Swagelok SS-BNV51-20 Bellows-Valve 1/4 In FEM

SS-BNV51-20 is a Swagelok 316L stainless steel high-purity bellows-sealed valve, 1/4 in, with a VCR metal gasket face-seal connection on a female end (FEM). The bellows-seal, packless design isolates the valve stem to minimize leak paths, making it well suited for high-purity gas lines and vacuum systems. Constructed from 316L stainless steel for corrosion resistance and cleanability, this valve supports reliable shutoff in critical environments and pairs with Swagelok VCR fittings for a leak-tight metal-to-metal interface. Typical applications include semiconductor processing, analytical instrumentation, and other clean manufacturing or research settings where fugitive emissions must be minimized and gas or liquid purity maintained.