Rotary valves with longer service life at lower price

Rotary valves is exposed to extremely high stresses in, for example, energy, mining, lime, cement and cellulose industry. Wood chips, pellets, fly ash, cement, lime and chemicals are some examples where cell feeders are used for reliable dosage and to simultaneously establish a barrier to combustion and gasification processes. This environment exposes the cell feeders to extremely aggressive abrasion that can lead to undesired shutdowns and production disturbances. Hardface provides customized rotary valves with abrasion resistant protection that optimizes service life and profitability.

Rotary valves produced as required

Hardface is a leading supplier and manufacturer of rotary valves, tailored to our customers’ needs and conditions at the production facilities. We build rotary valves based on the specifications provided by the customer or by Hardface engineers. The abrasion protection is adapted to the materials, flows and temperatures that the rotary valves will be exposed to. We deliver a fully customized rotary valves with an abrasion protection that optimizes production processes through extended maintenance cycles, more stable operation, increased efficiency and better profitability.

Renovation of existing rotary valves

Hardface also refurbishes demolished worn-out rotary valves and offers solutions tailored to our customers’ specific needs. Thanks to our knowledge and experience, we can offer the most cost effective solutions that multiply the life span and maintain our customers’ productivity without risk of downtime and high maintenance costs.

This is how it works

We always start with an inspection of the worn out rotary valves to find an optimized solution for abrasion protection. Thereafter, repairs and preparations are commenced. Sometimes, the rotary valves housing and gates has damages that needs to be repaired and machined to provide space for the abrasion protection. Depending on the needs of the customer, wear protection such as ceramics or cemented/soldered carbide that is processed according to predetermined dimensions and tolerances. Worn bearings are repaired or replaced. Thereafter, the cell feeder is tested to ensure optimal operation before the installation is completed at the customers’ facilities.

The result is a refurbished and upgraded rotary valves, fully adapted to the specific production process and at a price lower than the purchase of a new rotary valves without abrasion protection.

Do you want to know more?

For contact and more information, send an e-mail to or call +46 70 781 70 00.

About Hardface

Hardface works to improve efficiency and competitiveness within the Swedish industry. We do this by offering durable solutions in mechanical wear for longer service life, more efficient maintenance work and better profitability. With a wide range of durable materials, consulting services and training courses, we offer customized abrasion resistant solutions to the Swedish industry where high demands are placed on the durability of the production equipment.