VTTB – 3-way zone valves with bypass, DN15-20, fixed kvs
The valves in the range VTTB are used to control heating and cooling in fan-coil or chilled beams applications. They are intended to be used together with the thermal RTAOM… actuators.
Technical description
| Pressure rating |
PN16 (1.6 MPa) |
| Connection |
External pipe thread |
| Flow characteristics |
Linear |
| Leakage |
0 % when the valve is closed |
| Media temperature |
2…95°C |
| Media |
Hot or cold water. Also refrigerants (max. 40 % glycol). |
| Stroke |
2.5mm |
| Kvs |
0.25 – 6.0 |
| Adapter |
Pre-mounted for the RTAOM… actuators |
| Body |
Brass |
| Seat |
PPO+GP |
| O-rings |
FKM |
Product range
| VTTB15-0,25 |
Connection
G½”
|
Kvs
A-AB: 0.25 / B-AB: 0.25
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB15-0,4 |
Connection
G½”
|
Kvs
A-AB: 0.4 / B-AB: 0.4
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB15-0,6 |
Connection
G½”
|
Kvs
A-AB: 0.6 / B-AB: 0.6
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB15-1,0 |
Connection
G½”
|
Kvs
A-AB: 1 / B-AB: 0.8
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB15-1,6 |
Connection
G½”
|
Kvs
A-AB: 1.6 / B-AB: 1
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB20-2,5 |
Connection
G¾”
|
Kvs
A-AB: 2.5 / B-AB: 1.6
|
Max. diff. pressure
A-AB: 250 kPa / B-AB: 83 kPa
|
| VTTB20-4,0 |
Connection
G¾”
|
Kvs
A-AB: 4 / B-AB: 2.5
|
Max. diff. pressure
A-AB: 100 kPa / B-AB: 33 kPa
|
| VTTB20-6,0 |
Connection
G¾”
|
Kvs
A-AB: 6 / B-AB: 4
|
Max. diff. pressure
A-AB: 100 kPa / B-AB: 33 kPa
|
