Great for purging air from rail or truck unloading pipes. Simply open SS "dead man" (spring return valve) at suction pipe line to purge air into tank. Can also be used to flood RV antifreeze into pump suction to winterize. Tank has molded-in screw inserts (5/16" - 18NC) on back side. Screws ship with stand. Plumbing kit with deadman valve, tubing, etc. sold separately. 1-1/4" Bottom fitting. Tank Dimensions are 11" W x 11" L x 19" H.