Tank cleaning equipment

GJ 88

The Tanker Cleaning System

The GJ 88 Tanker Cleaning System is the only cleaning system available that can ensure complete interior cleaning of any size OTR food grade tanker. Using two proven Gamajet E-Z VIII cleaning machines, the Gamajet 88 will powerfully clean the tanker - especially the notoriously hard-to-reach upper bulkheads.

Jets are directed in a 360 degree pattern, with the two spinners positioned to ensure a 90 degree angle of impingement at the bulkheads for the maximum cleaning effect. Cleaning on every rotation, the 88 eliminates residual materials and the potential for bacterial growth.

By using two lightweight E-Z 8's, the 88 weighs the same and requires the same flow and pressure as a single conventional spinner, yet still provides all the force you need to clean. This can only be done with the E-Z VIII from Gamajet!


The Gamajet88 system includes:

  • One (1) Stainless Steel Tanker Cross Mounting Assembly for mounting the tank cleaning machines. 
  • Two (2) Gamajet E-Z8 Cleaning Machines
  • Manway Adaptor Available Upon Request
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Operating Range:

  • Pressure: 100 to 750+ psi (5-50+ kg/cm2)
  • Temperature: 32° to 250°F (0°-121° C)
  • Flow Rate: 60 to 160+ gpm (227-606 lpm)
  • Wash Cycle Time: 8-15 min.

Overall Dimensions:

  • Height: 10.75 in. (273 mm)
  • Clearance: 16.75 in. (425 mm) minimum passageway I.D.
  • Weight: 39.5 pounds (17.9 kg)

Other Specifications of the GJ EZ-8:

Inlet Connection:

 1 1/2 in. NPT-Female / 2 in. Quick-Disconnect Male


Parts are machined from 316-L Stainless Steel investment castings or bar stock.

Impeller & Final Shafts:

For increased wear resistance, the input and output shafts are plasma-sprayed with a Chromium Oxide coating on Stainless Steel.

Shaft & Gearbox Bushings:

Input shaft thrust is absorbed by a Tungsten carbide bushing. Gearbox bushings are carbon-filled Teflon or other non-cupric material.


Bearings in the rotating tee and nozzle housings are self-lubricating, carbon-fiber-reinforced polyphenylene sulfide.

Bearing Cups:

Main body castings are protected by replaceable 316-L Stainless Steel cups for extended frictional wear life.

Static Seals:

O-Ring materials are selected for each application. Viton® is standard with Kalrez®, Zalak® and EPDM available. Other materials can be supplied on special order.

Dynamic Seals:

Rotary shaft and housing seals are spring-loaded, double-lipped and made of PTFE. They are reinforced for extra long wear and protection against leakage, abrasion and deposit build-up.


Standard nozzle sizes 1/4 in. (6.4 mm), 9/32 in. (7 mm), 5/16 in. (84 mm), 3/8 in. (9.5 mm), 7/16 in. (11 mm). Other nozzle sizes available upon request.

Drive Mechanism:

The wash fluid enters the Gamajet at the inlet collar where it encounters and spins turbine blades. The turbine blades are attached to the top of the input shaft, the bottom of this shaft is connected to the inside of a sealed, planetary gearhead which then turns the body in the horizontal plane and the nozzles in the vertical plane.

Planetary Gearhead:

The sealed planetary gearhead has an external casing made of steel, surface-anodized to become stainless. This sealed gearhead is located inside the gearbox, which itself is sealed, and thus does not require any lubricant. All internal parts are hardened sintered steel, the end caps and output shaft are stainless steel.


 A food-grade grease (Haloguard FG-2) is inside the sealed gearhead casing. No customer-supplied or user-maintained lubricant is needed.



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