MC Series

——————— Combination Jet/Vac Units ———————

MC Series

Combination JetVac

The GapVax MC Series unit, Combination JetVac, is a wet-only machine, equipped with a unitized water and debris tank and double sub-frame. Heavy-duty double acting single-lift cylinder provides a stable 50 degree dump angle. The MC series is also equipped with an 8' front-mounted, telescopic boom with dual lift cylinders, reaching 26' with a 180 degree rotation. With a wide variety of sizes available, this is an ideal candidate for any size municipality, water and sewer district, or contractor who is cleaning storm drains, catch basins and/or sewers.

GapVax offers a single-axle and a double-axle model. The smaller Combo unit gives you the choice of a 4-8 cubic yard debris body and a water tank capacity of 500-1,200 gallons. The Double Axle MC allows for a 8-13 cubic yard debris body and water tank of up to 2,000 gallons. Our custom-built units allow for various configurations to make for happy customers.

A Body Built to Last
  • Unitized, cylindrical, water/debris tank with full longsill sub-frame
  • 3/16" non-corroding stainless steel water compartment
  • 3/16" high strength carbon steel debris compartment
  • Full-opening rear door
  • Liquid tight seal of the rear door is always assured by a non-corroding stainless steel ring
  • Reversible tailgate gasket
  • Four independent, field-adjustable rear door locks
  • Adjustable rear door hinges
  • Dual lift cylinders to open the rear door
  • Material-backed air inlet
  • Top-loaded debris compartment for maximum debris capacity
  • Material loaded at rear of debris compartment for fast unloading
  • Debris compartment inlet diffuser significantly reduces material carry-over
The Smoothest Drive System
  • Mid-ship transfer case directs the power of the engine to the blower and hydraulic system
  • Transfer Case rated at 500 continuous horsepower
  • Transfer case mount is vibration isolated with four isolators
  • Oil level sight glass
  • A hot-shift clutch is available for remote activation
Power Vacuum Performance
  • Rotary lobe positive displacement blower
  • Minimum air slippage under vacuum
  • Direct shaft drive
  • Blower mount is vibration isolated by four isolators
  • Ultra quiet specifically engineered absorption silencer
  • Blower air connections isolated by rubber couplings
  • Silencer supports independent of blower
  • Oil sight glasses
  • Rated at 3,500 CFM and 18" of vacuum
  • Upgradable to 5,900 CFM or 27" of vacuum
  • Operator-friendly vacuum relief valves
  • Top loading body
  • Debris compartment inlet diffuser directs material from the airstream
  • 12" stainless steel floatball to shut off liquids from overloading
  • 10" low friction pipework
  • Specifically engineered centrifugal separator to force the dust and mist from the airstream into a large capacity compartment
  • Air passes through a final micro-screen strainer before entering the blower
GapVax Boom
  • Works as one with the chassis thanks to the GapVax structural steel torque box
  • Heavy-duty Dual lift cylinders
  • 180 degrees of rotation
  • Full 8" flow capacity
  • 3/16" tube design for minimum friction and very long compartment life
  • Field-adjustable seals
  • Standard 9' extension, 26' reach from center of the truck
Put It Together
  • The heavy-duty subframe is bolted to the chassis
  • 4" cross I-beams for maximum rigidity
  • Full body pivot pin through rear of sub-frame for excellent dumping stability
  • Double acting 3-stage dump cylinder substantially extends the life of the chassis suspension
  • Torque Stabilization System
Jetting System
  • High pressure water pump designed to use recycled water up to 300 micron
  • Rated at 50-100 GPM at 2,000 -3,000 PSI
  • Positive displacement Tri-plex plunger style pump
  • Uses "chevron" seals, no rope packing
  • Direct shaft drive from 8 or 10-bolt transmission PTO
  • Can operate independent of the vacuum system
Front Hose Reel
  • Hydraulically powered direct-drive gearbox
  • Variable speed control
  • Heavy-duty stainless steel water swivel
  • Positive action spooler lock
  • 4' (curbside) articulation from center of bearing
  • 180 degree rotation
  • Mounted on a heavy-duty 12" bearing with external grease fittings
  • Air operated brake
  • Operator-friendly control station
  • Easy and full engine access for maintenance
  • Integrated docking station allows full hose reel operation without moving the boom

In operation, vacuum conveys liquid material, sludge, rocks, gravel, sand, etc. through the Vacuum tubes and Boom 1 into the Debris Body 2. The material is top-loaded into the Debris Body where the majority of the debris drops out of the airstream 3 due to gravity and air-flow velocity reduction. A Debris Body Inlet Diffuser is also incorporated to direct material from the airstream. A 12" automatic stainless steel Floatball 4 is built in to shut off liquids from overfilling the system.

The airstream moves into a specially engineered Cyclone Separator 4 to centrifugally force mist from the airstream. The material drops out of the Cyclone and into the Collector Box 6 located directly below the Cyclone.

The airstream exits through the top of the Cyclone and passes through a final micro-screen strainer 7 which collects any material remaining in the airstream before it enters the Vacuum Pump 8. The airstream passes through the Vacuum Pump and exits through the special noise-atenuation Silencer 9. Air returned to the atmosphere is clean and free of particulates.

Water is stored in the stainless steel Water Tank 1. The filtered water enters the water tank via Water Fill, which is filtered through a 300 micron water filter 2 before entering the water tank. High pressure water from the Water Pump 3 is directed to the Front Hose Reel 4, the Body Flushout System 5, or the Handgun. Precise control of water pressure and flow is accomplished with the Multi-flow Valve 6 via the Multi-flow Control Valve located on the Operator Panel in the Front Control Box 7.

  • Noise and vibration dampening mounts on blower and transfer case
  • High efficiency, low maintenance, all steel air duct construction with cleanout access
  • "Sure Seal" stainless steel sealing rod on tailgate and dump chutes
  • Full bearing body pivot pin
  • Body and tailgate safety props
  • 6" Vacuum relief
  • 80 GPM/2,000 PSI Tri-lex water pump
  • Multi-flow water system
  • 3" Water fill line and anti-siphon and 2-1/2" Fire hose fitting
  • Curbside water level sight tube
  • 3" Water supply line with easy access filter and shutoff valve
  • Low point water drains
  • Front hose reel features include: Heavy duty frame mount front hose reel with high grounded clearance; 1-1/2" Hardened steel water swivel; hydraulically powered, direct-drive gearbox; boom hose docking station; and easy engine access
  • Control box: Weather tight front box
  • Front Control Box includes: Blower and water pump hour meters, water, vacuum, and hydraulic pressure gauges, joystick boom control, multi-flow water pressure control, reel brake, engine tachometer, throttle control, vacuum relief control
  • Additional Controls: Water flow, hose reel
  • Load Sense body hydraulic system
  • Easy access hydraulic controls
  • 65 Gallon hydraulic reservoir
  • Easy access galvanized tube trays
  • D.O.T. rear bumper
  • Vacuum pumps up to 6,600 CFM; 27" Hg
  • Water pump flow up to 100 GPM
  • Water pump pressure up to 3,000 PSI
  • Water fill filter
  • 1/4" Steel or stainless steel debris tank upgrade
  • Hydro-excavation package
  • Pump-off systems
  • Warning lights
  • Worklights
  • Toolboxes available in painted steel, aluminum, or polished stainless steel
  • Polished stainless steel tube trays
  • Heavy duty rear splash plate
  • Front hose reel footage counter
  • Low water level indicator
  • Boom remote lube manifold
  • Wireless remote or pendant remote for vac relief valve and throttle control
  • Heavy-duty pintle plate tow option
  • Tube trays: galvanized, aluminum, or stainless steel
  • Auxiliary lift axles
  • Patented auger unloading system
  • Body pressurization system
  • Sludge pump offload system
  • Wireless remote or pendant remote for vac relief valve throttle control
  • Tailgate mounted tube rack
  • Decant valve
  • Body flush-out system
  • Hydraulic tool circuit
  • Power-articulating front hose reel
  • Lateral hose reel kit
  • Interior polymer coating inside debris tank
  • Auxiliary Axle available on select models
  • Hi-Rail transportation system
  • Additional options available upon request


MC Series Configurator

Customize Your Own GapVax MC

1510 is our most popular double axle, 1007 is our most popular single axle

Debris Tank
Water Tank

MC chassis come with automatic transmissions

Body Options
Water Options
Offload Options

Includes 25' of flat lay hose

Mounted on at 6 o'clock Rear Door

Located on rear bumper

Boom Options
Hose Reel Options

Manual hose winder is standard. This upgrade is for an automatic winder

Highly recommended for 800' of sewer hose

Lighting Options

Super LED flashers are spaced around the truck

Storage Options

Traffic cones sold seperately

Chassis Options

Located on rear bumper

Gauges & Electronics Options

Advanced Package

Two full-color touchscreens that offer the operator visual monitoring of all operating functions and one touch operations. System alarms and interlocks allow for safe and efficient operation. Also supports remote vehicle diagnostics.

Remove advanced packages

Paint Options

Upcharge for metallic paint

Upcharge for metallic paint

Upcharge for metallic paint

Cabs are white by default. Customer supplied chassis may not need painted

Additional Requirements

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