2 Way ZVT Lift and Lay Valves
2 Way Control Valves, DN25–DN40
- Rangeability 50:1
- For differential pressure up to 250kPa
- No leakage when valve is closed
- For water and refrigerants (max. 30% glycol)
- Fluid Temperature
- Pressure Class PN16
The valves in the range ZTVB / ZTRB are used to control heating and cooling in climate, heating and ventilation systems. They are intended to be used together with the RVAZ4 actuators.
The control valves in the ZTVB/ZTRB range are available as 2- and 3-way versions. Body and plug in brass, spindle in stainless steel and O-ring made of EPDM. The vavles have linear flow characterisitcs.
The 2-way valve is closed when the spindle is in its highest position and completely open when the spindle is in its lowest position.
The 3-way valve is closed between port A and port AB
(The ports opposite to one another) when the spindle is in its highest position. In this position, the valve is also open between the bottom port B and the common supply port AB. When the spindle is in its lowest position, the 3-way valve is completely open between port A and port AB and consequently closed between the bottom port B and the common port AB.
The valves are used to control hot and cold water in heating, ventilation and climate systems. They can also control refrigerants in for example liquid recovery systems.
Pressure Class : PN16 (1.6 Mpa)
Connection : Internal pipe thread
Flow Characteristics : Linear
Rangeability : 50:1
Stroke : 0% when the valve is closed
Leakage : Control 0% when the valve is closed
Media : Hot or Cold water. Also refrigerant (max. 30% glycol)
Fluid Temperature : 1...110°C*
* THE MAX. TEMPERATURE IS 140°C FOR THE VALVES AND 110°C FOR THE RVAZ4 ACTUATORS.
Body : Brass
Spindle : Stainless Steel
Plug : Brass
Seat : Brass
Packing Box : Brass with O-Rings made of EPDM
Excl. VAT: £222.60
Incl. VAT: £267.12
Excl. VAT: £207.90
Incl. VAT: £249.48