Product Overview

2
10
Automatic air vent for heating and air
conditioning. Brass body and cover,
stainless steel internal components.
Extra high discharge capacity.
Max. working pressure: 230 psi.
Max. discharge pressure: 90 psi.
Max. discharge rate: 9 SCFM.
Working temperature range: -4 – 250°F.
Discharge top thread:
3
/
8
" female.
tech. broch. 01090
Code Description Lbs USD
501502A ¾" NPT female 7 404.30
Automatic air vent.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 40 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 250°F.
5020
MINICAL
®
tech. broch. 01054
Code Description Lbs USD
502015A
1
/
8
" NPT male 0.4 22.60
Automatic air vent with service check valve
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 40 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 230°F.
5021
MINICAL
®
tech. broch. 01054
Code Description Lbs USD
502115A
1
/
8
" NPT male 0.4 30.50
High discharge automatic air vent.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 60 psi.
Max. discharge rate: 2.5 SCFM.
Max. working temperature: 250°F.
tech. broch. 01090
Code Description Lbs USD
502243A ½" NPT male 0.5 54.80
High discharge vent with service check.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 60 psi.
Max. discharge rate: 2.5 SCFM.
Max. working temperature: 250°F.
tech. broch. 01090
Code Description Lbs USD
502343A ½" NPT male 0.5 64.70
Automatic air vents.
Brass body.
Hygroscopic safety air vent cap.
Max. working pressure: 150 psi.
Max discharge pressure: 60 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 250°F.
tech. broch. 01054
Code Description Lbs USD
502043A ½" NPT male 0.6 31.90
5020
MINICAL
®
AUTOMATIC AND MANUAL AIR VENTS
Automatic air vents are designed to remove the air that accumulates in
heating and cooling systems without the need for manual intervention. This
prevents harmful air that may compromise the life and the performance of
the system which includes:
- corrosion due to the oxygen;
- pockets of air trapped in the heating emitters;
- cavitation in the circulation pumps;
- noise from air passing through the pipes.
The accumulation of air bubbles in the air vent body causes the float to drop
and thus the vent valve to open. The air vent functions correctly, as long as
the water pressure remains below the maximum discharge pressure.
501
MAXCAL
®
MAXCAL
®
Extra high capacity air vent is ideal
for use in large piping systems and
can also be installed in horizontal
piping. The valve body and cover are
made of forged brass while the filter,
valve stem, float and spring are all
made of stainless steel to prevent the
formation of rust.
Some MINICAL
®
and VALCAL
®
models are equipped with
a hygroscopic safety cap. Cellulose fibre discs serve as
the redundant vent seal which their volume increases by
50% when they become wet which cause the discharge
vent to close.
Some MINICAL
®
and VALCAL
®
models are equipped
with a service check valve which facilitates maintenance
operations by shutting off the water flow when the air vent
is removed and also allows an easy replacement of air vent
without purging the system.
MINICAL
®
and VALCAL
®
These float type automatic air vents are
designed to vent released air from the water
while being heated. They are used on manifolds
or pipes in sealed heating systems.
MINICAL
®
is a standard size air vent that will
discharge up to 1.75 SCFM.
VALCAL
®
is a high capacity larger size air vent
that will discharge up to 2.5 SCFM.
5022
VALCAL
®
5023
VALCAL
®