Low Pressure Brass Ball Valves Recommended Operating Pressure Between 200 Kpa And 1500 Kpa. Nominal Pressure 1.6 Mpa. Replacement Arm Code 333760 025. Plastic Ball: 332 P150. Brass Ball: 332 B150 Or 332 B200. Stainless Steel Ball: 332 Y150. Arm Size 10mm.