Azbil Corporation
10
Table 4-5 Pressure resistance test (water pressure)
Unit: MPa
Connection diameter
(inches)
Diaphragm material: PTFE
(body material: anything other
than hard natural rubber)
Diaphragm material: rubber
(natural rubber, chloroprene,
EPDM)
1/2
1.2
1.6
3/4
1.2
1.6
1
1.2
1.6
1-1/2
1.2
1.6
2
1.2
1.6
2-1/2
1.2
1.2
3
1.2
1.2
4
1.2
1.2
~CAUTION
(1) Make sure that grease is not applied to the diaphragm.
(2) Before starting assembly, check that there is no foreign matter on the
diaphragm, lining, or weir section so that foreign matter will not be caught in
the valve during operation.
4.3 Disassembly and Reassembly of the Actuator
In principle, disassembly of the actuator should not be necessary. However,
when changing specifications or when replacing parts in the event of a failure,
disassemble it by referring to the user’s manual for the multi-spring diaphragm
actuator (document No. OM2-8213-0500).
Summary of Contents for VDD Series
Page 1: ...OM2 8110 0530 Weir Diaphragm Control Valve Model VDD_ _ _ User s Manual...
Page 7: ...v Tighten evenly in a diagonal pattern Max weight...
Page 28: ...Azbil Corporation 14...
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