1/2" PVC TU BALL VALVE VITON TYPE 546 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. 1/2" PVC TU BALL VALVE VITON TYPE 546 Specifications 1/2" PVC TU BALL VALVE VITON TYPE 546 How to Use Contact your Norchem rep for step-by-step instructions. Tweet