Resilient seated double eccentric butterfly valve

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Product Description:

1.Technical Date:

Size: DN100-DN4000

Nominal Pressure: PN10/PN16

Operation Temperature: -10°C~150°C

Suitable Medium: Water,Sewage,Seawater,Gas,Food,Oils,etc.

2. Standard

Design Standard: GB/T 12238-2008

Structural Length: GB/T 12221-2005

Top Flange dimensions: ISO5211

Face to face dimensions: GB9112,DIN2501,BS4504,ISO2084,ANSI125

Type of connection: Flange Type

3.Feature:


Product adopts double eccentric structure, the disc sealing ring at the instant of the opening and closing should quickly out of the seat, which can effectively avoid the valve opening and closing process, the seat of the valve plate interference and friction, extend the life of the seal ring. The valve plate adopts the structure light truss over current or pressure on the pressure surface streamline structure design, wide open, the seat effective circulation channel cross-sectional area is big, can greatly reduce the flow resistance of butterfly valve, at the same time guarantee the overall structural strength.


Copper brass seat is surfacing on the valve body, ensuring that no leakage in use. Copper seat smooth level off, solid, corrosion resistance is strong, coaxial degree is high, low surface roughness, cooperate with the seal of the valve plate seal.


Valve shaft adopts two stages, increases the flow area of the flow channel, the valve stem is not easy to hang for sundry, valve spindle insert valve body, valve plate length not less than 1.5 times the diameter of axle, the shaft end due and axial positioning, prevent the butterfly plate used in industrial and mining conditions in axial string.


Butterfly plate and the valve shaft connected with 1:50 taper pin, and seal the pin with a ring, to ensure the stability of the pin connection and sealing. Taper pin with high strength stainless steel materials.


Valve plate seal to the "T" shape structure, the "T" ring material elastic sealing and not just at the same time, with flexible structure, seal with pressure self-tightening and seal pressure compensation function, positioning clamp screw can make rubber ring at the same time, prevent seal up, roll and rubber flabby bumps, make each sealing point sealing force equilibrium, seal wear less, the effect is good. Sealing ring by removing pressure ring can be directly in the line with adjustment, repair and replacement. Maintenance convenient quickly. And ensure the enough strength, pressure adjusting screw is divided into two groups, one group for compression screw, compression screw has limited pressure functions, a group of the adjusting screw, effectively adjust the seal position, guarantee the best sealing performance, and balance the force situation of every screw, compression screw with washer, prevent water impact vibration and make the screw loose fall off.



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Q:What is the medium flow rate when the centerline butterfly valve is fully open?
After inspection, the product certificate shall be attached to the factory.Butterfly: also known as butterfly valve, control valve has a simple structure, can be used for low pressure pipeline valve switching control is closed parts (disc or disc) is a disk, around the valve axis to achieve the opening and closing a valve, the valve can be used to control air, water, steam, all kinds of corrosive media, mud, oil, metals and radioactive liquid media and other types of fluid flow.
Q:butterfly valves d7a1x5
D- valve type (butterfly valve), 7- connection mode (to clamp), A- valve shape mode (A), 1- structure form (vertical plate), X5- valve seat sealant species (Ding Qing, NBR)
Q:How warm is the PTFE butterfly valve?
The normal temperature can be kept at 120 degrees and the instant temperature is 150
Q:Fire signal butterfly valve what role?
Signal butterfly valve should be human action monitoring alarm, once closed, that is, to the system alarmYou ask the two time, I answer two times, you give two points
Q:Are fire fighting signal valves and signal butterfly valves the same thing?
The same nature: both can open and close, there is also information back fed.Signal valves are collectively referred to as signal butterfly valves.
Q:Butterfly valves are widely used in 2.0MPa below the pressure and temperature of not more than 200 degrees of various media, right?
5. butterfly valve structureButterfly valve mainly by the body, butterfly plate, stem, sealing ring and transmission components.(1) the valve body is cylindrical, and the upper and lower parts each have a cylindrical boss for installing the valve stem. Butterfly valve and pipe flange connection, such as the use of clamp connection, the minimum length of its structure.(2) stem, stem is the axis of the butterfly plate, shaft end adopts stuffing box sealing structure, can prevent leakage of medium. The upper end of the valve stem is directly connected with the driving device to transmit the torque.(3) the butterfly plate is the opening and closing part of butterfly valve.
Q:mitral valve prolapse?
Dear Madam, I am a cardiologist sending this article for you. Hope it helps you. Mitral valve prolapse, sometimes called MVP, is a common heart valve disorder. The mitral valve is between the left atrium and the left ventricle of the heart. It has two leaflets (flaps) that control the blood flow. MVP occurs when one or both of the leaflets are enlarged or have extra tissue. MVP is usually harmless. However, major complications can occur, including a blood clot in the brain and an infection called infective endocarditis involving the mitral valve as well as other valves. MVP appears twice as often in women as in men. It is most commonly a hereditary disorder. Some people with MVP have no symptoms. However, most patients experience a rapid or irregular heartbeat, shortness of breath, light-headedness, and chronic fatigue. Many patients also suffer from migraines, eating and sleeping disorders, an overactive or inflamed thyroid gland, diarrhea, and cold hands and feet. Emotional stress often magnifies the symptoms. Doctors generally prescribe regular exams and aerobic exercise for people who have MVP. Patients also are advised to restrict their intake or use of high-carbohydrate foods, caffeine, and decongestants. Some patients may need beta-blockers and specific antiarrhythmic medication. More severe cases may require surgery to repair or replace the valve or to insert an electronic regulator, such as a pacemaker or defibrillator.
Q:My eletric hot water tank started spraying water out the pressure valve?
If it is not overheating due to a stuck thermostat or bad heating element and you changed the TP valve then it is possible you have a problem with thermal expansion. When water is heated it expands and the more it is heated the more volume it will need to expand. Since the water heater and the piping are not designed to expand the water only has one place to go (well two if count the faucet) and that is out the TP valve. This problem is not uncommon and the solution is to have an expansion tank installed on the hot water heater in the piping near the tank.
Q:Where is the pcv valve in a 2001 ford focus?
The PCV (positive crankcase valve) is usually on top of the engine or in the valve cover, but it will be in different locations depending on the engine cylinder count: 4, 6, or 8 cylinder. You may have to go to a dealer and ask for a parts breakdown drawing which will show you where all the various parts are located. Some libraries have big books that show all the details about any model of car. Ask around.
Q:What's the material of the butterfly valve seat?
The seating material shall meet the following criteria:1) fluid compatibility, including expansion, hardness loss, permeability, and degradation;2) hardness;3) permanent deformation;4) the degree of recovery after load removal;5) pull in and compressive strength;6) deformation before fracture;7) modulus of elasticity.

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