FIRŠT FDV 532 and 533, 3-way diverting/changeover brass valves are intended for use in heating (solar, remote, house-heating etc.) and cooling installations, especially in heat pumps.
Valves are available in DN 20 size.
FIRŠT valves FDV 532C and FDV 533C are designed for use in heating or cooling systems or for use in different heating or cooling devices (e.g. heat pumps, HVAC systems).
Two types of connections are avaliable: external threads (FDV 532C) and compression fittings (FDV 533C).
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 50518 | FDV 532C 1" MMM | 20 | 8 | G 1" | 60 |
|
43 | 0,31 | |
| 50519 | FDV 532C 1¼" MMM | 20 | 8 | G 1¼" | 74 |
|
43 | 0,47 |
| CODE | TYPE | DN | Kvs | Connection | A | B | C | Weight (kg) | |
| 50520 | FDV 533C CPF 22mm CCC | 20 | 8 | CPF 22mm | 80 |
98 |
43 | 0,46 | |
| 50521 | FDV 533C CPF 28mm CCC | 20 | 8 | CPF 28mm | 80 |
100 |
43 | 0,57 |
| Nominal pressure: | PN 10 |
| Medium: |
water, glycol < 50%, water quality as per VDI 2035 |
| Media temperature: | min. +5°C, max. +80°C (briefly* +90°C) |
| Leakage (p=1 bar): | max. 0,1% Kvs |
| Max. diff. pressure: | 1 bar |
| Connections: |
G external thread (ISO 228-1)
compression fittings (EN 1254-2) |
| Valve body: | Brass, CW617N |
| Obturator: | PPS |
| Bushing: | PTFE |
| O-rings: | NBR |
| Sealing ring: | PA 66 + Q |
 S9000 2P ND |
 S8000 2P ND |
|
■
S9000 2P ND ■ S8000 2P ND |
