Flowrox™ valves and service offering

Valves pinch and slurry knife gate valves for flow control

Flowrox™ solutions entail almost 50 years of experience in flow control and elastomer technology. Flowrox™ pinch and slurry knife gate valves are designed for demanding process conditions in a variety of process industries, especially in the mining, minerals processing, metallurgy, construction, energy, environment, and chemical industries.

Flowrox valves

Valmet's vast flow control offering includes Flowrox™ pinch valves and slurry knife gate valves for demanding flow control applications. Flowrox pinch valves are suitable for both shut-off (isolation) and control duties. Each valve is engineered to perform reliably in challenging conditions where conventional valves often suffer from wear due to increased turbulence.

In processes involving abrasive slurries, having only one wear-resistant component in contact with the medium – the elastomer sleeve – is a significant advantage. This design minimizes maintenance needs and reduces spare part consumption. We also tailor our valve solutions to meet specific process requirements.

Flowrox™ heavy duty pinch valves

Flowrox PV, PVE and PVE/S heavy duty pinch valves are designed for shut off and control applications involving abrasive or corrosive slurries, powders or granular substances. In the open position, the valve is full bore with no flow restrictions. During closing, two pinch bars squeeze the valve sleeve shut on the center line. Bubble tight shut-off is provided even if solids have built up on the sleeve wall.

Flowrox™ PVG and PVEG pinch valves

Flowrox PVG and PVEG pinch valves are robust and cost effective with simple, single-sided closing mechanism. PVG valve has a strong valve body and opening tags in the sleeve as a standard. PVEG valve has a corrosion resistant and light-weight plastic body. Through the reliability and structure, both kinds of valves offer substantial savings based on improved performance, long service lifetime and low total cost of ownership. Flowrox PVG and PVEG valves are ideal for low cycle applications involv...

Flowrox™ slurry knife gate valves

Heavy duty slurry knife gate valve isolates flow even in the most demanding process conditions. The bi-directional flow tolerates backflow and elastomer sleeves on both sides of the gate provide tight shut off. Flowrox knife gate valve follows the concept of the ease of maintenance. The valve body is cast in one piece which eliminates the need for sealing between the body halves. Load distribution ring is integrated into the valve sleeves. The valve contains only two service parts; ring sleeves ...

Insights

Valmet has completed the divestment of its pump business to Metso

Oct 1, 2026

Valmet has completed the divestment of its pump business to Metso. The Flowrox trademark remains with Valmet, and Flowrox valves continue to be a core part of Valmet’s valve portfolio. ja sitten learn more

Unlock performance through competence with Valmet Learning Services

Oct 1, 2026

In the competitive board and paper industry, performance depends as much on people as on technology. Valmet Learning Services help mills turn skills into measurable results by strengthening competence for improved reliability, safety, and efficiency throughout the equipment lifecycle.

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Oct 1, 2026

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Oct 1, 2026

Solutions for Original Equipment Manufacturers

Reliable partner for OEMs

We manufacture and deliver original spare parts and components to all Flowrox hose pumps, progressive cavity pumps, valves and knife gate valves. Original and compatible replacement components to other brands of pumps and valves are also available through us.

We manufacture the spare parts ourselves, guaranteeing quality and availability. Flowrox spare parts are manufactured according to the highest quality standards with more than 20 years of experience.

Spare parts for Flowrox™ valves

We manufacture and deliver high-quality spare parts for all Flowrox™ valves. Genuine parts ensure that they are certified and specifically suited for your process. Elastic sleeve is the core of the Flowrox valve. It is the only part in contact with the process medium.

Valve maintenance and repairs

All valves must be repaired at some point. Incorrect repairs or the use of inferior parts create safety risks. That’s why being your reliability partner means we carefully plan maintenance and only use original spare parts to reduce the number of unexpected production breaks and failures. Quality repairs using original spare parts ensure that your valves meet their original specifications after maintenance and will reach their maximum lifetime.

Flowrox industries

Mining, metals and steel

Valmet's flow control and automation solutions are a reliable choice for mining, metals and steel industries.

Flow control for energy

Facing increasing pressures to keep your power generating process up to code? Valmet's valves help improve the productivity of your energy plant. We offer reliable valves, valve automation and services for the energy industry.

Construction

Valmet offers a range of heavy-duty flow control solutions for cement handling in the construction industry, as well as automation solutions that improve process control and reliability.

Flow control for pulp, paper, board and tissue

Valves and flow control play a vital part in pulp, paper, board and tissue production. The rapidly evolving industry is being reinvented to help create profitable and sustainable success. Through progressive thinking, creative design and solid manufacturing expertise, we are helping drive increasingly intelligent processes towards improved efficiency, reliability and environmental performance. Valmet has been a pioneer in the paper business since the very beginning, which is why today most of th...

Water and wastewater

Valmet provides flow control and automation solutions for the water and wastewater industry, ensuring safe, reliable operations and cost savings.

Chemical

Valmet has wide experience in flow control and automation solutions for the chemical industry. We cover the entire life cycle of processes, including new installations, rebuilds and services.

Flow control for sugar processing

Valmet provides high performance valves and pumps for each stage of the sugar production process.

Marine

Flow control for offshore

In harsh environments it’s critical to have valves, pumps and flow control services that ensure the safety and efficiency of the rig.

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Complete solutions for process industries

We specialize in flow control solutions for process industries. Flowrox™ valves and pumps are known for quality within the mining and metals industry. Our goal is to provide excellent service close to customers. For us, improving our customers’ process performance is crucial, and we want to do it in close cooperation with them. We help discover most efficient technologies and offer long-term solutions for our customers. Our professional global services ensure optimal and trouble-free operations.

Flowrox, formerly known as Larox Flowsys, has more than 45 years of experience operating within heavy industries. It started in 1977 when a company Larox was founded. Larox manufactured pressure filters and pinch valves for demanding conditions. Later on, pinch valve product line separated to its own company: Larox Flowsys. In 2011, Larox Flowsys renamed to Flowrox. In 2021, Neles acquired the valve and pump businesses of Flowrox. As of April 1, 2022 Neles is a Flow Control business line in Valmet.

We have ISO9001:2015 Quality and ISO14001:2015 Environment multisite certificates.