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Specialist suppliers to
the Blast Cleaning &
Coating Industry

Blast-One Weekly Tips
Tip #96
What is the number of turns required for optimum efficiency on a Thompson valve?

Have you ever wondered about EXACTLY how much abrasive is being pushed out of the blast machine?

It’s an interesting fact – and without measuring the supply of the abrasive you WILL be losing money – and possibly losing your PROFITS.

Well, there is good news – we can ensure your productivity, grain for grain, the consumption and efficiency of your blast system.

The answer is the Thompson Valve – it’s not new, and those who fit these metering valves to their blast system fully understand the benefits!

Here’s how it works

4 turns open means 100% abrasive economy (*using Australian GMA superior quality abrasive).

Thompson Valve
Thompson Valve on Blast Pot

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. The Thompson II Valve™ gives almost instantaneous starting and stopping control.

Abrasive cut off and blowdown option

A remote abrasive cut-off is available for Thompson Valve™ 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 blast hose and to blow the blasting area clean of abrasive. Just flick the optional switch at the Deadman handle.

Watch the video on adjusting your Abrasive Metering Valve


Also – if you’re focused upon results – the Blast-One Media Flow Detector is an ideal fitting to your blast system:

  • For all types of media
  • Requires little maintenance due to no moving parts
  • Operates from 24 Vdc
  • Relay contact output
  • Push-button setup
  • LED indicators
Abrasive Consumption Monitor

The Blast-One Media Flow Detector is a media flow detector for pressure-type abrasive blasting machines. The sensor uses a charge-coupled amplifier that is connected to a sensing ring placed in the flow path of the abrasive blasting media. Each particle passing the ring shares a minute charge with the ring, converting it to a voltage used to activate the output relay contact.

Contact Blast-One to talk to our team of experts for more information on these systems.


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