Swagelok® Bulk-Gas Diaphragm Valves (LD Series)
Swagelok 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.
Find More InformationSwagelok® LD series bulk-gas diaphragm valves are engineered for shutoff, bulk-gas distribution, and isolation services at working pressures up to 300 psig (20.6 bar). Three distinct diaphragms provide the ideal combination of strength, flexibility, and cycle life, while the all-metal design reinforces safety and durability.
Swagelok LD series valves also feature an innovative design that eliminates springs and threads in wetted areas, resulting in a cleaner operation and reducing contamination risks. In addition, the unique compensating stem tip design with a PCTFE insert promotes leak-tight shutoff and prevents damage from overtightening.
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 |
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