Butterfly Valve DN300 Turbine Type with Hand wheel BS4531
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 set
- Supply Capability:
- 5000 set/month
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1. Manual Wafer Butterfly Valve Description：
A butterfly valve consists of body ,stem ,disc , actuator (manual actuator, worm-gear actuator , aerodynamic actuator or electric actuator) , and wafer type butterfly valve can implement the process for turning on turning off and regulating the flow by the circumrotation of stem and disc that is droved by actuators.
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.
2.Main Features of the Manual Wafer Butterfly Valve
1. Small in size and light in weight, easy instillation and maintenance. It can be mounted wherever needed
2. Simple and compact construction, quick 90 degrees on-off operation
3. Minimized operating torque, energy saving
4. Flow curve teeing to straight line, excellent regulation performance
5. Long service life, standing the test of tens of thousands opening/closing operations
6. Bubbles-tight sealing with no leakage under the pressure test
7. Wide selection of materials, applicable to various mediums
8. The material of valve body: cast iron, cast steel, cast stainless steel and so on.Soft seat. Replaceable. Increase of service life.
9Double half shaft without pin.Square and short neck. Easy to stick scutcheon and cost saving.
3. Manual Wafer Butterfly Valve Images：
4.Manual Wafer Butterfly Valve Specification：
Size: DN50-DN1000
End flange: ANSI B 16.1,EN1092,AS2129
Face to face: ANSI B 16.10
Top flange: ISO 5211
Normal pressure: PN1.0/1.6MPa(150/200PSI)
Body: CI/DI/WCB/ALB/CF8/CF8M
Disc: DI/ALB/Rubber lined Disc/1.2501/1.4529/CF8/Hastelloy Alloy/Monel
Stem: 410/416/304/431/17-4PH/316/monel
Seat: NBR/Hypalon/EPDM/Neoprene/NR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White EPDM/EPDM(NSF)/PTFE
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:I was diagnosed with a VSD and a Biscuspid Aortic Valve and my doctor has started hinting towards sugery. I found out that the only reason i haven't had surgery yet is that it is stable enough to wait until technology improves so i am not left with a large scar. i was just wondering what this surgery would entail and if anyone has had it. I am 19 years old and kind of worried about it...
- VSD or ventricular septal defect is a congenital disease caused by failure of your ventricular septum to fuse with the bulbar ridges of your atrial septum during embryogenesis. Some VSD are fine since only a small amount of blood is shunted from LV to RV but a majority is still shunted straight to the aorta. An aortic valve stenosis which I think is what you are referring to is usually an adult disease associated with rheumatic fever, mechanical breakdown from hypertension, or death from an MI. Aortic valve stenosis is a bit more worrisome since this can lower the output of your heart by acting as an obstruction, which overtime can cause ventricular hypertrophy, a disease with whole set of other problems. New trends in VSD repair uses minimally-invasive surgery using a transcatheter that is inserted esophageally or through femoral artery; very small scars and short recovery time. Aortic valve repair may also be done this way in the future, but if your aortic valve is still patent, there is no need to replace it at this moment because it would require a donor and open heart surgery.
- Q:Dr says I have a leake heart valve. Should I be concerned?? He doesn't think so but I am worried. Should I get a second opinion? I am 53 and a diabetic. Has any one ever had this problem?
- i've got had this very comparable concern 4 yrs. in the past, which grew to become into actual got here across 20 yrs in the past. If the back pass of blood in the mitral valve is extreme and the midsection starts off to amplify, then the only ingredient which would be performed is a valve replace, which i did and stay an exceedingly regular existence now. look ahead to fatigue, dizziness and shortness of breath. If those issues ensue frequently, make an appointment along with her heart expert at modern.
- Q:I am 16, and i have a leaky heart valve. What makes it worse so i can try to prevent from it getting worse? please help.
- Not much can make it better or worse as long as you are in good health and are taking care of yourself. One thing that is very important when you have valve issues is to stay hydrated.
- Q:Leak in Heart Valve ?i was told by my doctor to to do a ultra sound on my heart a few weeks ago, wehn i finished the ultra sound the lady that did the scan asked if i had any type of heart disease in my family, and i responded that i dont, she said that i have a leak in my heart valve, but that was all, i dont have an appointment with my doctor til two weeks from now, i THINK i feel shortness of breath, but i feel like this may all be because im scared ...... main thing is has anyone had this or know anything about this is it dangerous, deadly ? should i be scared ?
- It depends on what valve is leaking, how much is leaking, and for how long has it been leaking. Wait for the physician to evaluate the echocardiogram. Technicians are often wrong or limited in their evaluation, as they are not trained in in-depth evaluation of echocardiographic studies like a cardiologist. Make an appointment with your doctor to discuss the results. You said you think you have shortness of breath, make sure you mention that when you make your appointment. Only your doctor will be able to determine if it is related to your heart, or due to anxiety, or from something else.
- Q:Surly Pilots don't just switch the fuel selector valve of mid flight
- Most likely it was found in the off position because of impact forces. That's not uncommon. The NTSB report mentions that not only was it in the off position it was torn from the fuselage and the fuel lines to it were ripped off and the whole bottom of the valve body was torn away. The airplane hit the water in a steep angle and at high speed, roughly 1 hour after takeoff. NTSB figured it was in a 45 degree bank and beyond 10 degrees nose down...in excess of 4700 fpm rate of descent. Marks on the propeller plus all the engine controls as well as indications on the gauges indicate that the engine was operating at full power. Last recorded fuel flow an instant before impact was 22 gph. It wouldn't have been able to do that if the valve was off. In the roller coaster ride that the plane went through and the confusion he must have had before hitting the water I'm sure he didn't turn it off...he had all could handle trying to fly the plane. He became disoriented in reduced visibility and who knows what he thought was going on. The destruction was total.
- Q:the pressure relief valve on the top of the tank needs replaced
- strictly speaking there are qualifications for this kind of repair hot pressurised water can be very dangerous
- Q:please i want theory of MOTORIZED VALVE ? COURSE TITLE : MEASUREMENT AND CONTROL EXP. TITLE : CALIBRATION AND CHARACTERISTICS OF MOTORIZED VALVE
- Your question is too broad for this forum Google your question Motorized valves Motorized actuators Hope this properly answers your question
- Q:Hi. I am planning to install new kitchen faucet and noticed that there are two shut off valves under the sink. One of them is badly rusted and needs to be replaced. I noticed that it is connected to three pipes (one of which is kitchen faucet). The other is clearly water coming in. What is the third one connected to wall? Also how should I go about replacing this? Anything that I should be careful of? Thank you.Here's picture of shutoff valve.
- Im assuming that third pipe is to a dishwasher? Anyhow..you will have to shut off you main water valve, most likely located in your basement. Then crack open all faucets to drain any water in pipes, before you disconnect the water pipes and valves under sink. The other pipe may also be the hot water coming in...hard to tell without a picture!
- Q:here are pix's i want to no, if there is a easy fix or does it have 2 b machined thanksi think it use to have a bent valve in it
- There is really no such thing as has to but there is a thing as ought to. You should put good used heads in a machine shop for a clean up and restoration. The worse they are, the more they need new seats, seals, guide clean up with new valves, surfacing and so on.
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Butterfly Valve DN300 Turbine Type with Hand wheel BS4531
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 set
- Supply Capability:
- 5000 set/month
OKorder Service Pledge
OKorder Financial Service
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