The best pipe for this or any ...

The best pipe for this or any ...

The best pipe for this or any system is the one and a half or two-inch hot-dipped galvanized, rust-resistant type.

Black pipe is a good conductor of heat but is more susceptible to rust from the constant damp.

In the sketch (Plate vn) the gas enters through a valve (1) and goes to the solenoid valve (2) (controlled by the thermostat [11]).

From there it goes to the copper coil side-arm heater (coils should be at least % inch), which is controlled by a pilot light.

Water enters the heater through the shut-off valve (7), which is closed after the pipes are filled.

A valve (6) is used to drain the system.

The water passes through the coils and rises as it is heated to the highest point (A).

As the water heats, it expands, forcing some up into the expansion tank (9), which is open to the air at 10. Gravity carries the water to B, a drop of one-half in three inches being allowed.

--------------------------------

Stay tuned for more orchid-growing advice tomorrow! :)




Woo hoo!