Abstract: An automated bulk tank pressure exhaust valve automatically exhaust air pressure from a bulk tank of a bulk tank trailer in response to a sensor operatively communicating with the exhaust valve sensing an absence of air pressure or air flow in a tank pipe communicating with the bulk tank. The sensor is also operatively communicated with in alarm that is activated in response to the sensor sensing air pressure or air flow in the tank pipe or a truck coupled to the bulk tank trailer.

Abstract: A cam assembly of a cam and a cam post replace each threaded fastener used in attaching a tube plate to a support ring of a bulk tank filter canister. A plurality of cam assemblies replace the threaded fasteners of the filter canister and enable the tube plate to be easily and quickly separated from the support ring when servicing the filter tubes suspended by the tube plate in the filter canister.

Abstract: A pressure and heat molded polymer tube, formed of miniscule polyethylene beads, each in the vicinity of 115 um powder in diameter, which when compression molded forms pores that are of uniform diameter throughout their length within the range of 5 um-10 um, the tube having an upper flange, that mates within a correspondently shaped grommet, which when applied to the transverse plate of an air filtration housing, functions to cleanse highly efficiently the dust particles and debris from the air being filtered, when passing through the filtration system, so that such purified air can be discharged safely.