Butterfly Valves Ductile Iron Wafer Type DN630

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100 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. 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.

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

3. Manual Wafer Butterfly Valve Images

 

Butterfly Valves Ductile Iron Wafer Type DN630

 

4.Manual Wafer Butterfly Valve  Specification 

Butterfly Valves Ductile Iron Wafer Type DN630

 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?
3. butterfly valve hydraulic drive device structureThe 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. A section of optical axis is arranged at the end of the driving shaft and is inserted into the end of the manual shaft (matched with the clearance of H11/ H11), and the function is that the manual shaft is concentric with the main drive shaft. In normal operation, the optical axis rotates with the drive shaft, but the manual device does not move. When the hydraulic operation is performed manually or manually from the hydraulic unit, a * * * conversion is required. The utility model is composed of a nut, a hand wheel, a screw rod, a support frame and a shifting device. When the utility model is switched, the hand wheel is rotated and driven by the screw rod to move. A guide rod is arranged on the bracket to make the shift and translation stable.
Q:Why anti condensation of aluminum alloy anti condensation butterfly valve?
High performance materials have a lot of outstanding advantages: such as low water absorption, corrosion resistance, insulation, cold insulation performance, etc., is 4 times the ordinary material butterfly valve.Anti condensation butterfly valve body adopts ultra light aluminum alloy valve body, its weight is only 1/3 of the traditional butterfly valve, the torque is small, the use and installation is convenient, and the corrosion is avoided.
Q:What is the principle of butterfly valve and check valve? Any difference?
Direct water butterfly valve, check valve is to water can not flow valve
Q:Model specification for butterfly valves
Butterfly valve type to clip type:D7A1XR-16 50mm-1200mm D7A1XD-16 50mm-1200mm D7A1XN-16 50mm-1200mm D7A1FR-16 50mm-1200mm D7A1FD-16 50mm-1200mm D7A1FN-16 50mm-1200mm 偏心式 :D73F-16 50mm-300mm
Q:How do you explain A in butterfly valve D37A1?
Represents a seal or lining material symbol.Said sealing ring or lining material with the Chinese phonetic alphabet: B Babbitts D nitrided steel, acid resistant stainless steel H, J L Aluminum Alloy, hard rubber, nylon NL, P leather, SA PTFE, SC PVC, SD bakelite, T copper, TC enamel, X rubber, Y hard alloy
Q:D37A1X9-16CB1: what does this butterfly valve mean?
The model is composed of 7 units, the types of valves (gate valve Z, J, L, Q ball valve, throttle valve, check valve and H valve, butterfly valve, connection mode (D) internal thread 1 thread 2, welding flange 4, 6, 7, the clamp (0) electromagnetic transmission mode 1 solenoid valve, hydraulic, electric and hydraulic turbine are 2, 3, 4 and 5 gears, bevel gear, pneumatic hydraulic, 6, 7, 8, 9) pneumatic and hydraulic, electric, structure (straight or DC type 7,1 on behalf of the center plate, vertical type A (A) and LT X9) on behalf of a sealant is heat-resistant rubber, kg 16 kg, C represents the body material of carbon steel WCB, B1 on behalf of the valve plate is made of ductile cast iron plating)
Q:What is the difference between turbine butterfly valve and flanged butterfly valve?
The worm gear is the driving mode and corresponds to the handle; the flange is connected and corresponds to the clamp. Flange worm valve is generally, the handle of the butterfly valve
Q:Butterfly valve D71X-10 and butterfly D371X-10 what is the difference?
Different structure. The handwheel (or handle) of the D71X-10 is mounted directly on the valve stem, and the D371X-10 is operated by means of a bevel gear in combination with the worm, and the handwheel is mounted on the worm.
Q:What is the D37-10Q butterfly valve?
The model is too simple, right D37A1X-10QB1, D: valve, 3: turbine head, 7: on the vertical plate clamp, A1: type A, X: type of rubber seat, 10: nominal pressure valve Q: is ductile iron, B1: plate is made of ductile cast iron
Q:How is the lug butterfly valve connected to the flange?
Lug type butterfly valve is also called a single flange type, that is, with a flange on the valve body, usually installed at the end of the pipe, and even the method is 1: double bolt lock on the valve body 2: into the flange 3: lock nut

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