Technical specifications, materials, ordering info, dimensions, cleaning and packaging guidelines for Swagelok DL and DS series diaphragm valves.
The DL and DS series diaphragm valves are all‑metal, full‑port devices that operate from vacuum up to 3500 psig (241 bar) and temperatures from –73 °C to 121 °C (–100 °F to 250 °F). The DL series closes with a quarter‑turn of the handle, while the DS series requires about two and a half turns and provides a higher flow coefficient.
The document lists ordering numbers, dimensional data for various connection types, material specifications for components, and detailed cleaning, packaging, and high‑purity handling procedures. It also includes safety notes for oxygen‑enriched systems and references to Swagelok’s process standards. This manual is written in Chinese.
| Maximum pressure rating | 3500 psig (241 bar) |
|---|---|
| Operating temperature range | –73 °C to 121 °C (–100 °F to 250 °F) |
| Flow coefficient (Cv) – DL series | 0.156 (4.0)0.14 |
| Handle turns to close – DL series | Quarter turn |
| Handle turns to close – DS series | ≈2.5 turns |
The valves are rated up to 3500 psig (241 bar).
A DL series valve closes with a quarter turn of the handle.
They operate from –73 °C to 121 °C (–100 °F to 250 °F).