Richter – KN PFA Lined Ball Valve

About Richter – KN PFA Lined Ball Valve

Heavy-Duty Corrosion Protection and Shut-Off

The Richter KN PFA-lined ball valve is engineered for reliable shut-off and control in aggressive, corrosive and metal-reactive chemical duties where metallic valves cannot maintain long-term sealing integrity. Its thick fluoropolymer lining, robust ductile iron or steel body, and ENVIPACK stem sealing system deliver dependable performance under thermal cycling, vacuum conditions and high-corrosion environments.

Designed as a modular valve family—including KN, KNA, KNR, KNAR and KA-N variants—the series supports shut-off, control and drain duties from a single platform. This allows engineers to standardise on one system while specifying different body configurations, end connections and automation options to suit process requirements. PFA or antistatic PFA-L linings provide proven permeation resistance and protect wetted parts in applications involving strong acids, halogenated compounds, pickling solutions and high-purity chemicals.

Its low operating torque, high dimensional stability and actuator compatibility help maintain operational reliability across chemical production, minerals processing and high-purity manufacturing environments.

With decades of proven performance in acid, HF, HNO₃, pickling, and ultrapure chemical services, the Richter KN series is the go-to choice when standard materials fall short.

For technicians, engineers and production managers, this means:

• Longer service life — Thick PFA/PFA-L lining and ENVIPACK stem sealing reduce chemical attack and minimise wear in corrosive or metal-reactive media.
• Reliable shut-off and control — Precision ball and seat geometry maintain tight isolation and stable throttling under varying process conditions.
• Lower maintenance effort — Zero-adjustment stem sealing and corrosion-resistant construction reduce intervention frequency and maintenance downtime.
• Improved plant availability — Durable lining anchoring and robust body design limit failures caused by blistering, permeation or thermal distortion.
• Operational flexibility — Modular variants (KN, KNA, KNR, KNAR, KA-N) allow one valve family to cover shut-off, control and drain applications across the plant.
• Reduced environmental risk — ENVIPACK low-emission stem sealing supports fugitive-emission compliance in hazardous and regulated areas.
• Simplified automation — Low torque requirements ensure compatibility with pneumatic and electric actuators without compromising sealing integrity.

Modular design. Superior sealing. Corrosion-proof peace of mind.

Download the Richter KN Technical Bulletin

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