The FIRŠT FMV 131, 132 and 133 are compact brass valves for use in small
and medium sized heating and cooling installations, valves are available in DN 15 – DN 32.
FIRŠT rotary mixing valves are designed for use:
within commercial & domestic heating systems e.g. radiator, underfloor, radiant panel, mixing circuits, plant room, heat pumps, HVAC systems and in solar heating systems...
Three types of connections are available:
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41000 | FMV 131 DN15 Rp ½" FFF | 15 | 3 | Rp ½" | 36 | 72 | 45 | 0,42 | |
| 41001 | FMV 131 DN20 Rp ¾" FFF | 20 | 7 | Rp ¾" | 36 | 72 | 45 | 0,48 | |
| 41002 | FMV 131 DN25 Rp 1" FFF | 25 | 11 | Rp 1" | 41 | 82 | 45 | 0,52 | |
| 41003 | FMV 131 DN32 Rp 1¼" FFF | 32 | 15 | Rp 1¼" | 47 | 94 | 48 | 0,85 |
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41112 | FMV 132 DN15 G ¾" MMM | 15 | 3 | G ¾" | 36 | 72 | 45 | 0,40 | |
| 41113 | FMV 132 DN20 G 1" MMM | 20 | 7 | G 1" | 36 | 72 | 45 | 0,44 | |
| 41114 | FMV 132 DN25 G 1¼" MMM | 25 | 11 | G 1¼" | 41 | 82 | 45 | 0,59 | |
| 41115* | FMV 132 DN32 G 1½" MMM | 32 | 15 | G 1½" | 41 | 94 | 48 | 0,81 |
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 41120 | FMV 133 DN20 C22mm CCC | 20 | 7 | CPF 22 mm | 36 | 72 | 45 | 0,49 | |
| 41121 | FMV 133 DN25 C28mm CCC | 25 | 11 | CPF 28 mm | 41 | 82 | 45 | 0,62 |
| Pressure class: | PN 10 |
| Medium: | water, glycol < 50% |
| Media temperature: | min. -10°C, max. +110°C |
| Leakage (Δ p=1 bar): | max. 0,1% 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 |
