Metering-grade rotor pump filling machines, engineered around your product

We are a Chinese manufacturer specialising in rotor pump filling technology — the pump is the metering element. We built China's first servo rotor pump filling machine in 2018, and we do not make piston fillers.

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±0.5%Filling accuracy (error ≤1 g)
40,000+Units delivered
50–300,000 cStViscosity coverage
5–300,000 mlFill volume range

Product lines

From a single filling head to a complete line — matched to your product's viscosity, particle size and container.

Flagship

Rotor pump filling machines

Servo-driven, metering-grade rotor pump. ±0.5% accuracy for high-viscosity pastes, sauces with particles and large-particle products. GTX series, 5–300,000 ml.

Low viscosity

Gear pump filling machines

For thin liquids such as milk, beverages and edible oil — stable, high-speed volumetric filling.

Special products

Screw down-press fillers

For products that need a different discharge principle — assessed against your product sample.

Turnkey

Custom filling lines

Filling + bagging, capping, labelling, coding and conveying, engineered to your container and line speed. OEM / private label supported.

Component

LX series metering rotor pumps

Our metering-grade pump supplied as a component (LX-9 / LX-18 / LX-36 / LX-60) — for OEMs building their own filling equipment.

Hygiene

CIP-capable design

CIP-capable rotor pump production validated in dairy projects (2020) — suitable for dairy, beverage and aseptic-adjacent lines.

Why customers choose Grounton Pak

A specialist manufacturer, not a trading company — you deal with the people who design and build the machine.

A different technology route

We focus on metering-grade rotor pumps for filling. That is a different standard and design intent from the conveying-grade rotor pumps common in the industry. We do not manufacture piston pumps.

Accuracy that pays for itself

±0.5% fill accuracy, error ≤1 g — reducing product give-away and material waste on every single container, shift after shift.

Proven at scale

40,000+ units delivered and 10,000+ fluid application profiles accumulated since entering the rotor pump field, with customers including major dairy and food groups in China.

Modular configuration

Pump head (three-lobe, single-lobe, waist, twin-lobe, five-lobe) × hopper (standard, agitated, heated, square-mouth) × filling valve (blow-spray, full-immersion, sauce cut-off) — configured to your product.

Recognised manufacturer

National High-Tech Enterprise (2024), National Sci-Tech SME (2025), Provincial Innovative SME (2024), 32 patents, licensed for import and export.

Export-ready support

Export packing, English documentation, remote commissioning guidance and spare parts supply for international customers.

Selected technology partners & customers in China

Our filling equipment is in production at leading Chinese dairy, food-service and condiment groups — including Mengniu, Yili, Junlebao, Haidilao and Lee Kum Kee — and covers more than 70% of domestic dairy plants.

Note for buyers: references are provided in good faith. For a specific project we can share the applicable machine configuration, accepted test data and delivery scope under NDA.

Applications

Dairy · beverages · sauces and condiments · prepared foods · bakery and snacks · pet food · cosmetics and personal care · household chemicals · adhesives and coatings · pharmaceuticals.

Dairy & beverages

Milk, yoghurt, juice and syrups — CIP-capable, high-accuracy filling on fast lines.

Sauces, jams & fillings

Chilli sauce, bean paste, jam, dressings and fillings with particles — the rotor pump's core advantage.

Chemicals & cosmetics

Creams, gels, adhesives and coatings — 304/316L wetted parts, configurable discharge.

Frequently asked questions

What is a metering-grade rotor pump filling machine?

A filling machine that uses a servo-driven rotor pump as the metering element instead of a piston. It achieves ±0.5% accuracy (error ≤1 g) and handles 50–300,000 cSt products, including pastes with large particles.

Can it handle high-viscosity products with particles?

Yes. With no piston or narrow valve seat to block or crush solids, the rotor pump fills pastes and particle-containing products reliably.

What fill range do the GTX machines cover?

5 ml to 300,000 ml per fill across GTX-900, GTX-1800, GTX-3000/3600 and GTX-6000. See the specification table.

Do you build complete lines?

Yes — filling combined with bagging, capping, labelling and coding, engineered around your container and line speed. OEM and private label supported.

What do you need to quote?

Product type and viscosity, fill volume, required output (containers/hour), container and cap type, power supply and hygiene requirements. Email wangaiguo@grountonpak.com.

Send us your product and container details

We usually reply within one business day with a configuration proposal and quotation.

Email: wangaiguo@grountonpak.com

Hebei Guangteng Machinery Equipment Co., Ltd. · Botou, Cangzhou, Hebei, China