• Flange center line butterfly valve System 1
Flange center line butterfly valve

Flange center line butterfly valve

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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.





Q: How do i use a valve spring compressor. It looks like a c-clamp, so don't tell me how to use a smaller one, but the bigger one.Thanks
save yourself the hassle and throw that thing away go back to your local auto parts store and buy the l shaped spring compresser should be about twenty dollars make sure vehicle is at tdc remove rocker arm bolt remove rocker arms going valve by valve do not mix them up must go in exactly the same order they came out now lightly tap the top of valve with a rubber mallet will help loosen retainers place compresser on rocker arm stud take r.a. nut and tighten till valve locks fall out or can be removed very small dont lose use compressed air to hold valves in place at tdc sorry that should have been first not hard but not easy to do rebuilt 350 motor from the guts out spent alot of money on spring compressers only to find out the simplest one worked the best the one like u got will give u hell i tried napas version craftsman all of them trust me use the L bar
Q: The flow ratio of area and maximum flow area of the valve is? If it refers to the opening of the valve rotation angle? Butterfly linear closure refers to the butterfly valve at constant angular velocity close? When the change trend of flow is what? These valves problem bothering me for a long time,
Butterfly valve is fully open to fully closed is usually less than 90 degrees, the opening refers to the butterfly plate rotation angle;Linear closing should be the locator is linear, if the potentiometer is 0-10 euro, corresponding to 0-90 degrees, 500 Europe, opening 45 degrees;
Q: The difference between gate valve and butterfly valve, as well as cut-off valve, what are their applicable conditions? Advantages and disadvantages?
The gate valve is one of the simplest valves. Generally manual, most of the electric valve failure, as a manual. Butterfly valve is more, I saw the pneumatic butterfly valve, that is, with gas control closed, general and solenoid valve matching.
Q: Butterfly valve network and ordinary butterfly what is the difference?
Butterfly valve used in the network structure, closed with the more closed, the more tight function, reliable sealing performance, after opening and closing, make sure that the cover is completely out of touch, to ensure that the sealing surface is not damaged. The sealing surface is made of stainless steel, corrosion resistant, high temperature resistant, long service life. With two-way sealing function, medium flow is not affected by the installation restrictions (if only one-way control medium should be used to seal the installation direction) is not affected by the spatial units, can be installed in any direction.
Q: What's the difference between butterfly valves and check valves?
Butterfly valve is manual, only switch function.The check valve is an automatic valve, which prevents backflow of the pipe medium.
Q: Butterfly valve sealing material has several?
Nine: X1 (natural food gum), X2 (Heipalen), X3 (ethylene propylene rubber), X4 (neoprene), X5 (Ding Qing X6 (rubber), wear-resistant rubber (FPM), X7), X8 (silicon rubber), X9 (heat resistant ethylene propylene rubber)
Q: Which is expensive, butterfly valve?
The same material and caliber, butterfly valve structure is simple, less wood, the price is much lower than the gate valve, especially for clip type butterfly valve.
Q: What's the difference between an electric two position control valve and an electric butterfly valve?
Double switch electric butterfly valve, electric butterfly valve is usually said, namely the electric butterfly valve in the electronic case can achieve fully open or fully closed precise place to stop, not directly with the pipeline system flow feedback device for regulating the flow of accurate interaction.
Q: What is the D37-10Q butterfly valve?
The model is too simple, right D37A1X-10QB1, D: valve, 3: turbine head, 7: on the vertical plate clamp, A1: type A, X: type of rubber seat, 10: nominal pressure valve Q: is ductile iron, B1: plate is made of ductile cast iron
Q: butterfly valves d7a1x5
D71x-1.6? Or D371X-1.6, do you need butterfly valves for production or butterfly valves? The question perplexed us all.

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