INOXPA PHARMAVALVE, Installation, Service & Maintenance Manual

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16 ED. 2009/09 /
Assembly and disassembly of the valves / actuator must only be carried out by qualified staff.
7.2. DISASSEMBLY / ASSEMBLY OF THE PNEUMATICALLY ACTUATED VALVE
Disassembly
1. Apply compressed air to the actuator (10) in
order to set the diaphragm (05) in the open
position. (NC valve only)
2. Remove the clamp (34) from the actuator (10).
3. Remove the actuator (10) from the body (01).
4. Detach the diaphragm (05). It must be
removed differently depending on whether it is
a type A or type B actuator (see figure below).
Assembly
5. Locate the diaphragm (05) on the actuator
shaft (10), as appropriate for type A or B.
6. Apply compressed air to the actuator (10) in
order to set the diaphragm (05) in the open
position. (NC valve only)
Connect the body (01) to the actuator (10) by
tightening the clamp (34)
Disconnect the compressed air from the actuator (1)
so that the diaphragm (05) is set to the closed
position.
The type A diaphragm (press-on) is standard for Silicone and EPDM. In certain circumstances, when the valve has been closed
for a long time, running dry or during sterilisation cycles, the diaphragm may become dislodged. In order to prevent this, use
connection type B (threaded diaphragm), which holds the diaphragm better.
Consult Inoxpa before replacing one diaphragm type with another.
Valve size
Silicone and
EPDM
Diaphragm
fastener type
PTFE
diaphragm
fastener type
DN ½” A -
DN 1” A / B B
DN 1 ½” A / B B
10.
31
0.3
2.
00
08
Type A:
Press-on diaphragm
Type B:
Screw-on diaphragm
10.
31
0.3
2.
00
07