Flange × Flange OS&Y Valve | Lansdale™
The Lansdale™ Flange × Flange OS&Y (Outside Stem & Yoke) Gate Valve is engineered for fire protection and water system use, offering visual valve position indication and reliable shutoff. This version uses two flanged connections for straightforward integration into standard piping networks.
Designed in OS&Y style, the rising stem clearly reveals whether the valve is open or closed, aiding inspections and system diagnostics. The valve features a resilient seated, EPDM-encapsulated wedge and robust packing to deliver tight sealing and long service life under demanding conditions. The flanged ends correspond to ANSI B16.1 Class 125 standards.
Complying with AWWA C515, this valve is UL Listed and FM Approved for fire protection systems. Its fusion-bonded epoxy coatings on internal and external surfaces satisfy AWWA C550 to resist corrosion.
Ideal for use in sprinkler risers, control assemblies, or firewall barrier lines, the Lansdale™ Flange × Flange OS&Y Valve provides dependable actuation visibility and reliable shutoff in fire protection installations.
