Ensure cartridges are in the closed position before installing into valve body. Cartridges feature color-coded seats. Blue seat on cold cartridge, red seat on hot cartridge.

Step 1 Push each cartridge into valve body until it seats. Add cap nuts and hand tighten. Add handles.

Step 2 Rotate RIGHT handle (and cartridge) counter clockwise to the desired closed position.

Step 3 Using handle to maintain stem position, fully tighten right cap nut to 20 to 27 ft. lb. torque.

Step 4 Move LEFT handle (without moving cartridge) to the open position and fully tighten right cap nut to 20 to 27 ft. lb. torque. Return handle to closed position.