FOR BOILER RECEIVER TANKS. FLOAT OPERATED. PROPORTIONAL FEED ACTION. SOFT SEAT PROVIDES POSITIVE SEAL. SEAL BETWEEN FLOAT CHAMBER AND VALVE CHAMBER IS NOT A POSITIVE SEAL. MAXIMUM WATER SUPPLY PRESSURE 100 PSI (7 KG/CM2). MAXIMUM INLET WATER TEMPERATURE 120°F (49°C). MAXIMUM VESSEL PRESSURE 35 PSI (2. 5 KG/CM2). MADE IN THE USA .