Alfa Laval GJ A1

The revolutionary, fluid-driven Alfa Laval GJ A1 tank cleaning machine is designed for permanent installation. It provides true germ and bacteria-free cleaning to meet the demands of the dairy, beverage, food, pharmaceutical, and personal care industries.

The patented GJ A1 tank cleaning machine is designed to clean the entire tank, including areas with potential bacteria growth, making it ideal for sanitary cleaning applications. Variable flow rates and a consistent 360º spray pattern ensure reproducible and repeatable cycles that provide thorough and verifiable cleaning.

The Alfa Laval GJ A1 is the first and only rotary impingement tank cleaning machine designed to meet the requirements of 3-A Sanitary Standard 78-01*. The machine is self-cleaning and easy to assemble and disassemble for internal inspection.

*For spray devices intended to remain in place.


The revolutionary Aseptic-1 machine is designed for permanent installation and provides true germ and bacteria-free cleaning. The Alfa Laval GJ A1 is the first machine of its kind to comply with 3-A requirement 78-01.

Working Principle

The Alfa Laval GJ A1 is self-flushing and self-draining, meeting the stringent standards for sanitary tank cleaning. It is ideal for cleaning process vessels, fermenters, and storage tanks.

This robust machine cleans tanks fast, efficiently, and effectively. The Alfa Laval GJ A1 utilizes patented rotary impingement technology, enabling the machine to spin and rotate in a precise 360° pattern, quickly scouring 100% of the tank.


The Alfa Laval GJ A1 is highly sanitary in design and incredibly powerful. It has the capability to exert ten pounds of cleaning force at ten inches, while still operating at a low pressure. 

Operating Range
Pressure20 to 80 psi
Temperature32° to 190°F (Can be sanitized with steam at temperatures

up to 300°F)

Flow Rate20 to 70 gpm
Cleaning Radius15 ft
Wash Cycle Time3 - 7 min
Impact10 lb at 10 ft
Dimensional Data
Height 14.15 in
Body Diameter 8.75 in
Overall Width 5.69 in, including nozzle housing
Clearance 5.75 in, minimum passageway I.D.
Weight 12.10 lb

Various sanitary inlet adaptors are available.

Other Specifications
Inlet Connection Standard Connection: 1.5 inch slip-joint over sanitary stainless steel tubing.
Optional Connections: 1.5 inch or 2 inch Tri-Clover sanitary fitting, 2 inch slip-joint over sanitary stainless steel tubing and retaining clip. 
Other adaptor sizes are available upon request.
Construction/Design Parts are machined from 316-L and 316 stainless steel investment castings or 316 stainless steel bar stock. All exposed parts are 316-L stainless steel.
O-rings Made from compliant UHMW-PE material.
Bearings Bearings in the rotating elbow and nozzle housings are self-flushing Teflon and UHMW-PE materials.
Nozzle Carrier Dual nozzle 5/16 inch, 3/8 inch, and 7/16 inch
Drive Mechanism The wash fluid enters the GJ A1 at the inlet collar where it encounters and spins turbine blades. The turbine blades directly drive the body of the unit to the middle of the input shaft.
Mounting The GJ A1 is designed to be mounted vertically, suspended from the top of the vessel.
Lubricant The GJ A1 is a non-lubricated, contaminant-free unit. No customer supplied or user-maintained lubricant is needed.
Gear Ratio 1:1 Direct Drive
Operating and Maintenance Complete operating and maintenance procedures are covered in a detailed instruction manual furnished with all machines. Ready availability of in-stock spare parts or kits. The ease of on-site maintenance minimizes the need for costly factory repairs. Prompt factory overhaul or repair service is always available. Replacement parts and service kits are stocked year round. Special 24 - 48 hour delivery available upon request at no extra charge.
Warranty All GJ A1 devices are warranted for eighteen months from the date of shipment against any defects in workmanship or materials. Normal maintenance parts such as o-rings and bearings and are not included under this warranty, nor is damage caused by dropping, use of destructively corrosive fluids, or other abuse. This warranty shall not apply to any malfunction resulting from use of non-brand replacement parts purchased from any source other than Alfa Laval or Central States Industrial. For full details, see “Terms and Conditions of Sale.”

Product Literature

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