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APV_RGMS4_ATEX_UK-1_122018.indd
UK
Modulating valve with supported producut diaphragm
APV DELTA RGMS4 - MFS + MFH ATEX
Instruction manual UK-1
APV
10. Materials
RGMS4 component
Material
valve shaft, valve seat, flanges
1.4404 (DIN EN 10088)
housing
standard design
1.4404 (DIN EN 10088)
inner surface electro-polished
0.8 μm
outer surface satin finish
valve yoke
1.4308 (DIN EN 10088)
coupling (compl.),
screws, nuts
1.4301 (DIN EN 10088)
flat diaphragm
(shaft passage)
TFM
housing seal
standard: EPDM
option: HNBR, FPM, VMQ
seat seal, shaft seal,
FGN1 seal
standard: EPDM
option: HNBR, FPM, VMQ
type label
PVC adhesive
Diaphragm actuator
Material
diaphragm shells
sheet steel
plastic coated
rolling diaphragm
NBR or EPDM with fabric insert
connecting rod
intermediate piece
1.4301 (DIN EN 10088)
springs
1.1250 or 1.7102
plastic coated
Positioner
Material
housing
aluminium diecasting,
plastic coated
external parts
1.4301 and 1.4104
(DIN EN 10088)