Manual Operated Wafer Type Butterfly Valve

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Product Description:


4.manual,electric,pneumatic operated.

Wafer Type Butterfly Valve with Lever actuator


1. Small in size, light in weight, easy installation and maintenance.

2. Simple and compact construction, quick 90 degree on-off operation.

3. Minimized operating torque, energy saving.

4. Flow curve tending to straight line, excellent regulation performance.

5. Long service life, standing the test of tens thousands opening/closing operations.

6. BUbbles-tight sealing with no leakage ubder the pressure test.

7. Wide selection of materials, applicable to various medium.


Nominal pressue (MPa)1.01.6
Nominal diameter(mm)50-100050-1000
Test pressureShell1.52.4
Applicable temperature150
Applicable mediumFresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids,
Alkalis, etc.
Operating mode     manual, worm gear, pneumatic, electric, etc.


Design & ManufactureFlange ConnectionFace to Face DimensionTest & Inspection
DIN PN10/16/25; ANSI B 16.1
BS4504; ISO PN10/16
JIS B 2212/2213
BS 10 table D; BS 10 table E
ISO5752 series 20
API 598

Material List:

No.Part NameMaterial
1BodyCarbon Steel/Stainless Steel/Cast Iron(GGG25)/Ductile Iron/ Al-Bronze
2DiscAl-Bronze/CF8M/Ductile iron/WCB
4StemCarbon Steel/Stainless Steel314/Stainless Steel316
6O ringEPDM/PEFE/Buna/NBR/Hypalon

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Q:A customer has a G. E. SmartWater waterheater 7 the drain valve leaks, is there a gasket that can be serviced?
If it is a regular brass valve, you will have to drain the tank first, then replace the washer in the valve with one rated to be used for hot water. You replace the washer just as in any valve by removing the bonnet and stem. there you will see the washer. You may want to clean the area of any calcium carbonate that may had developed on the seat before putting it back together. If you decide to replace the valve, it is a 3/4 inch male NPT hose bib valve rated for hot water service. Personally, I've always thought that if I ever had to change one of those valves, that I would replace ti with a good ball valve that had a threaded hose end screwed into the discharge end for better drain flow. The whimpy valves that they put on water heaters is pathetic! If you use your favorite search engine and just search for water heater drain valve, you will find all kinds of cool replacement valves!
Q:Automotive valve question?
a) The very end is the tip. Below that are grooves that the keepers lock into. This is actually the thinnest part. Below that is the rest of the stem. The general name for the largest part in total is the valve head. b) Surface sounds right. Hadn't really thought about it before. LOL c) Valve Guide. These can either be just a plain hole in the cylinder head material, or often they have bronze inserts. Plain Guides are often repaired by a process called knurling. d) Valves seal to the head by grinding each at the same angle, (usually 45 degrees) and then they are lapped which is where an abrasive compound is placed in between, and the valve is rotated. This matches the surfaces more closely yet. The parts that seal are called the valve face and the seat which is actually a separate part that is inserted into the head, and can be replaced. e) Oil is supplied to that general area, by either holes in pushrods that lubricate the rocker arm, or in the case of rockers mounted to a shaft, through the shaft. In the first case, oil is supplied by the hydraulic lifters. In the latter, the shaft pedestals are drilled for oil passages. In both cases, oil is present in the area, but is not applied directly to the valves. In fact, the job of the valve stem seal is to keep too much oil from getting in the guides. f) Usually the coolant flowing through the heads is enough to carry away the heat, although some hi-performance engines employ techniques such as hollow exhaust valves filled with sodium. Most normal valves are solid.
Q:1990 Geo Storm EGR valve?
the call the number on this site.. get what you need and have them ship it.. and put it on yourself... save about thirty dollars shop charge.. ok
Q:Sprinkler valves make loud "squeak" noise?
As the valve shuts down, the diaphragm will vibrate as the pressure changes from one side to the other, then it will Thump as it seals. This is normal. However, to isolate the squeak, you may check to see if there is a 1(backflow preventer installed, 2) (if built into the valves) the variable pressure screw on the top of the valve is set correctly. The variable pressure screw usually has a cross top handle (older ones had a dial) and should be set so that on a high pressure line, it shuts down fairly quickly. If this is open all of the way, it can cause the diaphragm to squeal by slowing the internal pressure change to shut it down.
Q:How does a valve actuator work?
Valve actuators are of various types namely electrically operated , pneumatically operated. Pneumatically operated actuators can be diaphragm operated for globe , gate valves. Pneumatic actuators can be quarter turn type for ball or butterfly valves. Pneumatic actuators can be cylinder operated for say Knife gate valves. Actuators are again single acting spring return type or double acting. Again actuators can be classified as on-off type or control ( modulating type). On- off pneumatic actuators can be operated with solenoid valves . As you mention the fluid to be natural gas, you have to select solenoid valves which are intrisically safe at the same time these valves may be placed at a safe distance from the valves and piping. These valves are again actuated by controllers( on -off , PID) connected to the level switches, pressure sensors or temp sensors as the case may be. To control flow rates, you need to use a pneumatic control valve with a pneumatic positioner operating on (0.2-1 kg/cm2) with current to pressure convertor or an electroneumatic positioner ( 4-20mA control signal). These can be used to control flow rate or downstream pressure. Other elements required are pressure or flow sensors, PID controllers. The control again depends on how the plant is operated ie DCS or PLC controlled. If it a simple requirement then the actuatar can be made to operate on a system of limit switches. While selecting an actuator the fail safe mode ( in case of power, signal or air failure) should also be taken into consideration , which is specified by words like normally open or normally closed etc. Avoid electric actuators as the gas is inflammable as a particular case.
Q:shuttle valve location?
The shuttle valve is a part of the brake modulator this problem is addressed by the replacement of the brake modulator and that's a $1,500.00 dollar part plus labor but I believe that they sell a shuttle valve repair kit for around $100.00 dollars.....
Q:how do you check a solonoid on a sprinkler valve?
dio, yes, if your sprinkler control valve is not opening a zone valve in the automatic mode, then manually turn the solenoid on the zone valve counterclockwise, it sprinklers come on , then you have confirmed a bad solenoid. these can be purchased seperately or another oprtion is a complete zone valve dio, well, if water is flowing thru then the solenoid is not sealing on the zone valve body itslef. unless there is debris between the solenoid washer and zone valve body, then sounds like a bad solenoid...
Q:Natural Gas Vs Propane Valve?
the reason for the difference in orifice size is pressure, not btu! propane is highly pressurized and uses a smaller jet. they use the same burners, so change the jets,, it is usually easy unless you have one of those that require a special tool,,
Q:hi i just found out last week i have a micro valve and have willam sydrome i need more info about the valve?
I have a mitral valve prolapse. Don't know if this is what you meant or not, but it can lie dormant for a long time. I thought I was hvaing a heart attack!!
Q:Heart Murmer - Slightly Irregular Valve?
Actually this is quite common and is usually not a concern. It is generally felt that the misshapen valve leaves you more open to potential infection, especially when having dental work done. But this is quite rare. Still, if the dentist knows you have the condition they will require you to take a loading dose of antibiotics to protect yourself when you have any work done. Occasionaly I would forget and they would send me home. Geeze. Still, better safe than sorry. In the big scheme of things it means very, very little and you will probably never know its there. There is no need to see a specialist, again, this is very common and very, very rarely causes any problems. Just keep on keeping on and you will be fine. Just consider the antibiotics pre-dental work. All you have to do is call the doctors office, tell them you need some for a dental visit, they will fax over a script to the pharmacy, you pick it up, eat something first, then take the antibiotics and you are done, no big deal. I hope this helps.

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