This Valve Brush is horizontally aligned, featuring a drip tube and (2) 1/8” female NPT inlets. A pipe plug installed in one of the inlets can be removed to connect brushes in a series.  An adjustable precision needle valve controls the flow rate; it has a friction lock to guard against loosening from vibration.  The bristles are nylon (stainless steel is also available, part no. B1009-SF1BHW).  The total height of the brush is 5 1/8” and total width is 3 5/8”.

A replacement brush that slides into the holder is readily available, part no. B579-2.

The bracket has (2) 9/32" X 5/8" slots for mounting.