The Swagelok WHITEY B-1VS4 Integral Bonnet Needle Valve is a high-quality valve designed for various industrial applications. This manual valve features a 1/4" union compression brass construction, making it durable and reliable. The valve operates by a manual mechanism, allowing for precise control of fluid flow. The brass body and stem materials ensure long-lasting performance, while the compression end types provide easy installation and maintenance. With its brand reputation and specific dimensions, this needle valve is a valuable addition to any hydraulic, pneumatic, pump, or plumbing system. Never used.