Four Pack vacuum Manifold NB (2 adj. Valves)

Vacuum Manifold for multiple jars.
Compact design.
This manifold will handle two, three or four electrolyzers.

The purpose of the manifold is to combine the HHO
from multiple units into one output hose going to
the engine's air intake system. 

1.25" diameter x 3" high 
Two adjustable valves
Four 7/32nd hose barb inlet valves 
No hose barb outlet (requires 1/2" Male NPT fitting)