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Butterfly valve
manualisolationfor chemicals

butterfly valve
butterfly valve
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Characteristics

Type
butterfly
Operation
manual
Function
isolation
Media
for chemicals
Body
threaded, seat, concentric, PTFE, rubber
Applications
industrial
Associated function
backflow
Other characteristics
unidirectional

Description

Fully Lined Concentric Butterfly Valve The Fully Lined Concentric Butterfly Valves is designed to maintain a seal against bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal, i.e., gasket, 0o-ring, precision machined, and a flat valve face on the upstream and downstream sides of the valve, valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side. Features – ISO5211 direct mounting pad for easy automation – Isolation height according to plant prescription – Dirt scraper prevents moisture penetrating into the shaft area – Three PTFE impregnated SS316L bearings are provided for precision alignment of the disc-shaft – 3 layers sealing system ensures environment protection – PTFE seat and rubber seat version interchangeable each other• PTFE-liner for chemically toxic and highly corrosive media, rubber liner for various of industry applications – Silicon rubber energized back behind PTFE seat makes the sealing between liner and disc stable and offer a wide range of temperature – One-piece disc-shaft design reduces the valve torque and increases Kv – PTFE or rubber lined disc design option avoids high cost by expensive metal in corrosive applications – Bubble-tight shut of at full pressure rating
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.