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:Can the inlet and outlet of butterfly valve be reversed? Why? What will happen if the reverse gear is installed?
Are butterfly valves and check valves fitted together?Butterfly valve is nothing positive and negative ah!
Q:What kind of butterfly valve is sd342x?
Sd342x: two-way double eccentric soft sealing butterfly valveS: two way pressureD: butterfly valve3: turbine operation4: flange connection2: double eccentricX: rubber sealProbably the shape is not so good in appearance,Double eccentric mostly elastic sealThree eccentric is multi-layer sealHope to be of help to youOpened valve Co., Ltd. on the production of butterfly valve
Q:unstick valves in 1988 volkswagon rabbit?
The only reason for a stuck valve is if it bent from a thrown timing belt. Sitting 4 years will not cause valves to stick usually, because there is always some oil leakage from the head, that prevents rust. How do you know the valve is stuck? Have you done a compression test, checked the valve clearance? When you say you take a wrench to manually unstick it, it would help to know what you mean, because there is no place to put a wrench that would help unstick a valve that was stuck. You need to tell us much more.
Q:The difference between vertical and horizontal butterfly valves in municipal water supply
The general municipal water supply butterfly valve is mainly vertical installation, mainly due to underground pipe network, vertical drive device in the upper, easy to operate, and installation of smaller wells;Horizontal, usually large diameter butterfly valve, usually used in the main network, often open, not easy to collect slag.
Q:The difference between butterfly valve and gate valve
Its varieties and quantities are still expanding, and the development of high temperature, high pressure, large caliber, high sealing, long life, excellent regulation, as well as multi-function development of one valve. Its reliability and other performance indicators have reached a high level. Disadvantages, there is a certain resistance to the medium. Gate valves are more used in steam pipes and large diameter water supply pipelines, because of the general requirements of fluid resistance is small, the use of gate valve. Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open. Need a higher installation space, the valve sealing surface has a certain self sealing capacity, its spool by the media pressure closely with the valve seat sealing surface contact, to achieve tight leakage.
Q:Old Thompson Aircraft Engine Valve, help dating?
Wow Hannah! That's a cool find for sure! It appears to be possibly a valve for a radial aircraft engine as it looks very similar to ones i've seen used in Pratt+Whitney R3350's etc. It looks like it could probably date to the 1940's up thru the 1950's. Look for a Part Number stamped on the valve or on the box. After WW2 there were all kinds of manufacturers making parts for airplanes. Many were gobbled up by competitors, converted to manufacturing other products or went out of business altogether. However, a few did hang on....and I think this may be what has become of Thompson Aircraft today.... Thompson Aerospace, Inc 22431 Antonio Parkway B160-102 Rcho Sta Marg, CA 92688-2804
Q:My eletric hot water tank started spraying water out the pressure valve?
so that should have fixed it I wonder if you needed to replace the stats
Q:Import electric butterfly valve which brand is more reliable?
Recommend Sichuan Ding Heng petroleum machinery company sales agent SPM butterfly valve and FMC butterfly valve, we are partners for many years, have been working together are very happy.
Q:Tight valves?
Chev engines have hydraulic lifters, keeping the valves adjusted correctly at all times. 20 lbs isn't much to worry about anyway, but if you want dump a little oil (about a tablespoons worth) into that cylinder and recheck it. If the compression jumps up, then your rings are getting weak. If not, you may have a leaky valve.
Q:Do you use the straight stem butterfly valve in the fire fighting engineering?
Only the gate valve clearly rod and dark pole, butterfly valve classification is the clamp type and flange type, Zhengzhou butterfly valve factory, Mr. Zhao

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