10
11
Figure 8 - Manifold Connector with Master Valves shown with one
cylinder per side.
System 621 X72X-CGA (typical manifold setup with the manifold connector) – see Figure 9 for locations of
components:
1. Tape the male NPT connections on the manifold connector, diaphragm valve, and tee purge using the
procedure outlined on page8.
2. After taping the male NPT connections, thread the 1⁄2 NPT of the manifold connector into the bulkhead
connector of the autoswitch as shown in Figure 9. Wrench-tighten.
3. Remove the tube fitting from the opposite end of the manifold connector. The tube-fitting nut and body
hex must each be held with a wrench when loosening the tube fitting.
4. Thread the 1⁄4 NPT connection of the tube fitting just removed into the diaphragm valve as shown in Figure
9. Wrench-tighten.
5. Thread the 1⁄4 NPT connection of the diaphragm valve assembly into the tee purge as shown in Figure 9.
Wrench-tighten.
6. Thread the 1⁄4 NPT connection of the tee-purge assembly into the starter block of the manifold as shown
in Figure 9. Wrench-tighten.
7. Insert the tube fitting of the starter block assembly into the pre-swaged tubing of the manifold connector
as shown in Figure 9. While holding the hex of the tube-fitting nut and body hex, rotate the wrench until
a significant increase in torque is felt; after the increase is felt, tighten slightly. Note: do not use the gap
inspection gauge to verify proper fitting makeup; the tube fittings on the manifold connector are pre-swaged
at the factory. The proper torque must be applied to ensure a leak tight fitting.
