Product Overview

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Automatic air vent.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 90 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 240°F.
Automatic air vent with service check valve.
Brass body.
Max. working pressure: 150 psi.
Max. discharge pressure: 90 psi.
Max. discharge rate: 1.75 SCFM.
Max. working temperature: 240°F.
5026
5027
tech. broch. 01090
tech. broch. 01090
Code Description Lbs USD
502610A
1
/
8
" NPT male 0.6 20.30
502620A ¼" NPT male 0.6 21.20
502640 ½" straight thread 1.0 30.50
Code Description Lbs USD
502710A
1
/
8
" NPT male 0.6 28.10
502720A ¼" NPT male 0.6 29.70
Manual air vent with metal seal and
adjustable outlet.
Brass body.
Max. working pressure: 150 psi.
Max. working temperature: 212°F.
337
Code Description Lbs USD
337221A ¼" NPT male 0.1 13.70
Service check valve for removal of air vent
or expansion tank without purging system.
Fits automatic air vents 502 series.
Max. working pressure: 150 psi.
Max. working temperature: 250°F.
Code Description Lbs USD
59474A
1
/
8
" NPT male 0.1 15.80
59804A ¼" NPT male 0.1 16.90
561402A ½" NPT male 0.2 19.50
Automatic hygroscopic air vent for hydronic
heating system and low pressure steam.
Manual operation by rotating knob.
Chrome plated brass body.
Max. working pressure: 150 psi.
Max. working temperature: 212°F.
Low pressure steam: 15 psi.
(Priced each, sold in package of 25 each)
5080
tech. broch. 01090
Code Description Lbs USD
508013A
1
/
8
" NPT male 0.5 11.10
Replacement hygroscopic cartridge
fits hygroscopic air vent 5080 series.
(Priced each, sold in package of 25 each)
5081
tech. broch. 01090
Code Description Lbs USD
508100A Cartridge 0.4 9.60
AUTOMATIC AND MANUAL AIR VENTS
High discharge automatic air vent.
Brass body.
Stainless steel float guide pin and linkage.
Max. working pressure: 150 psi.
Max. discharge pressure: 90 psi.
Max. discharge rate: 4.5 SCFM.
Max. working temperature: 250°F.
551
DISCAL
Code Description Lbs USD
551004A ½" NPT female 0.8 124.60
®
Automatic radiator air vent valve is designed to remove any
air trapped inside the heat emitters both during the filling
of the system and in normal operation. The automatic air
discharge happens when the hygroscopic cellulose fibre
discs are dry. As air is vented and water contacts the
hygroscopic discs, they increase their volume by 50%
which cause the discharge vent to close.
tech. broch. 01124