Sinovac Technology Limited

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The setting up of the Sinovac Technology Limited is dedicated to recommend the Chinese excellent vacuum product to the world. The mainly vacuum products that we supply as follow:  Vacuum Pump & Pumping System                 Vacuum Components
 Vacuum Valve                 Arc Ion Evaporation Equipment      Contact Number: +86-760-88282173

 
Butterfly valves PDF Print E-mail

Application
Products commonly used in petrochemical, fertilizer, power plants, oil fields and building industry
Technical norms
The length of the structure: GB12221-89
Connecting criteria: JB79, GB9113
Driven manner: manual, pneumatic, electric and test
pressure valve

Main technical performance

Rubber variety code name

Capacity of bearing high temperature (?)

Capacity of bearing low temperature (?)

Natural rubber NR

80

-50

Butadiene styrene rubber IIR

100

-40

Butadiene- acrylonitrile rubberNBR

100

-20

Chloroprene rubber CR

80

0

B-C rubber EPT

125/160

-40

Silastic SI

200/250

-70/-100

Fluorine rubber  FPM

250

-15

Chlorine alcohol rubber

CIIR

100

-45

CHC

100

-45

 

Nominal diameter
DN(mm)

50~1200

Nominal pressure PN
(MPa/mbar/Torr)

1.0/10 4
/0.75*10 4

1.6/1.6*10 4
/1.2*10 4

1.6/1.6*10 4
/1.2*10 4

2.5/2.5*10 4
/1.9*10 4

Strength test pressure
ps(MPa/mbar/Torr)

Coating body

1.5/1.5*10 4
/1.1*104

2.4/2.4*10 4
/1.8*10 4

2.4/2.4*10 4
/1.8*10 4

3.75/3.75*10 4
/2.82*10 4

Sealed

1.1/1.1*10 4
/0.82*10 4

1.76/1.76*10 4
/1.32*10 4

1.76/1.76*10 4
/1.32*10 4

2.75/2.75*10 4
/2.07*10 4

Operation temperature (?)

-46~135 According to choose rubber identification temperature ( reference table below)

Application medium

Freshwater, sewage, sea-water, air, steam, food, medicine, various oils, acids, alkalis, salts

 

Part name

Valves' body

Valves' seat

Butterfly board

Valves' axes

Bush

D71X-10, D71X-16, D71X -16C, D71X-25Q

Grey cast iron,
Ductile-iron, aluminum-alloy, cast-steel,
Stainless- steel

Butadiene acrylonitrile-rubber,
BC-rubber, chloroprene-rubber, fluorine-rubber, Silastic

Ductile-iron (chromium-plating), aluminum- alloy,
Copper-alloy, stainless -steel

stainless steel, aluminum nickel

Copper alloy of casting aluminum, bronze, teflon

 
 
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