How to choose right butterfly valve: corrosion, abrasion, clogging, contamination, vacuum & gas handling
Hand and pneumatic operated butterfly valves are quick opening valves that consist of a metal disc (lined where necessary) with its pivot axes at right angles to the direction of flow in the pipe.
They are leaktight on all liquids, slurries, granular materials, powders, pastes, gases acids etc…
Seat and disc are easily replaceable without any special tools. The wide range of available elastomer materials enables an appropriate selection for each application and is guarantee of perfect resistance to corrosion and abrasion.
PERFORMANCE FEATURES
RESILIENT SEATED CONCEPT
• Lower risk of damage due to tuberculation then metal on metal concept valve
• Long seat life: no metallic inserts to strain the elastomers
• Body valve designed and manufactured in one or two parts
• Special two parts body valve for quick and easy replacement of seat and disc
• No maintenance
• Long durability
• Epoxy painted, valve bodies protected with an anti-acid varnish
METAL ON METAL CONCEPT
• Metal seated valve for high temperature
• Body valve designed and manufactured in one part
• PTFE seated valve only available for temperature up to 200°
DISC MATERIALS
• Hard rubber lined A216 WCB carbon steel
• PFA lined
• Rilsan lined
• HALAR/ECTFE lined 304 or 316 or marine 316 Stainless steel
• SS 304; SS 316; SS 316 L
• Ductile iron
• Hastelloy C
• Aluminum bronze
• Duplex
• PVDF, PPH
