Swagelok SS-43S4-A 2-Way Ball Valve 1/4 Inch Tube

Swagelok SS-43S4-A is a stainless steel, one-piece 40G-series two-way ball valve designed for instrument-line service. It accepts 1/4 in. tube fittings and features a straight-pattern flow path that provides a full bore when open and tight shut-off when closed. With a Cv of 1.4 and a pressure rating up to 3,000 psi, this valve delivers dependable flow control in high-pressure gas or liquid lines. The SS designation indicates stainless steel construction for compatibility with common process fluids, and the 40G-series design emphasizes a compact, robust profile suitable for tight spaces in instrumentation panels and manifolds. The valve is intended to isolate or bleed portions of 1/4 in. tubing loops and sampling lines, making it a common choice for instrumentation rooms, labs, and industrial environments where reliable quarter-turn shut-off is required.