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Compel Groupgroup

Sandblasting Guns & Kits

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A sandblasting gun is a primary pneumatic tool for industrial surface preparation, scale cleaning, and rust removal. Compel supplies industrial sandblasting kits and air blast guns built for maintenance workshops, fabrication bays, and production facilities. Our inventory spans compact gravity feed units, siphon tube setups, and mobile pressurized blast tanks designed for heavy cleaning schedules. Whether you need a portable sandblasting kit for spot repair or hardware compatible with delicate media like a soda blaster, you will find direct-feed pneumatic tools to suit your line.

Industrial operations depend on Compel for reliable MRO delivery and clear mechanical specifications. Every sandblaster kit lists exact inlet pressure limits, nozzle geometries, and feed mechanisms upfront, helping you maintain consistent blast profiles and reduce abrasive consumption across shop operations.

Selecting the Feed Type: Gravity, Siphon, or Pressurized Tank

Handheld gravity feed hoppers deliver continuous media flow straight to the nozzle via top-mounted reservoirs. They work best for spot rust repair, dust cleaning, and localized paint removal. Siphon feed guns draw abrasive through a pick-up tube from a separate reservoir, allowing longer run times during glass etching and surface prep without constant hopper refills.

For large-area prep, a pressurized sandblaster kit featuring a wheeled 38 L (10 gallon) tank supplies abrasive under constant line pressure up to 8.6 bar (125 psi).

  • Gravity feed: Top-mounted hopper for small surface patches, rust removal, and quick spot inspections.
  • Siphon feed: Remote draw via siphon tube for extended etching, surface keying, and batch part treatment.
  • Pressurized tank: Wheeled 38 L capacity units operating up to 8.6 bar (125 psi) for continuous floor and structural prep.

Air Pressure Thresholds and Flow Control

Standard pneumatic guns operate at 6.2 bar (90 psi). Maintaining line pressure around this threshold ensures steady media velocity without fracturing fragile abrasives or causing excessive tip wear. High-capacity mobile systems scale up to 8.6 bar (125 psi) maximum pressure when stripping heavy industrial scale.

Look for models with built-in adjustable flow valves. Regulating media flow directly at the gun prevents feed clogging and lets operators tune abrasive volume for delicate tasks like glass etching or non-destructive soda blasting.

Nozzle Material Selection and Tip Sizing

Media wear directly determines how often you replace blast tips. Standard 6.5 mm steel nozzles handle basic maintenance and intermittent rust removal. For continuous production lines or high-abrasion media, choose guns equipped with boron carbide nozzle tips. Boron carbide offers superior wear resistance against hard abrasives, maintaining consistent blast pattern diameter over long operational shifts.

  • Boron carbide tips: High wear resistance for aggressive media, continuous surface prep, and high-volume shop use.
  • Steel nozzles: 6.5 mm standard bore for general maintenance and rust removal at 6.2 bar (90 psi).
  • Aluminum alloy bodies: Lightweight handheld housings that reduce operator fatigue during long blast cycles.

Buying guide

Choosing Sandblasting Guns & Kits

What operating air pressure is required for a standard pneumatic sandblasting gun?
Most handheld pneumatic sandblasting guns require a nominal supply pressure of 6.2 bar (90 psi) to achieve proper abrasive acceleration. Pressurized blast machines with integrated tanks can operate up to 8.6 bar (125 psi) for aggressive scale removal. Always ensure your air delivery system matches both the tool pressure rating and CFM demand.
When should I choose a boron carbide nozzle tip over standard steel?
Choose boron carbide nozzle tips for high-volume cycles or when spraying aggressive, hard media. Boron carbide resists abrasive erosion significantly longer than steel, which prevents the orifice from enlarging and dropping your blast velocity. Standard 6.5 mm steel nozzles remain practical for occasional spot repair and light maintenance rust removal.
Can these sandblasting guns be used as a soda blaster for sensitive surfaces?
Yes, models with adjustable abrasive flow rate control can operate as a soda blaster when paired with appropriate sodium bicarbonate media. Lower the delivery flow and calibrate operating air pressure around 6.2 bar (90 psi) to remove grease, paint, or carbon deposits without altering the underlying base substrate.
How do I choose between a gravity feed gun and a siphon feed sandblaster kit?
Select a gravity feed gun with a mounted hopper for quick spot rust repairs and limited touch-ups, as abrasive capacity is bounded by the top cup. Choose a siphon feed kit if you need to blast continuously from a bulk media bucket or tank, particularly for glass etching and larger surface prep runs.
What abrasive capacity do mobile pressurized sandblasting kits offer?
Mobile pressurized units in this category feature tank capacities up to 38 L (10 gallons), while heavy-duty handheld models accept abrasive reservoirs greater than 20 L. Confirm your abrasive mesh size matches the nozzle bore to prevent bridging and feed line blockages.