3.2.2 Assembling the Inlets
1. Assemble the inner tank bulk head fittings (nipple, washers, and couplers on each side
of the tank wall.) The fittings shown in the photo below are easier to tighten in a vice
before mounting on the tank itself.
2. Apply high temperature resistant silicone to the inside of the tank wall for sealing. Wait
for this to dry.
3. Attach end-stops to the outside couplers. Fill up the tank for a leak test.
4. Line the bottom of the outer drum with (level!) wooden off-cuts, increasing insulation.
5. Wrap two sheets of Termo-flex insulation around the tank and one inside of the drum.
Position the tank inside the outer drum.
6. Fit the long nipples that pass through to the outside of the metal drum.
Bulkhead fitting assembly
3.2.3 Creating the rubber washers
The rubber washers can be made in the workshop using tough rubber.
Making rubber washers
22