Butterfly Valve Options Single and 2-piece Stem Extensions Applications:Buried valves, out of reach valves Type-57P Lug Butterfly Valve Applications:Isolation valves, control valves, chemical processing, water treatment, water features, fountains, aquariums, landfills, swimming pools, power plants, mining, transportation Size:2″ – 14″ Body Materials:PVC/CPVC/PP/PVDFSeat Materials:EPDM/FKM/Nitrile Disc Materials:PVC/CPVC/PP/PVDF 2″ Square Operating Nuts Applications:Below grade valve installations, municipalities, water parks, water features Chain Operators Applications:Overhead locations Plasgear™ Speed Handle™ Applications: Aquariums, Landfills, Chemical processing, Mining Plasgear™ Operator Applications:Butterfly valves in corrosive environments P-Series Limit Switch Applications:Chemical Processing, Water & Wastewater, Landfills, Irrigation, Food Processing, Mining Westlock Limit Switches Applications:Chemical Processing, Water & Wastewater, Landfills, Irrigation, Food Processing, Mining