Mini Valve, Soft Tip, 1/4 NPT Male – 1/4 NPT Female Angle, 316 SS, 0.172 in. Orifice, 1 in. Round Knurled Handle. Compact size valve built for maximum durability and robust performance in the toughest applications. 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability. Soft tip valves feature a patented Acetal non-rotating soft tip stem, and a back-up metal-to-metal seal U.S. Patent 6,820,857.