equipment and protect the pipe from deformation and rupture. Sludge discharge valves are suitable for use in floating waste water treatment plants, such as gypsum. Slag, scale power stations, smelters, sugar mills.
Q:Why do you need two butterfly valves in the water well?
Check the water gauge and check valve on both sides to facilitate the maintenance and replacement of water meter and check valve.
Q:Which is better, the round two lobe butterfly valve?
Can be directly installed in the ventilation pipe, connected with the wind pipe, used to control the speed, adjust the indoor air, the double structure diagram can reduce the space length of the blade is unfolded, and also has the characteristics of small airflow resistance, convenient adjustment etc.
Q:What is the meaning of the D341*5-10 / 16ZB1 turbine butterfly valve flange said?
D341 is flanged connection center plate butterfly valve under pressure 1.0MPa-1.6MPa ZB1 rubber soft seal
Q:Butterfly valve D71X-10 and butterfly D371X-10 what is the difference?
One more 3 in D71X-10 stands for adding a worm gear to the valve. What are the same, the difference is driven by the handle into the drive, gear drive, worm gear drive for large caliber butterfly valve a little less, because the valve torque is big, big, hard to handle and can rotate, and if the worm, you can turn a few laps handwheel. If there are other questions, we can continue to ask questions, the city butterfly valve manufacturers
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:Butterfly valve model D373F-16C, ask God answers
D - butterfly valve, 3 - turbine rotation, 7- clamp type, 3- eccentric F - sealing surface for PTFE sealing, 16- bearing pressure 16KG, C - body material cast steel

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