• Ductile Iron Butterfly Valve Of Good Quality Top on Sale System 1
  • Ductile Iron Butterfly Valve Of Good Quality Top on Sale System 2
  • Ductile Iron Butterfly Valve Of Good Quality Top on Sale System 3
Ductile Iron Butterfly Valve Of Good Quality Top on Sale

Ductile Iron Butterfly Valve Of Good Quality Top on Sale

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Tianjin
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Min Order Qty:
50 set
Supply Capability:
1000 set/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

 Ductile Iron Butterfly Valve Of Good Quality Top on Sale

Ductile Iron Butterfly Valve Of Good Quality Top on Sale

4.Manual Wafer Butterfly Valve  Specification

 

1)Size: DN40-DN1400 
2)Material:body-CI/DI/WCB/SS 
disc:DI/CF8/CF8M/C95400 
3)Professional Maufacturer for more than 10 years

4) 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:What does valve DN50/80 mean?
DN50/80 refers to the size of the valve. That is, the circulation diameter is 50mm/80mm.
Q:What do letters represent in the QF-2 and PX-32 valve models?
This is the material code, specific check: valve code. Just OK
Q:How does the valve open?
Usually along the pipe is open position, you this is to turn 90 degrees, that is, open position.
Q:Valve legend
This should be part of the thermodynamic device that represents the gate valve or butterfly valve
Q:What is the purpose of the valve?
6. Indicate and adjust the level of the liquid. Such as liquid level indicator, liquid level regulator, etc..7, other special uses. Such as temperature control valve, over-current protection, emergency shut-off valve and so on. In the above valves, the valve used to connect and cut off the medium flow in the pipeline, the use of the total number of about 80% of the total number of valves.
Q:How to identify the good or bad of the valve, without pressure test and instrument?
First, the appearance, two according to the standard to see flange thickness, outer circle, wall thickness and other dimensions are standard, 3 see details.
Q:1/2, what does 1/4 valve mean? I don't understand. What does this number mean? Have a valve to introduce me, do not copy a pile of online introduction, I want to concise
I have to answer a simple 1/2 1/4 is American Standard valve diameter to the national standard to calculate it is 1/2=DN15 1/4=DN8Also on the valve size of the meaning of the Wenzhou essence valve factory for you to answer
Q:Where is it installed, what is the role, what is the material, and are there other alternatives instead of this effect?
Mainly from the role of sealing, to prevent leakage of the valve conveying medium, stuffing commonly used PTFE, graphite, asbestos packing three.
Q:What does 3/4''mean in the name of the valve?
3/4''is the valve diameter, said 20MM, inches, equivalent to DN20 of the valve, is also said to be the 6 interface we say old foreman
Q:What valve is the YQZ45X-16Q?
Specifically, YQ usually is the enterprise code, Z valve, 4 representative flange, 5 representatives of the dark bar, X (soft) rubber seal (gate coated with rubber material), nominal pressure 16 representative (PN) 1.6Mpa, Q on behalf of the valve body is made of ductile cast iron. If you add the valve bore (DN), it will be more detailed.

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