The Twister™
Multi-Use Manway
 Features a Submerged Jet Mixer
PATENT PENDING

A Very Simple & Cost-Effective Tank Cleaning and Maintenance Tool - Enables Online Tank Cleaning

• Engineered for any manway Size to API 650 standards
• Reduce personnel exposure - no entry; shorter duration
• Maximize product recovery/minimize waste
• Drastically reduce cleaning time and cost
• Simple setup and operation
• Permanently install to eliminate sludge in crude oil and other storage tanks without removing from service (online tank cleaning)

The Twister is the first and only permanent or temporary multi-use manway, featuring:

• Directional nozzle for submerged jet mixing, or for water or solvent wash
• Port for injecting cutter stock or chemicals, and taking suction or sampling the tank without opening to atmosphere
• Powerful tank cleaning capabilities to remove solids and LEL levels from the tank for entry
  
• Evacuation of material from area surrounding manway to allow manway to be removed for entry
  
• When permanently mounted, provides online tank cleaning with no manned entry required, to avoid having to open tank until mandated inspection intervals
  
• Effective tank mixing to replace Side Entry Propeller mixers

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Crude oil is notorious for developing sludge on the floor of the storage tank, where the sludge hardens and cannot be removed by normal pumping. The tank has to be taken offline and cleaned, which is hazardous, expensive, time-consuming, and requires sludge disposal.  Tank cleaning often requires personnel entry and potential exposure.

The Twister helps minimize the downtime needed for offline cleaning and/or tank entry prior to tank inspection and service intervals. The Twister works by directing a jet or plume of crude oil across the bottom of the tank, which dissolves and resuspends accumulated sludge. The Twister is fitted on a manway and replaces the existing manway cover, and requires no electrical or other power source other than a feed pump. This system allows the use of oil from the tank itself or a fluid from an outside supply source, such as cutter stock, to clean the tank.

The Twister allows the operator complete manual control from outside the tank. Manually directing the flow through the Twister's nozzle prevents "canyons" from being formed in the sludge/tank bottoms, as often results from fixed nozzles. The manual control also avoids the lock-up that can occur with automatic nozzles, besides being much more cost-effective.

The Twister may be left permanently on the tank without concern for the apparatus becoming inoperable due to sludge buildup. Regular use prevents sludge settling and water separation in the tank.


Ask about our new "Hot Rod" Twister for situations where the sludge is above the manway, precluding removal of the cover.

Check out this brief animation to learn how the Twister can remove all solids from tank bottoms in record time

The standard Twister is made of carbon steel and features a swivel joint, with our standard model using 150# flanges (rated for 265 psi at 200°F). Our standard swivel has nitrile seals and stainless steel bearings.  Various materials of construction are possible, including stainless steel with more exotic swivel seals, as well as pressure ratings to 1000 psi and above.  A number of lockable stops on the control handle allow the operator to govern the plume from the jet over a sweep of 120° degrees, in typically 15° increments. A typical tank might replace 2-7 manways with Twisters, depending on the diameter of the tank, ensuring minimal "dead spots" in the tank.  The tank size and contents will help determine what pumping system is needed to provide adequate cutting and refluidization ability in the tank.  Twisters only rotate in the horizontal plane, making it safe to use with any type of roof structure. Typically, the Twister will flange up to an 8" inlet and be reduced to 2" to 4" discharge.  The discharge from the Twister is a tight jet plume, often described as a "rifle shot" vs a "shotgun pattern" from other tank mixers.

Click here to download our latest Twister brochure.

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From the same minds that brought you Brahman Systems:

(Click to learn more about Brahman Systems Hose and Cable Protection for Industrial Traffic)

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Triton Vacuum Systems

(Click to learn more about Triton High Performance Vacuum Systems)

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