Ductile Iron Butterfly Valve Of Good Quality From China

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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 From China

Ductile Iron Butterfly Valve Of Good Quality From China

4.Manual Wafer Butterfly Valve  Specification

 Ductile Iron Butterfly Valve Of Good Quality From China



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: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 do you mean by "P54" in the valve z962y-p54 100V?
P54 is the body temperature, heavy rain or equal to 545 degrees, 100V is 10Mpa, that is 100 kilogramsThere are all the valves on the nameplate
Q:What are the types of valves?
1.2.3 classification by body materialx09 (1) non-metallic material valves: such as ceramic valves, glass fiber reinforced plastic valves, plastic valvesx09 (2) metal valves: such as copper alloy valves, Aluminum Alloy valves, lead alloy valves, titanium valves, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low-alloy steel valves, high alloy steel valves.x09 (3) metal body lining valve: such as lining lead valve, lining plastic valve and lining enamel valveHa ha, I answered it only a while ago
Q:Which valve can play a good regulatory role?
A wide range of valves, the function is different, although like conventional butterfly valve, ball valve can play a regulatory role, but their role is not linear, so if you need to adjust the precision of the valve, it is best to select the control valve.
Q:Several problems about valve parameters
FV or LV on the flow chart, which represents the instrument bit number, FV is flow valve, and LV is level valve.The valve on the nameplate CV value, it is a measure of the size of the valve flow, it is the concept of 40 - 60 degrees Fahrenheit in the water, the pressure drop of 1 psi, in a valve opening per minute flow through the valve (U.S. gallons).
Q:How to carry out the valve strength test and air tightness test?
All the factory must go through the valve pressure test, strength test for 1.5 times the nominal pressure, closed at both ends of the valve import and export, fully open the valve test pressure for 1 - 5 minutes, see the specific situation, also called low pressure seal test seal test pressure seal test, 0.6MPa. Also 1.1 times the seal hydrostatic test, specific, you see, JB/T9092 standard, very detailed
Q:What is the term "Z41H-16C" on the line?
The ram of the Z41H-16C is linear with the stem, called (also known as the bar gate valve). Usually there is a trapezoidal thread on the lifter. The rotating motion is changed into a straight line through the nut at the top of the valve and the guide groove on the valve body. That is to say, the operating torque is changed into the operating thrust.
Q:Where is the Shandong valve? How about joint valves in Shandong?
To find Shandong valve manufacturers, Shandong better valve manufacturers are in Weifang, find the valve factory is also simple, direct search "Weifang valve" is
Q:What is the diameter of a general pipe valve?
The relation between the common mark and the nominal diameter:1, plastic pipes (U-PVC, water pipes, PPR tubes): Phi 20-DNl5, Phi 25-DN20, Phi 32-DN25, Phi 40-DN32, Phi 50-DN40, Phi 63-DN50, Phi 75-DN65, Phi 90-DN80, Phi 11O-DNl00, Phi 160-DNl1502, seamless pipe: DN15- 22mm DN20- 27mm DN25- phi, Phi Phi Phi Phi 34mm, DN32- 42mm DN40- 48mm DN50- 60mm DN65-, Phi Phi 76 (73) mm, DN80- 89mm DN100- 108mm DN125- phi, Phi Phi 133mm, Phi 159mm, Phi DN150- DN200- 219mm, DN250- 273mm3, DN15---1/2--- four; DN 20---3/4--- six; DN 25---1, DN 32--1 1/4 -- an inch; inch two; DN 40---1 1/2 DN 50--- - an inch and a half; 2 - two inch DN 65---; 2 1/2, two and a half inches; DN 80--- 3 - three inch two; DN 100--- 4 - four inches; DN 125-- 5 - DN 150--- 6 - five inch; six inch 8---- eight inch 200--- DN;
Q:How can the valve actuators be classified?
The boring actuator, that is, the pneumatic valve actuator, is described in the customs notesPneumatic valve actuator (three) separately presented. This device is equipped with a piston metal enclosure, linear motion of compressed gas generated by a needle perpendicular to the piston rod into the rotary motion, in order to control plug valve or other device with a rotary deviceSo the Shanghai customs will bring you the list backIn fact, the most important point of distinction or the actuator is pneumatic energy conversion in what form movement of the mechanical energy output, if it is a straight reciprocating, 84123100 is correct, if not belonging to the rotary linear motion, or radians, 841239 correct

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