Product Overview

01135/07 GB
Replaces 01135/06 GB
High-performance automatic air vent
valves for solar heating systems
DISCAL
AAIIRR SOLAR
251 series
Product range
Code 251004 High-performance automatic air vent valve for solar heating systems size 1/2” F
Technical specifications
- Materials: - body brass EN 12165 CW617N, chrome plated
- cover: brass EN 12165 CW617N, chrome plated
- float: high resistance polymer
- float guide: brass EN 12164 CW614N
- obturator stem: dezincification resistant alloy
EN 12164 CW602N
- float lever: stainless steel
- spring: stainless steel
- hydraulic seals: high resistance elastomer
Medium: water, glycol solutions
Max percentage of glycol: 50%
Temperature range: -30–160°C
Max working pressure: 10 bar
Max discharge pressure: 10 bar
Connections: 1/2” F
Dimensions
Function
DISCALAIR devices are used in air-conditioning systems or in the phase of filling
and starting solar heating systems to discharge even large quantities of air that has
formed in the circuits. This function is performed even when there is considerable
pressure thanks to the special geometry of the discharge mechanism, which is
identical to the one on DISCAL 551 series deaerators.
This particular series of automatic air vent valves has been specifically designed to
work at high temperature with a glycol medium, which is typical of solar heating
systems.
cert. n ° 0003
ISO 9001
A
1/2"
B
114,5
C
35
D
55
Weight (kg)
0,62
Code
251
004
D
B
A
C
T max = 160°C / 320°F
P max = 10 bar / 150 psi
CALE FFI