Crane Process Flow Technologies
12
SaundersA TypeDiaphragmValves
DiaphragmMaterials
SizeDN
8 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350
Non-risinghandwheel
6 5 4 3.5
Risinghandwheel
16 16 16 16 16 16 16 16 10 10 10 10 10
WFB and tank cleaning
15
15
SizeDN
8 10 15 20 25 32 40 50 65 80 100 125 150 200 250
Non-risinghandwheel
6 5
RisingHandwheel
10 10 10 10 10 10 10 10 10 10 10 10 7
As with all valves, the application and environment have a major bearing on actual valve operating
limits, but the following can be used as a guide to the maximum operational limits.
Bonnet assemblieswith rubber diaphragm
Bonnet assemblieswithPTFE faceddiaphragm
Maximumworkingpressure (bar) –ATypevalves
DiaphragmMaterials–Visual ProcessResistanceGuide
Material
Grade
PTFE
214/214K
Fluoroelastomer
226
Chlorosulphonated
polyethylene
237
Polychloroprene
HT
Nitrile
C, CV
Butyl
300, 300V
EPM
425, 425V
Natural Rubber
Q
A B R A S I O N R E S I S TA N C E
High
C O R R O S I O N / C H E M I C A L R E S I S TA N C E
High
PTFE
Fluoroelastomer
Chlorosulphonatedpolyethylene
Polychloroprene
Butyl/EPM
Nitrile
Q
Natural Rubber
