Swagelok JN Series Brass Integral Bonnet Needle Valve B-4JAN2

The Swagelok JN Series Brass Integral Bonnet Needle Valve, model B-4JAN2, is a compact and reliable valve designed for precise flow control in instrumentation and process systems. Constructed from high-quality brass, it offers excellent corrosion resistance and durability in low to medium pressure applications. Key features include an integral bonnet design for enhanced safety and leak-tight performance, a regulating stem tip for fine flow adjustment, and Swagelok tube fitting connections for easy installation without welding. This valve is ideal for use in analytical instrumentation, gas sampling, and hydraulic systems where accurate throttling and shutoff are required. Advantages over similar products include Swagelok's renowned quality assurance, with superior sealing integrity and a wide operating temperature range, reducing maintenance needs and extending service life. Drawbacks may include limited suitability for high-pressure or highly corrosive environments compared to stainless steel variants. The valve's compact size makes it versatile for tight spaces, and it supports bidirectional flow. Based on image analysis, this unit appears new or unused, with protective blue caps on ports and no visible wear, serial or manufacturing marks like 'B85775' and 'JN 6-4JAK2' variants noted. For resources, refer to Swagelok's official JN Series datasheet (available at https://www.swagelok.com/downloads/webcatalogs/EN/MS-01-164.pdf) and model number decoder guide (search 'Swagelok valve model decoder' on swagelok.com). Estimated market price: $40-60 USD for new condition, based on comparable online listings from suppliers like eBay and Grainger.