The SWD (air operated) and MWD (manual) are weir diaphragm valves with ISO ferrule connections. They are used for water, pure water and chemical liquids, with a PTFE/EPDM diaphragm and SUS316L body.
| Model | SWD1 to 5 (air operated), MWD10 to 50 (manual) |
| Working Fluid | Water, pure water, chemical liquids (fluids that do not corrode wetted part materials) |
| Working Pressure | 0 to 0.6 MPa |
| Proof Pressure (water) | 2.0 MPa |
| Fluid Temperature | 5 to 90 °C (allowable for 20 minutes or less during steam sterilization of 130 °C) |
| Ambient Operating Temperature | 0 to 60 °C |
| Port Size | 8A, 10A, 15A, 25A (1S), 40A (1.5S), 50A (2S) clamp fitting |
| Cv Value | 2.3 / 2.6 / 4.5 / 13 / 27 / 50 |
| Valve Seat Leakage | 0 cm³/min (water pressure) |
| Actuation Type (SWD) | NC / NO / Double acting |
| Material | Diaphragm PTFE/EPDM, body SS316L (buff polishing #400 or equiv., electrolytic polishing) |