The FIRŠT FDV 231, 232 and 233 are compact diverting brass valves for use in small and medium sized heating and cooling installations. Valves are designed for switching between two heating circuits (diverting function) or two heating sources (changeover function). Valves are available in DN 15 – DN 32.
FIRŠT FDV 231, 232 and 233 are manual operated valves, designed for use in small and medium sized heating or cooling systems.
Three types of connections are available:
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41104 | FDV 231 DN15 Rp ½" FFF | 15 | 3 | Rp ½" | 36 | 72 | 45 | 0,41 | |
| 41105 | FDV 231 DN20 Rp ¾" FFF | 20 | 7 | Rp ¾" | 36 | 72 | 45 | 0,47 | |
| 41106 | FDV 231 DN25 Rp 1" FFF | 25 | 11 | Rp 1" | 41 | 82 | 45 | 0,51 | |
| 41107 | FDV 231 DN32 Rp 1¼" FFF | 32 | 15 | Rp 1¼" | 47 | 94 | 48 | 0,84 |
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41128 | FDV 232 DN15 G ¾" MMM | 15 | 3 | G ¾" | 36 | 72 | 45 | 0,39 | |
| 41128 | FDV 232 DN20 G 1" MMM | 20 | 7 | G 1" | 36 | 72 | 45 | 0,43 | |
| 41130 | FDV 232 DN25 G 1¼" MMM | 25 | 11 | G 1¼" | 41 | 82 | 45 | 0,58 | |
| 41131* | FDV 232 DN32 G 1½" MMM | 32 | 15 | G 1½" | 47 | 94 | 48 | 0,80 |
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41136 | FDV 233 DN20 C22mm CCC | 20 | 7 | CPF 22 mm | 36 | 72 | 45 | 0,48 | |
| 41137 | FDV 233 DN25 C28mm CCC | 25 | 11 | CPF 28 mm | 41 | 82 | 45 | 0,61 |
| Pressure class: | PN 10 |
| Medium: | water, glycol < 50% |
| Media temperature: | min. -10°C, max. +110°C |
| Leakage (Δ p=1 bar): | max. 0,2% Kvs |
| Max. diff. pressure: | 1 bar |
| Connections: |
Rp internal thread (EN 10226-1)
G external thread (ISO 228-1) compression fittings (EN 1254-2) |
| Valve body: | Brass, CW617N |
| Shaft and rotor: | Brass, CW617N |
| Bushing: | PTFE |
| O-Rings: |
EPDM,FKM |
Diverting to two heat users (radiator or water heater), or changeover between two heat sources (oil boiler or solid fuel boiler).
 ROTODIVERT-M |
 UNI D2P |
|
■
ROTODIVERT-M ■ UNI D2P |
