Watts RBFF Part of the RBFF Series Z100F 4NH Suitable for terraces Suitable for terraces After setting the feet of the pads in concrete and allowing time to cure the Access Tile pads can then be unscrewed and replaced should any units get damaged or worn out with repeated use Specifications Air Venting No Vent Body Material Brass Body Pattern Vertical Bottom Tapping Yes Bottom Tapping Size 1 2 IN Brand Watts Buy American Act Compliant NO Contact Rating Does Not Apply To Product EAN 098268461596 Fastfill Feature No Fill Tapping Size Does Not Apply To Product Float Chamber Connection Size Does Not Apply To Product Flow Rate Does Not Apply To Product Hydronic Item Type Boiler Fill Fitting Inlet Connection Size 1 2 IN Inlet Connection Size Metric 15 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free Not In Scope Maximum Operating Temperature Fahrenheit 250 Maximum Pressure PSI 125 Maximum Temperature Fahrenheit 250 Maximum Water Pressure PSI 125 Maximum Working Pressure PSI 125 Minimum Pressure PSI 0 It provides ease of service for expansion tanks and water pressure regulator valves in closed loop hot water heating systems