Disassemble the gas evacuator/relief valve.
(a) Use a Phillips screwdriver to remove the four screws from the face
(b) Lift the face plate.
Remove the internal components.
(a) Check between the housing and diaphragm for soda lime
accumulation. Clean away any accumulation with warm soapy water and a soft brush.
Rinse and dry thoroughly.
(b) Check for dust accumulation on the knob or nameplate. If you find
any dust, you should wash, rinse, and dry the components.
(c) Check the rubber diaphragm for swelling, tackiness, or cracking. If
any of these conditions is present, replace the diaphragm.
(d) Check the O-ring between the knob and the face plate for swelling,
tackiness, or cracking. If any of these conditions is present, replace the O-ring.
(e) Inspect all internal components for wear. Replace any worn or
Wipe all parts with a soft, dry cloth.
Lubricate as follows:
(a) Apply a thin layer of Vac Kote (Vac Kote is a trademark of the Ball
Corp) to threads of the knob.
(b) Apply a thin layer of Vac Kote to the outside of the spring sleeve.
Never use an unauthorized lubricant.
(4) Reassemble and check out gas evacuator/relief valve ensuring the
components are grit free and dry. Reassemble the components in the following order.
(a) Replace the housing.
(b) Replace the diaphragm and be sure to seat it with the Teflon plate
facing the housing before remounting the face plate.