DEF Equipment

DEF Equipment — Pumps, Tanks & Dispensers

Diesel Exhaust Fluid (DEF) is required for all modern diesel engines with SCR (Selective Catalytic Reduction) emissions systems. Westech Equipment carries a complete selection of DEF handling equipment for everything from single-truck operations to large fleet fueling depots.

Our DEF equipment lineup includes DEF transfer pumps for drum, tote, and bulk tank dispensing, DEF submersible pumps, DEF diaphragm pumps, DEF stub pumps, DEF hand pumps, DEF hose and nozzle accessories, and DEF drum/tote couplers, inserts, and mounting brackets. Every product we sell for DEF is manufactured with compatible materials — DEF is corrosive to many standard fuel handling components, so using purpose-built DEF equipment is critical.

Frequently Asked Questions

Q: Why do I need DEF-specific equipment?
A: DEF is corrosive to many standard fuel handling materials including copper, brass, carbon steel, and certain plastics. Using equipment that isn't DEF-compatible will cause contamination and corrosion. Every pump, hose, nozzle, and fitting in a DEF system must be manufactured with compatible materials.

Q: How should I store DEF?
A: DEF should be stored in a cool, dry location away from direct sunlight. It freezes at 12°F (-11°C) and degrades above 86°F (30°C). Heated storage is recommended for cold climates. Shelf life is approximately 12-24 months when stored properly.

Q: What size DEF dispensing system do I need?
A: It depends on your fleet size. For a few trucks, a drum pump kit may be sufficient. For larger fleets, a tote-based or bulk tank system is more practical.

Q: Can I use a regular fuel pump for DEF?
A: No. Standard fuel pumps use materials that are incompatible with DEF and will corrode. Always use purpose-built DEF pumps and equipment.