View Catalogue  
Request Catalogue  

3 Way ZVT Lift and Lay Valves

3 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.

Typical Applications

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.

Function

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.

Technical Data

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.

Material

Body :     Brass

Spindle :     Stainless Steel

Plug :     Brass

Seat :     Brass

Packing Box :     Brass with O-Rings made of EPDM

 

 

3 Products

Follow Us