Emerson Rosemount 700XA Reference Manual page 112

Operation and maintenance
June 2022
6. Loosen the valve's torque bolt.
7. Holding the lower piston plate, pull the valve straight off the block.
8. Remove and discard the old valve diaphragms and gaskets.
9. Clean the sealing surface as required using a non-lint-forming cloth and isopropyl
10. Replace the old diaphragms and gaskets, in the same order, with the new ones
11. Reassemble the valve using the following steps:
Related information
List of engineering drawings - Rosemount 700XA
112
Figure 5-6: Valve
A. Torque bolt
The alignment pins may stick slightly.
alcohol. Blow the sealing surface with clean, dry instrument air or carrier gas.
Note
Dirt, including dust and lint, can cause troublesome leakage.
Do not use an oil-based cleaner on the valve.
supplied.
a) Align the pins with holes in the block and push the valve assembly into place.
b) Tighten the valve's torque bolt.
The six-port valve requires 20 ft-lb of torque; the ten-port valve requires 30
ft-lb of torque.
c) Return the valve to the assembly.
d) Reinstall the valve using the two mounting screws and reconnect all fittings
and tubing.
Reference Manual
2-3-9000-744
Emerson.com/Rosemount