SMC Inline Ball Valve PVC Barb - 3/8 ID Barb x 3/8 ID Barb 6381690. SMC 6381690 - Inline Ball Valve PVC - 3/8 ID Barb x 3/8 ID Barb: Material of construction: Gray PVC Long Lever Handle 3/8 Barb x 3/8 Barb Buna-N o-ring Max Pressure: 125 PSI Max Temperature 140 F Ball Through Hole Diameter: 0.437 in Inline Shut Off Valves Irrigation Valves SMC Inline Ball Valve PVC Barb