the threads tight, the valve outlet must be facing the ground.

Tank Outlets

The outlet assembly consists of an elbow, fabricated, made up with a flange, inside, cast iron, and a gasket installed inside the tank An adapter, fabricated, steel pipe, made up with a flange, outside, cast iron, and a gasket are installed outside the tank The outlet end of the adapter is sealed with a cap (malleable iron), held in place by a bolted split coupling (malleable iron). The adapter and elbow are bolted together through the side of the tank.

Cleanout Cover and Frame

Special bolt channels are installed inside the tank at the top and sides of the cleanout opening. Gaskets are installed over the bolts outside the tank.

The frame is a fabricated, rectangular shaped, flanged steel sheet that is flanged all of the way around, both front and back. The back flanges are radiused to fit the outside of the tank. The holes in the bottom flange are punched to fit the tank chime.

Figure 9-24. - Bolts installed at cleanout opening.

The cleanout cover is a flat, rectangular steel sheet. Two formed, round steel handles are welded the outside face of the sheet.

HORIZONTAL CHANNEL. - Place the bolt channel above the cleanout opening inside the stave (fig. 9-24, #l). Insert 1/2- by 1 l/4-inch bolts through all of the bolt holes. Be sure the bolt heads are square in the channel. Install the gasket along the full length of the top seam outside the stave. Allow a one bolt ho overlap at each end.

VERTICAL CHANNEL. - Each side seam the cleanout opening consists of one vertical row bolt holes. Place a bolt channel inside the tank on each row of bolt holes. Insert the bolts through all of the bolt holes. Be sure the bolt heads are square in the channels. Install the gasket along the full length each row of bolts. Pass the gaskets over the top sea gasket. Allow a one bolt hole overlap at each en Apply a heavy coating of sealing putty at the overlap of the top and vertical seam gaskets. Install the radii gasket under the vertical seam gaskets at the bottom chime of the stave.

CLEANOUT FRAME. - To assist in the installation of the cleanout frame (fig. 9-25, #2), push all of the chime bolts flush with the gasket on the chime of the bottom to provide clearance for sliding

Figure 9-25. - Cleanout cover installed.