Floating Suction Unit for Floating Roof Tanks

In external and internal floating roof tanks the suction arm has to work underneath the roof. The Vens unit for floating roof tanks carries rollers on the float end, so the assembly can bear against the underside of the roof and roll across it as the level changes, while the inlet stays below the product surface.
Under aluminium or stainless steel internal floating roofs a track is fitted beneath the deck for the rollers to run on. A cable from the arm to a weighted indicator outside the shell shows the arm position from the ground, so operators can confirm the unit is moving freely.
External floating roof crude and product tanks
Fixed roof tanks with an internal floating roof
Terminals and depots storing petrol, naphtha and jet fuel
Tell us the roof type, the roof leg heights and the maximum filling level.
Download our floating suction enquiry data sheet (PDF), fill in what you know and send it with your tank drawing.
Product datasheet: Vens floating suction units (PDF).
Vens has more than 10,000 installations. Every unit is designed by engineers who studied at MIT, Stanford, Cornell, the IITs, Arizona State University and the University of Cincinnati and have worked in the industries that use this equipment, so it is sized for the job, built in the right materials and designed to proper factors of safety.