Two manifold pipes were provided, one for after-coolers and dryers that contained their own internal automatic drains, and one for lines, filters and tanks that needed an automatic drain. The manifold outputs were combined, and then passed onto an oil/ water separator. Oil to a collection container, and water to a local drain. Automatic Compressor Drain Kit - 46960/68244. Does anyone have the instructions for the Automatic Compressor Drain Kit #46960 or #68244. This kit no longer exists at my Harbor Freight and cannot be found on their website. There are some similar kits by other manufacturers (Primefit Cd1000, Truepower 09-1701) that all appear to be the same kit. Minimprover Air Compressor Drain Extension Kit,Extended Tank Assembly Kit,Including 12 Inch Air Compressor Tank Drain Hose 1/4" Male NPT,1/4" to 3/8" Brass Adapter and Thread Seal Tape California Air Tools 20040CAD 4 hp 20 gallon Ultra Quiet & Oil-Free Steel Tank Air Compressor Auto Drain, White. 4.1 out of 5 stars 18 $ 1,269. 00. Get it if your compressor is electrically driven, (1) remove the plug from the wall. if it is gas driven, (2) turn the engine switch to off. step 2: bleeding the system air installation instructions for wv-1 bleed any existing air from the tank by following the instructions in the owners manual. step 3: prepare the receiver (1) remove the existing Eliminate manual draining. Automatically drains condensation from the air compressor tank. Designed for use with all air compressors. Easy to install and maintain. Set the drain to activate anytime between 30 seconds and 45-minutes. Includes: electronic auto tank drain with 6 ft. power cord, clean out strainer valve, 10 braided stainless steel