Watts 77S1 1 1 4 Part of the 77SI Series Z100F 6NH offering enhanced tear and puncture offering enhanced tear and puncture resistance Protects rooftop vent penetrations with a secure cast iron vent cap It is used in steam and liquid applications and it is furnished with a machined seat that allows the screen to be self aligning to assure a perfect fit Specifications Blowdown Outlet Connection Female Threaded Blowdown Outlet Size 3 4 IN Body Material Cast Iron Body Pattern Wye Brand Watts Buy American Act Compliant NO EAN 098268011739 Epoxy Coating Type None Gasket Material Fiber Filled NBR Inlet Connection Size 1 1 4 IN Inlet Connection Size Metric 32 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free NO Outlet Connection Size 1 1 4 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0220077 Plug Material Cast Iron Retainer Cover Material Cast Iron Retainer Cover Type Tapped with Closure Plug Screen Material Stainless Steel Screen Size 20 MESH Series 77SI Strainer Type Wye WOG Rating 400 PSI Specification Sheet 77SI