ITT Engineered Valves Advantage 2.1, Руководство по обслуживанию

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The replacement diaphragm should be identical in size and grade to the original diaphragm.
3. If replacing a PTFE diaphragm, then follow these steps.
a) Install the new elastomer backing cushion over the tube nut.
b) Invert the PTFE diaphragm by pressing the center of the diaphragm face with your thumbs
while holding the edge of the diaphragm with your fingers.
c) Engage the threads of the diaphragm into the tube nut by rotating clockwise.
d) Continue rotating the PTFE diaphragm clockwise into the compressor while securing the back-
ing cushion from rotating.
4. Rotate the diaphragm until hard stop or heavy resistance is achieved and additional force does not
significantly rotate the diaphragm into the compressor.
3.5 Replace the valve diaphragm
Advantage® 2.1 Actuator Maintenance Manual 9