Step 7 · Leak Test

Re-install the valve cartridge you removed before soldering. Ensure the hot/cold orientation is correct. With the shower valve in the 'off' position, go to the main shutoff and turn the water back on SLOWLY. Return to the shower and use a flashlight to meticulously inspect every new solder joint for any signs of dripping or weeping. If all joints are dry, turn the shower valve on to test its function and to pressurize the outlet connections. Check again for leaks. If any leak is found, you must shut off the water, drain the system, and re-solder the faulty joint.

Tools and Materials

NITECORE 4000 Lumens USB-C LED Rechargeable Tactical Flashlight P20iXEklind PSD Hex (allen) Precision Screwdriver - 10-Pieces Set SAE Inch Sizes 0.028 in. - 5/32 in. 92300Flame King High Intensity Propane Torch Head with Ultra Swirl Flame Compatible with 1 lb. Cylinders, MAPP and MAP-PRO FK4500CGAHDX 8 lb Painter 's Rags & Cloths RHDRAGS-8LBSKOHLER Cartridge for Pressure Balancing 1/2 in. Valve in Black RGP500520Oatey Safe Flo 1 lb. Lead-Free Silver Solder Wire 290252FLAIR Smart Vent 4 in. x 10 in. FLAIRVENT410Flame King 340,000 BTU Propane Torch Self Igniting with Turbo Blast Trigger and Flow Valve YSN340KFire Gone 16 oz. A:B:C Multiple Use Fire Extinguisher Spray Suppressant fg-007-102