[Fig. 144] is a well-tried system of heating by exhaust steam in which “7” represents the steam exhaust pipe, with “6” showing back pressure valve with weight to adjust amount of back pressure; “4” “4” are steam supply pipes to radiators; “5” “5” are risers; “9” “9” are condensation return pipes from the radiators; “8” is the pressure regulating valve from the boilers. [Fig. 144] may also be said to represent the general method of piping used in steam and hot water heating, which is difficult of illustration owing to the fact that each locality where it is used requires a different adaptation.

CARE OF STEAM FITTINGS.

Many steam fittings are lost through carelessness, particularly in taking down old work, but the great bulk are simply “lost” for lack of method in caring for them. This task properly falls upon the engineer, as he usually is intrusted with the selection and ordering of the necessary work. A great saving in the bill of “findings” can be effected by proper attention.

The same systematic care exercised over the other fittings, tools, appliances, oil, fuel, etc., used or consumed in the engine and boiler room may be urged with equal emphasis.

1⁄4 and 3⁄8 in.
1⁄2 in.
1 in.
11⁄4 in.
11⁄2 in.
Elbows Tees. Nipples. Plugs. Reducers.R’s and L’s.Unions2 in.
couplings.
Fig. 145.

Fig. 145 shows a case for keeping fittings, which will enable one to find any particular piece without a moment’s delay. In this admirable arrangement it will be seen that the heavy fittings are all at the bottom, the light ones at the top. In the top row of all, the one-quarter and three-eighth inch fittings are placed, being so small that a partition may be put into that row of boxes, and then have plenty of room, and giving twice the capacity to that row of pigeon holes.

Above this case, which is built of one inch boards, may be put a set of four cupboards, double doors being fitted to each, and thus making a door over each compartment in the fitting rack. The shelves run through these cupboards from end to end, and are not divided by vertical partitions. The necessary brass fittings are kept on these shelves, and the doors are secured by good locks. The lightest fittings are placed on the lower shelves in this cupboard, being in greatest demand.

TOOLS USED IN STEAM FITTING.

Fig. 146.