The LP 533/833 SGT gas vacuum loader from Vac-Tron Equipment is powered by a 37 hp Kohler gas engine. Similar to the pre-Tier 4 Final SDT diesel model with 1,000 cfm vacuum pump, the LP model features the Series 33 safety rear door that opens to a 90-degree angle with automatic safety lock. The CVS filtration housing has a 28-inch-diameter cyclone, four-way valve for reverse pressure, silencer for quiet operation and 6-inch debris discharge valve for off-loading liquid materials by gravity or under pressure to another container. The optional strong arm helps support the weight of the vacuum hose. 888/822-8766; www.vactron.com.