Kohler K-2971-KS-NA High Flow Rite-Temp Pressure Balancing Valve with Stops, Not Applicable High 13.0gpm flow rate - ideal for multiple outlet installations or rapid bath filling Utilizes existing K-306-KS valve trim - completely interchangeable Provides anti-scald protection and temperature regulation at flow rates as low as 1.75 gpm; far below federally mandated standards of 25 gpm Superior resistance to aggressive or treated water conditions or mineral build-up. Forged brass one piece valve body for long term reliability Factory calibrated comfort setting at 104 degrees Fahrenheit. 3/4" NPT connections. Minimum operating pressure 15 psi