Defender Series Skid Tanks

UPF’s Defender™ skid tank is the number one choice tank for brush trucks and fire skid unit builders for the fire service. UPF’s Defender 1 allows for a completely custom water skid tank or foam skid tank, while the Defender 2CE and Defender 3E skid tanks are the most popular pre-engineered tank for a fire skid unit on the market today. A Defender™ skid tank can be delivered directly to you or to the builder of your choice to install the pump and complete the fire skid unit. In addition, all Defender™ skid tanks have the UPF Poly-Tank® warranty and are NFPA compliant.

Defender 1 Skid Tank Water & Foam

The Defender™ 1 custom skid tank allows the ultimate flexibility for skid tank design. It can be dimensionally sized to fit your exact application and is available in capacities ranging from 50 to 1,000 gallons. Special clearance notches, wheel well notches, welded hose trays, storage compartments, multiple internal foam cells, half-length and full-length skid frames with platforms are just a few of the many options available.

When mounted on an optional custom skid base, you can easily install the Defender™ 1directly into your brush truck, utility body, or flatbed. Like all UPF Poly-Tanks®, the Defender™1 custom skid tank is fabricated from our PT2E™ resin. The Defender™ 1 skid tank is only available from UPF, the most significant water and foam skid tank manufacturer in the fire service industry. For various tank mounting and restraint guidelines, please contact UPF Engineering Department by calling 800-638-8265 (extension 3).

Defender™ 1 Water Skid Tank
(1) 50 – 1000 US gallons. 
(1) Lift points 
(1) Fill tower with removable screen and cover. Blue or black tower and lid. 
(1) External sump with anti-swirl plate and female NPT drains fitting or internal sump with female NPT drain in the wall. 
(1) 4″ vent overflow 
(1) 1 1/2″ diffused female NPT tank fill port. 
(1) 3″ female NPT tank suction port internally piped to the sump. 
(1) Liquid level external sight tube (*Upcharge for integral sight gauge) 
(1) Black textured or smooth black material (textured not recommended if tank to be painted) 

Defender™ 1 Foam Skid Tank
(1) Minimum capacity 5 gallons. 
(1) Fill tower with removable hinged cover, removable screen, and anti-foaming fill tube. Tower and lid available as color-coded to foam type. (Green = class A, Yellow = class B) 
(1) Drill & Tap for Gtts vent 
(1) Fill fitting up to 3″ NPT – (Sub-surface) 
(1) Suction fitting up to 4″ NPT 
(1) Optional removable fill tower.

Defender™ 1 Water Skid Tank Option

  • Integral Foam Cell.  Minimum 5 gallons. (Water tank only) 
  • Drill & Tap for Liquid Level Sensor or Switch 
  • Sight Gauge, Additional 
  • Sight Tube, Additional 
  • Fill, Additional 
  • Drain, Additional 
  • Notch up to 10 ft^3 
  • Notch over 10 ft^3 per cubic ft 
  • 3″ High Channel Half Skid per ft^2 
  • 4″ High Channel Half Skid per ft^2 
  • 5″ High Channel Half Skid per ft^2 
  • 3″ High Channel Full Skid per ft^2 
  • 4″ High Channel Full Skid per ft^ 
  • 5″ High Channel Full Skid per ft^2 
  • Skid Rail per ft up to 7″ 
  • Under Tank Storage Skid with Drawers. 
  • Pump Platform – (Not recommended for larger pumps) 
  • Pump Platform with Side Gussets (Not recommended for larger pumps) 
  • Mounting Block or Pad 
  • Brass inserts for equipment mounting. (Requires mounting block) 
  • Reel Block Set (2) (Up to 57.5″) (Includes 4 track nuts per set) 
  • Tank Mounting Tab w/ Stiffener – (Maximum tank size 400 US gallons) 
  • 3 Hole Tank Mounting Block 
  • 6 Hole Tank Mounting Block (Mounting bracket/kit also available) 
  • Hose Storage Open Top Bin 
  • Internal Foam Cell 5-500 gal. 
  • Vent valve, 2″ Gits 
  • Foam Suction Port w/ Dip tube 
  • Foam fill port (sub-surface) 
  • Shrink Wrap

Defender 2CE Skid Tank

The Defender™ 2C skid tank features a standard storage cavity that converts easily to a 12-gallon foam cell and is available in 200, 250, 300, and 400-gallon capacities. Like all UPF Poly-Tanks®, the Defender™2C Stock Skid Tank is manufactured from specially formulated PT2E™ resin, making it a perfect choice for your brush truck skid unit. 

The Defender™2C comes standard with a built-in liquid level sight tube, booster reel mounting blocks, an internal sump for easier mounting, and a 29″ x 11″ x 9″ storage compartment that offers the option of converting to a 12-gallon foam cell, with the purchase of the optional foam cell kit. 

The UPF Poly-Tank® warranty backs all UPF drop-in skid tanks. UPF is the largest manufacturer of Poly-Tanks® in the fire service industry, building more tanks than all other tank manufacturers combined. 

Defender™ 2CE Skid Tank

(1) 200, 250. 300- and 400-Gallon Capacities 
(1) Standard sizes (footprint of 60″ L x 46″ W) 
(1) Black textured finish (painting is not recommended) 
(1) 3″ female NPT tank suction port piped internally to the sump. 
(1) 1 1/2″ female NPT tank fill port 
(1) 8″ round fill tower with 3″ vent/overflow 
(1) Sump with anti-swirl plate and ¾” female NPT drain port with plug. 
(1) External liquid level sight tube 
(1) (2) Tank-mounting tabs 
(1) Lift Points 
(1) Full-length booster reel mounting blocks with sliding “T” nut connections 
(1) Note: The compartment can be converted to a 12-gallon foam cell: includes (2) 1/2″ FNPT ports 

Defender™ 2CE Options

  • Aluminum Compartment Lid 
  • Foam Cell Conversion Kit 
  • 3″ Channel Full Skid 
  • 4″ Channel Full Skid 
  • 5″ Channel Full Skid 
  • 3″ Channel Half Skid 
  • 4″ Channel Half Skid 
  • 5″ Channel Half Skid 
  • Pump Platform 
  • Hose Tray, Loose 
  • Mounting Block, for Hose Tray 

Defender 3E - Long Bed Skid Tank

The Defender™3E skid tank fits in a standard 8ft pick-up truck bed. Additionally, it is a tank that allows you to combine standardization and simplicity with performance and price in one package that allows for a quick attack on any brush, trash, or car fire. The Defender™3E Long Bed skid tank is available in 150, 200, 225, 300, and 400-gallon capacities. Each tank includes a ¾” thick integrated base plate with a pump mounting area. This base design combined will allow for a completed vehicle with a lower center of gravity than tanks with skid spacers. 

This standard skid tank is equipped with a hidden internal sump which allows it to be mounted directly on a flatbed or slid directly into the bed of most pick-up or utility bodies. Like all UPF Poly-Tanks®, the Defender™3E skid tank is manufactured from specially formulated PT2E™ resin. The Defender 3E skid tank is an excellent choice for your brush truck skid unit. 

Defender™ 3E Long Bed Skid Tank 
(1) 150, 200, 225, 250, 300, and 400 US Gallon Capacities 
(1) Standard tank sizes utilize a 96″ long base, including a pump platform. 
(1) Pump mounting platform side gussets 
(1) 4 lifting points. 
(1) Full-length booster reel mounting blocks with sliding nut connections 
(1) Black textured finish. (Painting is not recommended) 
(1) 8″ round fill tower with 3″ vent/overflow pipe. 
(1) External liquid level sight tube 
(1) 2-1/2″ female NPT tank suction port piped internally to the sump. 
(1) 1-1/2″ female NPT tank fill port (diffused) 
(1) 3/4″ female NPT drain port with plug. 
(1) 150, 200. 225, 250, 300, and 400-Gallon Capacities

Defender™ 3E Fire Skid Unit

  • 3″ Channel Full Skid 
  • 4″ Channel Full Skid 
  • 5″ Channel Full Skid 
  • Skid Rail per foot up to 7″ 
  • Under Tank Storage Skid 
  • Poly Tray for Storage Skid (requires under tank storage option) 
  • Poly Hose tray mounted to either or both sides of the tank. 
  • Drop-in Foam Cell (5, 8, 10 Gal with 1/2″ suction pick up tube) (Not all available in all tank sizes due to height) 
  • Gravity Feed Foam Kit 
  • Gravity Feed Foam Kit Installed 

Defender 3E Skid Tank- Short Bed

UPF has developed Defender™ 3E Short Bed tanks and accessories for a brush truck skid unit installed on HD pick-ups with short beds.  These skid tanks are available in 150 and 200-gallon capacities. The Defender 3E Short Bed tanks offer the same options as the Defender 3E Long bed tanks. The Defender Short Bed skid tanks are an excellent choice for your brush truck skid unit that will be mounted in a pick-up truck with a short bed. 

Defender™ Short Bed Skid Tank
(1) 150 and 200 US Gallon Capacities 
(1) Standard tank sizes utilize a 74″ long base, including a pump platform. (Consult truck bed dimensions in the online body builder’s book to confirm internal clearance in your (1) specific truck bed) 
(1) Pump mounting platform side gussets 
(1) 4 lifting points. 
(1) Full-length universal booster reel mounting blocks with sliding nut connections. (Fits most 
(1) Hannay standard booster reels and Hannay 4000 series hose reels.) 
(1) Black textured finish. (Painting is not recommended) 
(1) 8″ round fill tower with 3″ vent/overflow pipe. 
(1) External liquid level sight tube 
(1) 2-1/2″ female NPT tank suction port piped internally to the sump. 
(1) 1-1/2″ female NPT tank fill port (diffused) 
(1) 3/4″ female NPT drain port with plug.

Defender™ 3E – Short Bed Fire Skid Unit

  • 3″ Channel Full Skid 
  • 4″ Channel Full Skid 
  • 5″ Channel Full Skid 
  • Skid Rail per foot up to 7″ 
  • Under Tank Storage Skid 
  • Poly Tray for Storage Skid (requires under tank storage option) 
  • Poly Hose tray mounted to either or both sides of the tank. 
  • Drop-in Foam Cell (5, 8, 10 Gal with ½” suction pick up tube) 
  • Gravity Feed Foam Kit 
  • Gravity Feed Foam Kit Installed

UPF Poly Skid Tank for Brush Truck Skid Unit Warranty

For normal fire department applications, the tank shall have a limited lifetime warranty that provides warranty service for the life of the fire apparatus in which the tank is installed. Warranties are transferable if the apparatus ownership changes by requesting the transfer from UPF. In addition, in applications where the tank will be subject to severe conditions, the tank may have a warranty unique to the application clearly defined for each such application. 

Also, you can get a copy of the UPF warranty by e-mailing us at [email protected] or visit the product support page for more information.

UPF Poly Skid Tank for Brush Truck Skid Unit Warranty

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