Thompson Valve II

SKU: P-GV2152


  • Abrasive Metering Valve
  • Meters the flow of blasting grit, garnet abrasive sand
  • Rugged, simple, bolted construction
  • 1 ¼” (32 mm) thread abrasive inlet port
  • Features 1” (25 mm) thread side-cleanout port
  • Heavy duty tungsten carbide sleeve
  • Specify air connection size
  • Threaded-plunger metering design with air actuated operation
  • The Thompson II Valve uses HF BTC blast coupling – not included (order separately)
  • The Thompson Valve 2 is suitable for use with all approved blasting abrasives
  • Fit most sand blast hoppers, blast pots or abrasive blasting machines



The Schmidt Thompson Valve for Abrasive Metering is an ingeniously simple abrasive metering valve to meter your abrasive flow much more accurately than any conventional valve.

As the heart of the abrasive blasting machine, the Thompson Valve 2 acts as the carburetor to allow abrasive media to flow grain by grain into the high pressure air stream. Arguably the best abrasive blasting valve ever created. A must for all sandblast equipment.

As a brainchild of Mr Bob Thompson, the “Thompson Valve 2” carries his legendary name

This valve is the second in the Thompson valve series and retrofits any sandblast pot or blast hopper currently fitted with Thompson valve series 1

In fact when Thompson Valves are retrofitted onto an old Blast Machine, operators tell us that the pot lasts twice as long, before running out!

The Virtual Position Indicator (VPI) provides a visual gauge of how far the thomson valve is open. Graduation marks make precise measuring simple – no more counting turns of the knob.

These normally closed “thompson valves” are standard on multiple outlet abrasive Blast machines & sand blasters so each operator can work independently of any other.

The Thompson II Valve is a fail-safe valve, giving optimum abrasive blasting operator safety.

The distinct blue knob helps with identification of the thompson valve 2 at a distance.

On shut off, it cuts the abrasive flow to the nozzle and seals the blasting hopper or blast tank at the same instant.

This is the metering valve of choice for abrasive blasting specialists.

Fast Start/Stop for Spot Blasting

For those projects where you must only blast small areas or rust spots, you’ll appreciate the very fast on/off control the Thompson II Valve allows.

Blast a spot there and another over here without “dragging” the blast and damaging the coating in between.

Can be fitted to most slurry blasters, mist blasters, soda blasters, amphi-blasters, vapour blasters

The Thompson II Valve gives almost instantaneous starting and stopping control

Abrasive blast Cut off and Blowdown Option

A remote abrasive cut-off is available for Thompson Valve II systems, allowing you to stop the flow of abrasive, while continuing to blow air only.

This provides a quick and easy way to clear the abrasive blast or shot blast hose and to blow the blasting area clean of abrasive – Just flick the optional switch at the Deadman handle.

Contact BlastOne for a Schmidt Thompson II Valve Parts diagram or spare parts list

Thompson Valve 2 repair kits & rebuild kits are available

For a list if other abrasive sand valve, please click Abrasive Metering Valves

Additional information

Weight N/A
Dimensions N/A
Nipple Size

1-1/4'' x 1-1/4'', 1-1/2'' x 1-1/2'', 2" x 2"

Document Downloads

Thompson Valve II Brochure

Parts Breakdown

Part Number

Related Products