呼吸閥
RELIEF VALVES
MODEL 1200A Pressure/Vacuum Relief Valve
MODEL 1201B Pressure/Vacuum Relief Valve with Pressure Spring
MODEL 1202B Pressure/Vacuum Relief Valve with Vacuum Spring
MODEL 1203A Pressure/Vacuum Relief Valve with Pressure & Vacuum Springs
MODEL 1220A Pressure/Vacuum Relief Valve w/ Pipe-Away
MODEL 1221B Pressure/Vacuum Relief Valve w/ Pipe-Away & Pressure Spring
MODEL 1223A Pressure/Vacuum Relief Valve w/ Pipe-Away/Pressure & Vacuum Springs
MODEL 1760A Pressure Relief Valve w/ Pipe-away Feature and same-size inlet and outlet
MODEL 1720A Pressure/Vacuum Relief Valve w/ Pipe-away Feature and same-size
inlet and outlet
MODEL 1260A Pressure Relief Valve w/ Pipe-away Feature
MODEL 1261A Pressure Relief Valve w/Pipe-away and Pressure Spring
MODEL 2300A Pressure Relief Valve – Weight Loaded
MODEL 1300A Vacuum Relief Valve, Top Mount
MODEL 1360A Vacuum Relief Valve, Side Mount
MODEL 1361A Vacuum Relief Valve, Side Mount, Spring Loaded