Nortec Steam Distribution - Manual (Page 7)

Steam Line Distribution Installation Manual | 4
Condensate Return Guidelines for Main Steam Lines

Use vertical condensate leg of distributor only. Do not over-tighten clamp.

Condensate traps on steam mains must be located at all low points in the system, at each
elevation change and or directional change.

Horizontal runs of steam must rise 2” per foot (10°) when flow is going upwards away from
condensate trap, and fall ½” per foot (2°) when flow is going downwards towards a condensate
trap.

In a horizontal run of the steam main, condensate traps must be located at regular intervals of 20
feet.

The condensate trap itself is a section of piping connected to the bottom of the main. A full size tee
must be used to create a condensate trap to allow the condensate to fall away from the steam
flow.

Vertical drop of the condensate trap should be 1.5 times the diameter of the steam main but no
less than 12”.

A P-trap should be installed at the bottom of the condensate trap. The center to center trap height
should be 2” greater than duct static pressure.

All distributors must be individually trapped.
Figure 1: Drain Tee