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 bracket has (2) 9/32" x 5/8" slots for mounting.  The total height of the brush is 4 7/8” and total width is 4 1/4”.  The bristles are stainless steel (nylon is also available, part no. B1009-NR2BHW).

A replacement brush is readily available.