Product Overview

01124/09 NA
DISCAL
AAIIRR
™ high-performance
automatic air vent
551 series
Product range
Code 551004 High-performance automatic air vent size 1/2”
Code R59681 Hygroscopic safety vent cap
Technical specifications
Materials: - body: brass
- cover: brass
- float: PP
- float guide: brass
- release valve stem: brass
- float lever: stainless steel
- spring: stainless steel
- hydraulic seals: EPDM
Medium: water, glycol solutions
Max. percentage of glycol: 50%
Max. working pressure: 150 psi (10 bar)
Max. discharge pressure: 150 psi (10 bar)
Temperature range: 32–250°F (0–120°C)
Connections: 1/2” NPT female
Dimensions
Function
DISCALAIR automatic air vents release air that forms in the
hydraulic circuits of heating and air conditioning systems, with
pressures to 150 psi.
The venting air discharge capacity is very high capable of
expelling over 4 standard cubic feet per minute (SCFM).
The circulation of fully de-aerated water or glycol-water mediums
enables the equipment to operate under optimum conditions, free
from noise, corrosion, localized overheating or mechanical
damage.
A
1/2"
B
4
3/8”
C
1 3/8”
D
2 3/16”
Weight (lb)
1.36
Code
551
004
D
B
A
C
T max 250∞F - P max 150 PSI
Made in Italy
CALEFFI
ACCREDITED
ISO 9001 No. 0003 ISO 9001 FM 21654