Technical Data; Ambient Temperature - Resol VA20 Mode D'emploi

VA20
Area of application:
The 2-port valve RESOL VA20 is used for switching fl ow
rates in solar thermal and heat pump technology.
Characteristics:
The valve RESOL VA20 is delivered closed when current-
less. The initial state of the valve can be easily inverted. It
is operated by an electro-thermic actuator (with manual
emergency operation) and has an operation time of appro-
ximately 3 min. This way there is no back stroke within the
tube system throughout volume fl ow regulation. RESOL
VA20 valve comes with connection screws made of brass.
Technical data actuator
Power supply:
230 V~, 50 ... 60 Hz
Power consumption max. 2,5 W
i max: 150 mA

Ambient temperature:

max. 50 °C
Spring force: 125 N
Stroke: 4,5 mm
Protection type:
IP 42 when mounted horizontally
IP 44 when mounted vertically to the top
Protection class: II
Actuation time: ca. 3 min.
Degree of pollution: 2
Factory setting: normally open
Technical data valve:
Temperature range: up to 120 °C,
temporarily up to 140 °C
Material:
Vlave body: corrosion-resistant red bronze
Internal parts: brass and corrosion resistant steel
Seal: EPDM
Maximum pressure: 10 bar
Connection thread:
VA20: ½", ¾", 1" and 1¼"
DN 15
L 95
H 21,5
Rp 1/2
SW 30
k (m3/h) 1,35
vs
EN
20 25 32
106 118 135
21,5 23 23
3/4 1 1 1/4
37 47 52
2,50 4,20 5,80
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