Thompson II abrasive metering valve, 1 1/4" or 1 1/2"

The Novablast abrasive metering valve FSV 1 1/4″ is a universally applicable metering valve for the precise, stepless adjustment of abrasive flow on 1 1/4″ pressure blast pots. It is suitable for all common abrasives, designed for robust professional continuous use, and can be combined with compatible accessories directly on the product page.

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 |  Item no. 70093400
Regular price 47.846,00 Kč
incl. VAT / CHF excl. VAT, Shipping is calculated at checkout.
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Delivery time: approx. 4–6 business days

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Leasing

With leasing, the product is made available to the lessee for use in return for regular lease payments. The asset is recognized on the lessor’s balance sheet. Lease payments can generally be claimed as operating expenses for tax purposes. These are gross payments, and VAT is charged throughout the entire term. Once the agreed minimum lease term has expired, purchasing the product is generally possible.

Hire purchase

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NovaBlast Thompson II – pneumatic precision metering valve in 1 1/4" or 1 1/2"

The NovaBlast Thompson II is a pneumatically actuated abrasive metering valve for professional pressure blasting machines and demanding industrial applications. It combines precise abrasive metering with a fast shut-off function and is available with either a 1 1/4" or 1 1/2" connection.

The valve opens and closes via the blasting machine's pneumatic remote control. When the dead-man hand lever is released, the abrasive flow is stopped simultaneously and the material path is reliably shut off. This reduces carryover, unnecessary abrasive consumption and uncontrolled material feed.

Compared with the first Thompson generation, the design was developed for faster response, finer metering, easier maintenance and longer service life. The smaller seat angle reduces the risk of abrasive becoming trapped under the piston. At the same time, the center section is structurally separated from the cylinder, making the liner, piston seal and valve seat easier to access.


Your benefits at a glance

✅ Pneumatically actuated precision metering valve
✅ Choice of 1 1/4" or 1 1/2" connection
✅ Fast opening and closing via the remote control
✅ Finely adjustable abrasive quantity
✅ Reduced material carryover
✅ Improved valve seat for reduced wear
✅ Wear parts are easily accessible for maintenance
✅ Suitable for large, heavily used pressure blasting machines
✅ Supports economical abrasive consumption
✅ For corrosion protection, shipyards and industrial applications

📦 Scope of delivery

✔ NovaBlast Thompson II metering valve
✔ Connection size according to selected variant
✔ Pneumatic actuation unit
✔ Adjustment mechanism for abrasive metering
✔ Valve body and internal wear components

Technical data

Feature 1 1/4" 1 1/2"
Valve type Thompson II Thompson II
Connection size 1 1/4 inches 1 1/2 inches
Item number 70093400 70093600
Actuation Pneumatic Pneumatic
Function Metering and shut-off Metering and shut-off

Operating principle

The pneumatic remote control moves the piston inside the valve. When starting, the valve opens the material path; when stopping, the abrasive flow is immediately interrupted. The set position determines how much abrasive is fed into the compressed-air stream.


1 1/4" or 1 1/2"?

The appropriate connection size depends on the blast pot, pipeline, desired material flow rate, and existing system. The 1-1/2-inch version is particularly suitable for large blast pots and high abrasive volumes. The 1-1/4-inch version covers many classic professional pressure blasting systems.


Typical Applications

✔ Corrosion protection and surface preparation
✔ Steel and bridge construction
✔ Shipyards and shipbuilding
✔ Tank and vessel construction
✔ Mechanical and plant engineering
✔ Industrial maintenance
✔ Contract blasting operations
✔ Multi-outlet systems and large-scale installations

Maintenance and Care

✔ Check pneumatic lines and connections for leaks
✔ Inspect the piston, liner, and valve seat
✔ Check the seals regularly
✔ Keep the adjustment mechanism clean
✔ Use only dry abrasive
✔ Replace wear parts in good time
✔ Test the valve for safe operation after maintenance
📌 Note:
The Thompson II must be operated with a compatible pneumatic remote control system and professionally integrated into the blast system.

FAQ – Frequently Asked Questions

What distinguishes Thompson I from Thompson II?
The Thompson II was further developed for faster response, finer metering, easier maintenance, and longer service life.

Why are there two connection sizes?
So that the valve can be adapted to different pot sizes, pipelines, and material flow rates.

Is the valve suitable for large blast pots?
Yes. The 1-1/2-inch version is particularly suitable for large systems and high material volumes.

Does the valve require a remote control system?
Yes, a compatible remote-control system is required for pneumatic operation.

Can the abrasive flow rate be finely adjusted?
Yes. That is one of the key strengths of the Thompson II valve.

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