The helmet valve is designed to combine controlled dosing and high flow rates without taking up excessive space. Its compact design makes it easy to integrate into existing production lines without major modifications, particularly in processes involving the handling and transfer of powders or granules.

This combination of high flow rate, controlled dosing and compact footprint sets it apart from conventional dosing solutions, which often require a compromise between these three requirements.

Front view of the Sofraden Bulk helmet valve

How the Helmet Valve Works

At the heart of the valve, a helmet-shaped, welded pendulum assembly regulates product flow. It is housed in a fully sealed enclosure that contains the material throughout dosing — particularly important for powders and granules. The helmet is operated by a rotary actuator, ensuring reliable, accurate and repeatable dosing from one cycle to the next. Optimized geometry provides precise flow control even at high throughput.

In summary:

  1. Welded pendulum helmet — regulates material flow
  2. Fully sealed enclosure — contains the material
  3. Rotary actuator — ensures reliable, accurate and repeatable dosing
  4. Optimized geometry — maintains flow control, even at high rates

Sizes and Materials
tailored to your application

Each valve is sized to suit your process. A range of sizes is available to match your upstream and downstream equipment, required flow rate and installation constraints.

Three material options are available depending on your product and operating environment:

  • Standard carbon steel
  • Stainless steel — for food processing and chemical applications
  • Abrasion-resistant steel — for highly abrasive or aggressive materials

Helmet Valve Technical Specifications

SpecificationValue
Available SizesEquivalent to DN200–DN400
Maximum Flow RateUp to 80 m³/h
Dosing Accuracy0.8 to 1.5 L
ATEX OptionAvailable

Robust Design and Reduced Maintenance

Designed for intensive use, the helmet valve is built to last. Its maintenance requirements are comparable to those of a standard process valve, with no special servicing constraints, helping maximize equipment availability.

Intensive Use

Excellent Durability

Standard Valve Maintenance

Design Your Helmet Valve with Sofraden Bulk

Engineering & Sizing

matched to your upstream/downstream equipment, flow rate and layout

Material Selection

carbon steel, stainless steel or abrasion-resistant steel to suit your product

30 Years of Bulk Handling Expertise

After-Sales Service

long-term technical support

Frequently Asked Questions About Helmet Valves

Up to 80 m³/h, making it suitable for high-flow dosing applications.

Equivalent to DN200–DN400, sized to suit your process.

0.8 to 1.5 L.

Standard carbon steel, stainless steel (food processing and chemicals) or abrasion-resistant steel (highly aggressive or abrasive materials).

Yes, an ATEX option is available.

No. Maintenance is comparable to that of a standard process valve, helping maximize uptime.

Compliance

ATEX

 
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