| Model | RD-30 |
| Size | 15 - 40 |
| Applicable fluid / temperature | Steam/Max. 184 Deg.C |
| Applicable primary pressure | Max. 1.0MPa |
| Adjustable secondary pressure | 0.02 - 0.2, 0.15 - 0.4MPa |
| Maximum reducing rate | 20 : 1 |
| Minimum pressure differential across the disc | 0.02MPa |
| Materials | Body : Cast iron Disc & Seat ring : Stainless steel Diaphragm : Synthetic rubber |
| End connection | Screwed JIS Rc |