Brochure

2
16
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.
Automatic air vent.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 32 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 250°F.
5020
MINICAL
™
Automatic air vent with service check valve
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 32 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 230°F.
5021
MINICAL
™
High discharge automatic air vent.
Hygroscopic safety air vent cap.
Max. working pressure: 150 psi.
Max. discharge pressure: 60 psi.
Max. discharge rate: 2.5 SCFM.
Max. working temperature: 250°F.
High discharge vent with service check.
Hygroscopic safety air vent cap.
Max. working pressure: 150 psi.
Max. discharge pressure: 60 psi.
Max. discharge rate: 2.5 SCFM.
Max. working temperature: 230°F.
Automatic air vent.
Brass body.
Hygroscopic safety air vent cap.
Max. working pressure: 150 psi.
Max discharge pressure: 32 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 250°F.
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 heat 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 oat 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
TM
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 lter,
valve stem, oat, and spring are all
made of stainless steel to prevent the
formation of rust.
Some MINICAL
TM
and VALCAL
TM
models are equipped
with a hygroscopic safety cap. Cellulose ber discs in the
cap serve as a redundant seal. Their volume increases by
50% when wet, sealing the discharge vent.
Some MINICAL
TM
and VALCAL
TM
models are equipped
with a service check valve which facilitates maintenance
operations by shutting off the water ow when the air vent
is removed and also allows an easyreplacement of the air
vent without purging the system.
MINICAL
TM
and VALCAL
TM
These oat 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
TM
is a standard size air vent that will
discharge up to 1.75 SCFM.
VALCAL
TM
is a high capacity larger size air vent
that will discharge up to 2.5 SCFM.
5022
VALCAL
™
5023
VALCAL
™
Code Description Lbs USD
502015A
1
/
8
" MNPT 0.4 14.60
502040A ½" MNPT 0.4 14.60
Code Description Lbs USD
502115A
1
/
8
" MNPT 0.4 19.60
502113A
1
/
8
" MNPT, hygroscopic anti-drip cap 0.4 22.60
Code Description Lbs USD
502043A ½" MNPT 0.6 20.60
Code Description Lbs USD
502243A ½" MNPT 0.5 35.30
Code Description Lbs USD
502343A ½" MNPT 0.5 41.70
Code Description Lbs USD
501502A ¾" FNPT 7 260.00