Swagelok® Bulk-Gas Diaphragm Valves (LD Series)
LD series bulk gas diaphragm valves offer a combination of strength, flexibility, and cycle life to support a wide range of ultrahigh-purity shutoff, bulk-gas distribution, and isolation applications.
Request More InformationLD series diaphragm valves have a welded diaphragm construction using three diaphragms welded to the stem to prevent leakage. No use of springs or threads in wetted areas enable cleaner operation, and a unique stem tip design promotes leak-tight shutoff. Flow coefficients up to 13 and a variety of body materials and configurations are available to meet a range of design specifications.
Specifications
| Working Pressure | Up to 300 psig (20.6 bar) |
| Temperature | –20° to 300°F (–28° to 148°C) |
| Flow Coefficient | Up to 13 |
| Body Materials | CF3M cast stainless steel, forged and bar stock 316L stainless steel |
| Diaphragm Material | 316L stainless steel |
| End Connections | |
| Type | Swagelok® tube fitting, male VCR® face seal fitting, female NPT, female ISO, tube extension |
| Size | 1/4 to 1 in.; 12 to 25 mm |
LD Series Bulk-Gas Diaphragm Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Features: Working pressures up to 300 psig (20.6 bar); Shutoff, bulk-gas distribution, and isolation service; Cast, forged, and bar stock stainless steel body material; 1/4 to 1 in. and 12 to 25 mm end connections
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