Wilkins RK12-600XL | 1/2 Inches Pressure Reducing Valve Repair KitThe Wilkins RK12 600XL is a 1 2 Inches Pressure Reducing Valve Repair Kit designed for maintaining the Zurn RK12 600XL 600 Series valves in residential and commercial applications. Key Specifications: Size: 1 2 Inches Maximum Pressure: 300 PSI Maximum Temperature: 140 Degrees F Notable Certifications: ASSE 1003, IAPMO, NSF 61 Connection Type: 1 2 FNPT Union x FNPT NOTICE: Do not use with water that is unsafe or of unknown quality without adequate