This Trombone Valve is a Hi-Lo Bypass Valve that takes the place of a Dual Lance Valve.  It is quicker, with simple movement and features a faster change from high to low.  Good for use in auto detailing and tighter corners.  Maximum 4000PSI, max 8GPM flow and max temperature of 195 degrees F. Available in 1/4" F Inlet or 1/8" F Inlet.