Instructions

High-performance automatic air vent

38572.01

Function

The DISCALAIR is a high performance automatic air vent that is capable of

releasing large amounts of air from hydronic systems. The venting mechanism

is the same proven design that is used in Caleffi's 551 series air separators,

providing years of reliable service.

Product range

Code 551004A DISCALAIR high performance automatic air vent

size 1/2” NPT female

Technical specification

Connections:

1/2”

NPT female

Materials: - Body brass

- Float PP

- Stem brass

- Seals EPDM

Suitable fluids: water, glycol solution

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)

www.caleffi.com

CALEFFI

551 Series

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CALEFFI www.caleffi.com High-performance automatic air vent © Copyright 2009 Calef fi 38572.01 551 Series Function The DISCALAIR is a high performance automatic air vent that is capable of releasing large amounts of air from hydronic systems. The venting mechanism is the same proven design that is used in Caleffi's 551 series air separators, providing years of reliable service.
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SAFETY INSTRUCTION This safety alert symbol will be used in this manual to draw attention to safety related instructions. When used, the safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD. CAUTION: All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.
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Installation The DISCALAIR automatic air vent, series 551, must be installed in a vertical position. They are typically installed on the manifolds, on the rising main and in the points of the circuit where air bubbles are concentrated and must be vented. Attention The installation of the valve in places subject to freezing is not recommended. In the case of installation in locations that cannot be inspected, it is recommended to replace the upper caps with the safety hygroscopic caps, code 59681.
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CALEFFI Caleffi North America, Inc. 3883 West Milwaukee Road Milwaukee, WI 53208 T: 414.238.2360 F: 414.238.