MA FRICO VALVE TVV20 25 20210721

Product Specification Sheet • EN0B1764GE23 R0421 • Subject to change 1
Centra
EN0B1764GE23 R0421
Linear Valve
VDE/VXE/VYE
Small Linear Valves
APPLICATION
These small linear valves are used in combination with small
electric linear valve actuators and thermoelectric actuators
for the control of hot and/or chilled water for fan coil units
and small reheaters/recoolers in electric/electronic
temperature control systems.
SPECIAL FEATURES
• Dezincification-resistant yellow brass
• No maintenance work is required
• Wide standardized range of k
VS
values
• Reduced k
VS
values in the bypass to facilitate hydronic
balancing
• Range of fittings available for different connections
(compression, soldered, threaded)
• Compatible with two-piece Conex compression fittings
• Small size allows installation where space is limited
• Long stroke results in a high-quality characteristic
• Soft seat for low leakage rate and high rangeability
• High close-off pressure
TECHNICAL DATA
Media
Medium: Water, with max. 50 % glycol
Water quality: according to VDI 2035
Water temperature: 2...120 °C
Connection/Sizes
Valve size: DN15 (G
1
/
2
"),
DN20 (G
3
/
4"
),
DN25 (G1
1
/
4
")
Specifications
Model: Two-way: VDE
Three-way: VXE
Three-way with bypass: VYE
Operation: All models stem up to close,
port A to B / AB
Nominal pressure rating: PN 16
Capacity index (k
VS
): See chapter „Flow capacities
and close-off pressure ratings“
Close-off pressures:
Leakage rate: ≤0.02 % of k
VS
Port connection: Conical and flat sealing
connections in standard sizes
Modulating valves
Stroke: 6.5 mm
Closure distance: 18 mm
Characteristics: 2-way:
- modified equal %
3-way:
- A-AB modified equal %;
- B-AB linear
ON/OFF valves
Stroke: 2.5 mm
Closure distance: 14 mm
Snap-on Valves
Stroke: 2.5 mm
Closure distance: 5 mm