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Distinctions between C,M and R series
C series BFLY valve
M series BFLY valve
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Selection method
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Material list
 

 

Item

Parts name

Materials

Standard

1

Body-wafer

Grey Iron

ASTM A126 classB

Ductile Iron

ASTM A536 GR.65-45-12

Carbon steel WCB ASTEM A2 16-93
Stainless Steel 304 ASTM A351

Body-Lug

Grey Iron

ASTM A126 classB

Ductile Iron

ASTM A536 GR.65-45-12

2

Seat

Buna-N

ASTM D2000

EPDM

ASTM D2000

Silicon

 

Viton

 

Teflon

 

3

Disc

Stainless Steel 304、304L、316、316L

ASTM A351

Alum Bronze

ASTM B148 C95400

Ni.Pltd.Duct.Iron

ASTM A536 GR,65-45-12

Covered Nylon  
CoveredF46  

4
5

Top stem
Bottom stem

Stainless Steel 420、410、304、316

ASTM A276

Stainless Steel 630

ASTM A693

6

Spring pin (2)

Stainless Steel

ASTM A276 Type316

7

Bush

Nylon,PTFE

 

8
9

O-Ring

Buna-N

ASTM D2000

EPDM

ASTM D2000

Note:We can provide corresponding China GB and German DIN standard.

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