The M3SV-N is the smallest valve in Beswick's slide sleeve family — an ultra-miniature 2-way on/off valve that threads directly into an M3-ported fluid circuit with no panel mounting required. At roughly 4.25 grams and 20 mm overall length, it is built for applications where every gram and millimeter counts: portable fuel cells, dental handpiece controls, semiconductor gas panels, and aerospace instrumentation. The non-venting slide sleeve design provides a simple push-pull manual actuation with no preferred flow direction.

What seal material should I specify?

The standard Buna-N (Nitrile) O-ring covers most air, water, and light fuel applications. Choose EPDM for hot water and steam compatibility, FKM (Viton) for aggressive chemicals and higher temperatures, or Silicone for breathable air and medical gas service. The captured O-ring gland design makes seal replacement straightforward when fluid compatibility changes.