D3/6/941X/943H Flange tap butterfly valve

Flange tap butterfly valve

Product Description

Purpose:

 Butterfly valve is widely used in municipal tap water pipe network,cooling water system,water power system ,sewage treatment works,diversion works,chemical engineering,smelt ,dewatering  and power system,Applicable to the raw water, water, corrosive gas, liquid and multiphase fluid medium,help to control ,cut off and non-return,

Adopt two eccentric or three eccentric structure of butterfly valve applicable conditions for one-way seal.Normally should as the function to install,If the sealed condition for two-way,pls mark it in the contract.Or switch to the center line butterfly valve

Specialty:

-The valve plate adopts streamlined design,Large diameter butterfly valve USES the truss structure

Large diameter butterfly valve USES the truss structure,A large flow,Flow resistance is small

Light weight,It’s convenient to install.

-Two eccentric design is reasonable,when the valve open until A certain Angle(the angle size is  related to 

caliber)Seal off completely reduce the Seal friction,Open/close and effort,And make the valve with functions of water conservancy autistic,The higher the pressure seal more closely,Have certain flexibility as a disc plate seal compensation ability,Is not sensitive to local wear,reliable seal

-Soft sealing butterfly valve sealing ring is made of high quality durable oil nitrile rubber or epdm

Hardness is appropriate,Good elasticity ,ageing resistance,Tear resistance is strong,we are promise that we don’t use regenerated rubber

-Metal hard seal butterfly valve USES three eccentric design,Using special tooling molding tilt asymmetric 

elliptic sealing surface,To ensure that the seal contact and out of the moment,Can be closed more and more tightly and will never be close too,Seal between without friction,To expand the way of seal when appear a little abrade,just close it a little bit it can recover.

-There are window on the padding field,so you can Online tighten or replace the packing

Under the condition of without removal of valve,Packing is made of multichannel forming V combination ring seal structure,To improve the reliability of the shaft seal

-Adopts the oilless self`lubricating bearings,No matter down and stand,Disc plate is not string,Axial sealing

is reliable

Technical parameters of butterfly valve :

Nominal size:DN50-DN5000 

Nominal pressure:0.25MPA.0.6MPA .1.0MPA 1.6MPA 2.5MPA

Pressure:

Shell 1.5*PN MPA

seal 1.1*PN MPA

Temperature:

-soft seal:≤80°C

-rigidity seal:≤400°C

-Media:Water OIL AIR AND Weak corrosive medium, etc

Material List:

Structure chart  of butterfly valve:

 Structure size;