Swagelok SS-6BK-MM-10 Bellows Valve

The Swagelok SS-6BK-MM-10 Bellows Valve is a stainless‑steel, two‑port valve from Swagelok’s B Series that uses a bellows seal to minimize fugitive emissions in gas‑handling lines. It features a 316 stainless steel body with a 321 stainless steel bellows and a PCTFE stem tip, plus a PTFE‑coated 316 SS gasket to maintain a soft, reliable seal. End connections are 6 mm Swagelok tube fittings on both ports, delivering a compact metric connection in a straight, 2‑way flow configuration designed for switching service. The valve is SC‑11 cleaned and is cataloged in configurations that include actuator options; this variant is listed as SS‑6BK‑MM‑10 (no actuator) in Swagelok’s lineup. Key ratings include a maximum room‑temperature pressure of 500 PSIG at 100°F (34.4 bar at 37°C), a maximum operating temperature of 200°F (93°C) and a minimum temperature of -20°F (-28°C); the flow coefficient is CV 0.3, enabling controlled gas flow at moderate pressures. Designed for general service with a gasketed seal and a conical stem tip, the SS‑6BK‑MM‑10 provides a compact, reliable isolation element suitable for instrumentation and analytical gas lines where tight sealing and compact 6 mm connections matter.