DESCO Air Hat Air Train Installation Instructions continued.
Page 2
Remove the cardboard spacer from under the copper tube (if used).
Tighten all connections starting with the air control valve retaining nut. The copper tube and
inside elbow can force the air control valve to cock if tightened first. It is important to align the
air control valve with the snout to insure the valve handle will not hit the snout.
Install the spacer and cap on the Air Control Valve stem.
After the Non-Return Valves are installed on the outside elbow the assembly can be pressure
tested by attaching a 100psi air source to the helmet. With the ACV closed use dish soap and
water solution to check each joint for leakage.
8-Copper Tube, 9-Inside Elbow, 10-Air Diffuser, 11-Lambswool, 12-Air Control Valve,
13-Handle Retaining Nut, 14-Handle, 15- Cap Nut, 16-Valve Retaining Nut, 17-Brass Washer,
18-Lead Washer
