SMEPAC-tested dosing valves

Components

SMEPAC-tested dosing valves

Name: Dosing valves
Brand: HECHT Technology
Availability: PreOrder

Components

Description

Dosing valves for accurate and controlled product dosing

Dosing valves from HECHT are valves that enable accurate dosing and shut-off of powders, granulates and bulk materials within industrial processes, combining a reliable shut-off function with controlled product flow for consistent and reproducible dosing. Thanks to a minimal dead-leg of less than 2 mL in the valve geometry, dust loss after dosing is minimised, with product recovery above 99% and high CIP efficiency. The valves offer an accuracy of ±0.5% and are available in three dosing volumes: Compact (1-50 µL per stroke), Standard (50-500 µL per stroke) and Plus (500-5000 µL per stroke), with built-in digital feedback. Cleaning is performed automatically via a standardised CIP protocol in 15 to 20 minutes without manual disassembly, and the valves are suitable for OEB 1-5 applications thanks to the closed system with zero fugitive emissions. With a ceramic seat ring, the valve lasts 5 to 10 years and is GMP Annex 1 (2022) compliant and GAMP 5 validatable.

They are an essential component of processes where accuracy, product quality, and process control are paramount.

See also: dosing valve

Customer benefits

Process control: precise regulation of product flow
Flexibility: suitable for various products and applications
Efficiency: less product loss and faster processing
Reliability: stable operation, even with difficult products
Hygiene: suitable for GMP and food applications
High accuracy: reproducible dosing down to the gram

Frequently asked questions about dosing valves

What is a dosing valve and why is µL precision important?

A dosing valve is a specialised shut-off valve for precise liquid dosing. µL precision is important because: (1) reproducible batch quality, (2) minimal product loss, (3) GMP-compliant record-keeping, (4) cost savings.

What is dead-leg and why does <2 mL matter?

Dead-leg is residual volume in the valve geometry. <2 mL matters because: (1) minimal dust loss after dosing, (2) product recovery >99%, (3) high CIP efficiency, (4) guaranteed batch integrity.

How accurate is the dosing valve?

±0.5% deviation. Compact: 1–50 µL per stroke. Standard: 50–500 µL per stroke. Plus: 500–5000 µL per stroke. Digital feedback built-in.

Is the dosing valve GMP compliant?

Yes. GMP Annex 1 (2022) compliant, GAMP 5 validation available. FDA 21 CFR Part 11 dosing log built-in. Validation: 2–3 weeks.

How much dust loss occurs after dosing?

Minimal. Dead-leg <2 mL. Product recovery >99%. Dust-free integration. Zero fugitive emission to the environment.

How easy is CIP cleaning?

Very easy. Automatic flushing system. Standardised CIP protocol. Cleaning time: 15–20 minutes. No manual disassembly required.

Can the dosing valve handle OEB 4–5 activities?

Yes. OEB 1–5 compliant. Closed system with zero fugitive emissions. Dust-free dosing. Suitable for critical pharmaceutical operations.

How long is the service life of the dosing valve?

Very long. Ceramic seat ring. Minimal wear. 5–10 years of operation proven. Maintenance: annual calibration.

Enquire now

Applications

The 500 Series is used for applications including:

Mining and mineral processing (including lithium)
Chemical industry (bulk and fine chemicals)
Food industry (continuous filtration processes)
Industrial separation of suspensions with high solids concentrations
Processes requiring continuous production (24/7 operation)

Product overview

Continue verticale filtrerende centrifuge
De Serie 500 is een continue werkende centrifuge met verticale as en filtratieprincipe, speciaal ontwikkeld voor processen met hoge capaciteit en stabiele productstromen.

Belangrijkste kenmerken:

Continue procesvoering (geen batch) → maximale throughput
Geschikt voor vaste stof concentraties van ca. 30–80%
Verwerking van deeltjesgroottes van ca. 50 – 5000 µm
Hoge capaciteit in verhouding tot compact formaat
Instelbare verblijftijd via feed rate en aandrijving

Werking:

Continue toevoer van slurry
Filtratie in roterende trommel
Vorming en ontwatering van filtercake
Optionele wasstappen en gescheiden afvoer van vloeistoffasen

Technologies and models

Depending on product characteristics and the desired accuracy, various dosing principles are possible:

Vibrating dosing valves

Ensures an even product flow
Prevents bridging and caking
Suitable for fine and free-flowing powders

Valve or slide gates with dosing function

For controlled opening and closing
Suitable for both coarse and fine dosing

Flexible dosing systems (tubing principle

No mechanical parts in the product flow
Gentle and hygienic dosing
Highly suitable for sensitive products

Processing options

Dosing of bulk solids in weighing and filling systems
Continuous or batch product feed
Integration with weighing systems for accurate final dosing
Handling of free-flowing or sticky products
Dust-free product handling

Key benefits

High accuracy: reproducible dosing down to the gram
Process control: precise regulation of product flow
Flexibility: suitable for various products and applications
Efficiency: less product loss and faster processing
Reliability: stable operation, even with difficult products
Hygiene: suitable for GMP and food applications

Technical specifications (approximate)

Capacity: depends on the product and application
Accuracy: up to a few grams
Operation: batch or continuous
Drive: pneumatic, electric, or mechanical
Material: stainless steel (304 / 316L), special alloys

Options:

Vibration motor for improved flow
Integration with weighing systems
ATEX-compliant version
CIP/SIP cleaning
Automation and PLC control
Hygienic design (GMP)

Why choose Hecht Technology?

Hecht Technology combines process technology with expertise in precise dosing and safe product handling.

For dosing valves, we offer:

Custom solutions tailored to the product and process
Integration into complete dosing and filling lines
Support for GMP, ATEX, and validation
Optimization of accuracy and efficiency

Typical applications

Doseren van grondstoffen in productieprocessen
Vullen van containers, vaten en big bags
Toevoeren van ingrediënten in meng- of reactoren
Precisiedosering in farmaceutische en chemische productie
Continue toevoer in transport- en verwerkingssystemen

Would you like more information?

Bent u op zoek naar een centrifuge-oplossing voor uw proces? Neem contact op met onze specialisten voor advies op maat.