The Swagelok SS42GS4 40G Series Ball Valve is a high-quality, durable valve suitable for various media such as water, oil, fuel, air, and wastewater. Made of stainless steel with a WOG rating of 2500 psi, this manual valve operates reliably and efficiently. With a diameter of 1/4 inches and following the National Pipe Taper (NPT) technical standard, this ball valve is a reliable choice for industrial applications requiring precise control of fluids and gases.