Model Number:
21

Notes:

• Provides an in-line air gap, usually installed in the last 5 feet (1.5 meters) of the indirect drain piping and must be in the down leg of the drain line piping.
• Unit can be tilted at any angle (down as low as 45° angle) when installing if needed, (window opening on top side).
• Molded clamp groove plus included "Jiffy Clip" enable easy vertical wall mounting as noted in top 2 figures.
• Unique design incorporates a rotatable splash guard/splatter shield, to eliminate splatter of water droplets out of either air gap opening.
• Unit approximately 8" (20.32 cm) long.
• Unit design lab tested at 15 G.P.M. (56.8 Liters/minute). Recommended usage is 1 to 7 G.P.M. (3.7 to 26.5 Liters/minute).
• All noted threads are American NPT threads.
• Use the 1/4" F.I.P. threads only with injector washer (P/N 211207) and with flow rates less than 1 G.P.M. (3.8 liters/minute).
• Inlet port also fits our special couplings (P/N 51023 or P/N 211213).
• Multiple air gap openings far exceed the code mandated minimum of (1)" vertical.

Easily provides full backflow and backsiphonage backflow protection. The amount depending on each particular installation.