Flange center line butterfly valve

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Product Description:

1.Technical Date:

Size: DN40-DN1200

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 structure: all rubber lined butterfly valve chamber using advanced heat vulcanization process, no mechanical reinforcement embedded in the body, improve the reliability of the seal, the media completely isolated from the casting, not pollution medium, and the rubber lining, coated on both sides to the flange seal face when installation without sealing gasket, loading and unloading easier and more convenient for maintenance and replacement.

The characteristics of the valve cavity, the valve cavity internal fasteners, not because of loose working medium scour, vibration occurred in the valve, fundamentally eliminate the loose due to mechanical connection or the possibility of failure causes accidents.


Valve design: butterfly valve design and manufacturing of GB12238-89 standard, adopt the advanced computer aided technology, reasonable design, big flow area, sizing smooth transition, small flow resistance, simple and compact structure, convenient operation, flexible seal, zero leakage.


Valve casting technology and materials: the body and the flange is made of whole casting process after the current international most advanced casting resin sand casting process, no blister, no pores, beautiful shape, improved the casting quality of the product.


Stem design and material: according to GB12228-2008 standard for design, fully meet the parameters of the minimum diameter valve shaft torque requirements, material is made of high quality carbon steel manufacturing, prolong the service life of the valve.


Stem bushing design and materials: the body bearing manufactured material with self-lubricating ability, valve shaft and valve plate connection, USES the pin connection or USES the close coordination of square tenon structure without pin,.


Butterfly valve installation: no medium to request, to achieve reliable positive and negative two-way sealing, can be installed in vertical or horizontal, can also according to customer requirements supporting anchor bolt and nut, more suitable for the overall installation and maintenance of butterfly valve.





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Q:What is the effect of nylon coating on butterfly valve plate? Thank you
Mainly media will not be contaminated by rust on the body, you should say that the central soft sealing butterfly valve, the central valve is generally cast steel or cast iron material, so useNylon coatingLining up. There are soft seals, sealing performance is relatively high
Q:How big is the butterfly valve with a diameter of 80?
With the 80 caliber butterfly valve.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 the flow of air, water, steam steam, all kinds of corrosive medium, mud, oil, metals and radioactive liquid media and other types of fluid.
Q:What is the meaning of the D341*5-10 / 16ZB1 turbine butterfly valve flange said?
Liu1964tg, this guy is right, don't know, don't mislead everybody
Q:What are the classification criteria for pneumatic butterfly valves?
Pneumatic flange butterfly valve, pneumatic flange butterfly valve, this product is made up of rubber sealed butterfly valve and carbon steel or stainless steel valve plate and valve stem. Suitable temperature is less than or equal to 80 to 120 DEG C, such as food, chemical, petroleum, electric power, textile, papermaking, water supply and drainage, gas pipes to regulate the flow and closure of the role of media.Pneumatic control valve is a valve (valve plate) around the rotating fixed axis perpendicular to the channel, which is composed of double or single acting piston (spring reset type) pneumatic actuator and butterfly valve, a rotary type high performance adjust or cut off valves, electric, pneumatic valve positioner or electromagnetic valve, air filter regulator, limit switch (valve position), can be realized on the fluid medium in the pipeline and process to adjust the proportion of the two cut off control, automatic control to achieve the parameters of the fluid flow, pressure, temperature, liquid level etc..
Q:1 valve bugle fingering chart? (more complicated than it sounds)?
We learned the scale like this on a G-D horn with no rotor just a valve. O open X valve closed O X O X O X X O
Q:Does the wet alarm valve group need to install the signal butterfly valve?
two is the sprinkler system is not allowed inside water, when the butterfly is closed, will transmit a signal to the the fire alarm system, fire alarm system receives a monitoring signal (so called signal butterfly valve), fire sprinkler system that the floor is anhydrous state, fast repair.
Q:Classification of telescopic butterfly valve
(1) Central sealed butterfly valve(2) single eccentric sealed coal valve;(3) double eccentric sealed butterfly valve(4) three eccentric sealed butterfly valve (1) soft sealing butterfly valve.1) the sealing pairs are made of non-metallic soft materials, which are made of non-metallic soft materials.2) the sealing pair is made of metal hard material and is made of non-metallic soft material.(2) metal hard sealing butterfly valve. The sealing pair is made of metal hard material and is made of metal hard material. (1) forced sealing butterfly valve;1) elastic sealing butterfly valve. The pressure of the valve seat, seat, or plate is produced when the seal is closed by the pressure from the valve
Q:Butterfly valve model D344H and D343 difference
[2]: butterfly valve 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 the air water, steam, and all kinds of corrosive media, mud, oil, metals and radioactive liquid media and other types of fluid flow. On the pipeline, mainly from cutting and throttling. Butterfly valve headstock is a disc shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or regulation.The answer is recommended by Gu Fengxiang, a member of the science education category
Q:Which is more expensive, gate valve or butterfly valve?
Gate valves of the same material and specifications are much more expensive. The weight of the gate valve is much heavier than that of the butterfly valve.
Q:Butterfly valve D71X-1.6C, DN50, there is no difference between C and no C? What do you mean by "concrete"?
D stands for butterfly valve. 71 represents the clamp type, X represents the sealing surface material, and 16 represents the valve to bear the pressure 1.6MPA, C position is the valve body material code, omitted to represent gray cast iron valve; C represents the valve body material is carbon steel.

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