S&RType 440
Flanged safety valve for water heating systems up to 120 °C according to DIN 4751 part 2. Technical data
- Standardized heating safety valve
- Suitable for water heating systems up to 120 °C
Flanged safety valve for water heating systems up to 120 °C according to DIN 4751 part 2. Technical data
Heating and building services engineering
| Set pressure (according to CE) | 1 - 10 bar | 14.5 - 145 psig |
| Temperature (according to CE) | up to 120 °C | up to 248 °F |
| Capacity | orifice F- to Q |
| Connections DIN EN 1092 | DN 20 - DN 150 | NPS 3/4 - NPS 6 |
| Flange class DIN EN 1092 | PN 16 | PN 16 |
| Body material | 0.6025, (0.7043, 1.0619) | gray cast iron, (Ductile Gr. 60-40-18, SA 216 WCB) |
| Narrowest flow diameter d₀ | 18 - 125 mm | 0.71 - 4.92 in |
| Narrowest flow area A₀ | 254 - 12272 mm² | 0.27 - 19.02 in² |
| Bellows material | EPDM |
| Seat gasket | Soft sealing EPDM |
