RS Brand Stainless Steel Screwed End Ball Valves for the control of flow., Full port 1/4 Inch to 4 Inch (DN8 to DN100). W.P: 1000 WOG (PN63). W.T: -20°C to 200°C. Investment casting. Blow-out proof stem. Locking device. ISO 5211 Mounting pad. Thread type: