Caleffi Solar 251003A Discal® Air Seperator 3/4" NPT

Description

CALEFFI
Air separators for solar heating systems DISCAL SOLAR
251 series
ITEM #251003A   Air separator for solar heating systems with with threaded connections,
size 3/4” NPT Female
Description:
For solar heating systems.
Brass body.  Chrome plated
Working temp range:  -20° - 320°F
Max working pressure:  150 psi
Max discharge pressure:  150 psi
Connections:
- Main, ¾" NPT female
- Drain, ½" NPT female
General
The removal of dissolved gases from a solar primary circuit is an essential process in a solar
heating system. The presence of dissolved oxygen in a solar circuit causes rapid localized
corrosion in collectors and heat exchangers. Carbon dioxide will dissolve in water, resulting in
low pH levels and the production of corrosive carbonic acid. Low pH levels in a solar circuit
causes severe acid attack throughout the solar heating system. While dissolved gases and low pH
levels in the solar circuit can be controlled by the addition of chemicals, it is more economical
and thermally efficient to remove these gases mechanically. This mechanical process is known as air
separation and will increase the life of a solar heating system dramatically.
Function
Air separators are used to continuously eliminate air from the primary circuits of solar heating
systems. The air vent capacity of these devices is extremely high. They are able to automatically
remove all the air from the solar circuits, including microbubbles. The circulation of fully
separated fluid allows the system to work under optimal conditions without any trouble with noise,
corrosion, local overheating and mechanical damage.
This particular series of air separaots has been specifically designed to work at high temperature
with a glycol medium, which is typical of solar heating systems.