This differential bypass kit for the 1-1/4" manifold (75100 and 75200 series) reduces overpressure in the supply manifold by an automatic check valve that opens and directs some flow to the return manifold. This kit can be installed on either side of the manifold.

• Prevents a steep rise of the pump head and maintains flow at a stable rate.
• Kit can be assembled on either side of the manifold.
• Adjustable balancing valve.
• The bypass will open at a differential pressure (ΔP) of 8.4 ft (25 kPa).