Gear Operated wafer Butterfly Valve

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Product Description:

Quick Details

  • Standard or Nonstandard: Standard

  • Structure: Butterfly

  • Pressure: Medium Pressure

  • Power: Manual

  • Material: CI,DI,WCB,SS,etc.

  • Temperature of Media: Normal Temperature

  • Media: water,gas,oil,etc.

  • Port Size: DN50-1200mm

  • Place of Origin: Tianjin, China (Mainland)

  • Model Number: D37A1X-10/16

  • Brand Name: TVT

Packaging & Delivery

Packaging Details:Standard export packaging: plywooden case, Or as per clients' requirements
Delivery Detail:Within 15-30 days after receipt of L/C at sight or 30% deposit



worm gear operated wafer type butterfly valve


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

Packaging: bubble bag and plywooden case.

Payment term: L/C at sight or TT

Lead time: 15-30 days after the receipt of L/C or 30% TT deposit

We are specialized in the manufacturing and export of various valves. We are located in Tianjin, the 2nd largest port in China and only 1 hour to Beijing by train.

If interested, feel free to contact us without any delay for the competitive price and more info.

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Q:2002 Honda Accord P1457 EVAP faulty bypass solenoid valve?
If they are saying your ECM needs to be replaced, they're probably pulling your leg. What do they mean a 50/50 chance it needs to be replaced? That's a load of BS. Either it needs to be replaced or it doesn't. Very easy to tell. Simply put the key in your ignition and turn to the ON position (do NOT start the car yet). This should flash the lights on your dash. This would include the oil light indicator, check engine light, etc.. they should come on, then go off after you start the vehicle. If these lights flash, then go off after starting your vehicle, your ECM is fine. Also if the ECM is reporting a check engine light, chances are it's working properly. There is a VERY VERY slim chance it is reporting the wrong code, in which case the ECM could very well be bad, but this is very unlikely. If the solenoid is replaced and the issue persists, it is probably another problem that has triggered the P1457 code. They would need to check the train of what could be communicating with the solenoid in case another component has failed. Unfortunately I'm not sure about the other part of your question but just wanted to give you a heads up about the ECM.
Q:What is the purpose of those new valves on bikes that are longer and skinnier and that you?
There are schrader valves which are bigger diameter and are used also for automotive tires. They have a spring-loaded center pin that gets pushed down and opened when a inflating head is used. The spring is what keeps the air in the tube. The presta valve is the skinnier one. It does not rely on a spring to keep the valve close. The air pressure inside the tube keeps the valve closed. Generally, less expensive bikes use schraders while better bikes use prestas. All decent pumps have pump heads that accomodate both types. Either it is done by manually reversing the inside of the head assembly to change between presta and schrader or the head automatically adjusts or you use the appropriate one when the head has holes for both.
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In depth answer is: The Arterial Valves The semilunar valves are mere membranous pockets, and have no tendinous cords attached to them; but on account of the extent of their convex attachment, when their free margin is made tense by the pocket being filled from the artery, the valves can only pass a given distance from the wall of the vessel and are thus held firmly in position. The force of the blood leaving the ventricle distends the vessel and pushes its wall away from the less elastic valve. When the force begins to diminish, the blood passes behind the semilunar flaps and raises them from the wall of the distended artery. The moment the current from the ventricle has ceased to flow, the pockets are forced back by the aortic blood pressure and bulge into the lumen of the vessel, so that the convex surface of the lunated portions of each valve is pressed against corresponding parts of its neighbors. Their union, which is accomplished by their overlapping to some extent, forms three straight radiating lines, and is a perfectly impervious barrier to any backward flow of blood
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Bad valves won't cause the problem you're describing. This is something you need to have a mechanic look at. It sounds to me like you may have an issue with a timing chain or timing belt that has jumped or it's possible that you've got a blown head gasket between a couple of cylinders. There are other possibilities too, most of them not very good. Unless you know what you're looking for, you won't be able to diagnose this yourself.
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Better get busy with that search engine, then!
Q:engine piston valve question ford ?
you cant drive w/ a broken valve lying around in the engine. but yes you can drive w/ carbon build up, it causes the engine to run a lil warmer and prolly acts as a oil seal to the piston even after the rings go out.and youve ran a lot of gas thru in 12 yrs so carbon build up is normal,valves dont always break tho unless you were giving it hell an it jus seen so much wear an got thin an finally broke.mayb its not jammed into the head and its jus broke
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If there is regurgitation but it's minimal, you likely have little to worry about. Mitral Valve disorder is commonly known as a heart murmur. Many people have them. It's only when there's regurgitation involved that it becomes more complicated. Since yours is trace and trivial it definitely requires investigation. At some point they may want to do a repair of the valve or a replacment but that depends on the degree of regurgitation. Regurgitation simply means that the valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood from the left ventricle, through the mitral valve, and into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. Treatment will depend on the severity of the regurgitation so it's something you'll need to discuss with your doctor/specialist.
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Only way to be sure is to put clay on top of a piston and turn the engine over by hand and then measure the clearance on the indentation in the clay.
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I don't know what this means in a fetus at 20 weeks since a lot of changes still lie ahead, but you can glean some info from the nature of this type of defect in adults. If the abnormality doesn't change and if no other abnormalities arise, the flaps of the affected valve will poke into one of the heart chambers. This situation is called valve prolapse. Look up mitral valve prolapse as an example. Typically a valve prolapse is not a serious defect, but if the prolapse is severe it might require treatment at some point in life or maybe even multiple treatments. What the heart will look like at birth is probably the bigger question. Some abnormalities signal a genetic defect that might cause other problems as well. Some defects cause a chain of problems in later steps of development. Your doc should have a good idea if any of these concerns exist. Maybe genetic testing will be suggested, but many defects occur with no explanation and they do not cause other complications. I would guess that after the chambers are developed, a dilated valve would be unlikely to cause any significant complications in later heart development, but this is just a guess.

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