Butterfly Valve Ductile Iron BS5155 On Sale

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10 set
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10000 set/month

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1. 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 . 

2.Main Features of the Butterfly Valve 

(1) 90° movement for full open/close position. 

(2) Excellent control characteristics.Tight shut-off even after innumerable operations.

(3) Installation cost considerably reduced because of very low weight and compact design.

(4) Longer life and reliable service with minimum component wear.

(5) Renewable seats. No supplementary gasket required with the adjacent pipework.

(6) Body & Stem totally protected from service fluid.

3. Butterfly Valve Images

 

 

 Butterfly Valve Ductile Iron BS5155 On Sale

 

 Butterfly Valve Ductile Iron BS5155 On Sale

Butterfly Valve Ductile Iron BS5155 On Sale

4.Butterfly Valve  Specification:

BODY

DISC

STEM

SEAT

BUSHING

MATERIAL

WORKING PRESSURE

CAST IRON

DUCTILE IRON WITH NICKEL PLATED

CARBON

STEEL

NR

-20-+85

LUBRIZED

BRONZE

DUCTILE

IRON

ALUMINUM BRONZE

STAINLESS
STEEL

HYPALON

-18-+135

INSTANTANEOUS

-18-+149

PTFE

ALUMINUM
BRONZE

STAINLESS STEEL

EPDM

-45-+135

INSTANTANEOUS

-50-+150

CARBON

STEEL

CARBON
STEEL

NEOPRENE

-7-+193

INSTANTANEOUS

-7-+107

STAINLESS STEEL

NBR

-12-+82

INSTANTANEOUS

-12-+93

WEAR-RESISTANT RUBBER

-10-+50

VITON

-23-+150

HEAT-RESISTANT RUBBER

-20-+150

PTFE

+10-+150

 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.

 3. What is the working principle of manual wafer butterfly valve?

 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:What's the use of fire butterfly valve?
You should ask the signal butterfly valve, butterfly valve in the fire signal system which is a monitoring alarm signal, its purpose is to ensure that the valve has been opened in the daily state, to prevent misuse operation was closed, thus affecting when accidental fire extinguishing. Therefore, it is necessary to set up the signal valve!
Q:How can I get the fire signal butterfly valve?
At the input end of the input module, some resistors or terminals are added to the product
Q:What is the medium flow rate when the centerline butterfly valve is fully open?
The pressure test of the central butterfly valve is carried out at each station.Basis:1) GB/T12238-2008 flange and clamp connection elastic seal butterfly valveRules: butterfly valve must be carried out by factory inspection and testing, inspection qualified before leaving the factory.2) CJ/T 261-2007, butterfly valves for water supply and drainageRules: each product shall be inspected by factory and quality inspection department.
Q:How to use the fire butterfly valve properly?
Clamp and groove type and signal butterfly valve, the first two have what requirements of installation, the operating handle can rotate to open and close the valve installation, signal wiring, mouth down, to prevent water and caused a short circuit three line grounding and alarm line for leakage protection and monitoring of the valve open or closed, general are in line with the alarm valve or flow indicator matched with water, indicating the spacing of not less than 300mm, no other special requirements
Q:What are the major disadvantages of butterfly valves?
Shortcoming:A. operating torque is large, such as larger diameter or high pressure, it needs to be equipped with larger actuators;B. leakage is large, ordinary type is 2%C;C. as the adjustment of some butterfly valve, its rotation angle is limited to 60. Adjustable range is small.
Q:Electric butterfly valve (not take the lead) what do you mean?
Electric butterfly valve, as its name implies, consists of an electric actuator and butterfly valve, and the customer does not take the lead, that is, without the electric actuator, only the butterfly valve can be provided.
Q:What's the difference between butterfly valves and check valves?
Butterfly valve is manual, only switch function.The check valve is an automatic valve, which prevents backflow of the pipe medium.
Q:Three eccentric hard sealing butterfly valve, why not fit in the end of the pipe?
Louzhu asked extremely, since it is hard seal, it is bound to guarantee long-term work after zero leakage, or should be configured double eccentric soft sealing valve is more reasonable.
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:How do the butterfly valves d341 and d343 differ in appearance?
Under normal circumstances, 41 is soft seal body, 43 is hard sealing valve body

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