Siamese Kit 3/8" With Check Valves

Siamese Kit 3/8" With Check Valves. Get a power booster siamese kit for pressure washers. The pressure washing siamese kit is a GPM maximizer allowing you to hook up two pressure washers to achieve more water flow. You should chose the 1/2" option if you'll be at 13 + GPM when you hook up your two machines.