Product Overview

Automatic air vent for heating systems. 3/4" F threaded connection. Brass body and cover. VITON operating

mechanism seal. Stainless steel float components and cover bolts. Seat and seal protected by a thin-mesh filter.

EPDM seals. Maximum working pressure: 230 psi (16 bar). Maximum venting pressure: 90 psi (6 bar).

Maximum working temperature: 250°F (120°C). With 3/8" F discharge connection.

SPECIFICATION SUMMARIES

Series 501

Automatic air vent. 1/8" and 1/4” M threaded connections. Brass body and cover. Silicone rubber operating

mechanism. EPDM seals. Maximum working pressure: 150 psi (10 bar). Maximum venting pressure: 90 psi (6 bar).

Maximum working temperature: 240°F (115°C). Antirotation and antivibration system of the float. Vertical relief.

Series 5026

Automatic air vent. 1/2" M threaded connection. Brass body and cover. Brass valve stem. EPDM seals.

Maximum working pressure: 150 psi (10 bar). Maximum venting pressure: 60 psi (4 bar). Maximum working

temperature: 250°F (120°C). Vertical relief.

Series 5022

Automatic air vent with check valve. 1/2" M threaded connection. Brass body and cover. Brass valve stem.

EPDM seals. Maximum working pressure: 150 psi (10 bar). Maximum venting pressure: 60 psi (4 bar).

Maximum working temperature: 250°F (120°C). Vertical relief.

Series 5023

Automatic air vent with check valve. 1/8” and 1/4” M threaded connections. Brass body and cover. Silicone rubber

operating mechanim. EPDM seals. Maximum working pressure: 150 psi (10 bar). Maximum venting pressure: 90 psi

(6 bar). Maximum working temperature: 240°F (115°C). Antirotation and antivibration system of the float. Vertical

relief.

Series 5027

Automatic hygroscopic radiator air vent. 1/8" M threaded connection. Nickel-plated brass body. White POM

heat resistant knob. Maximum working pressure: 150 psi (10 bar). Maximum working temperature: 212°F

(100°C). Replaceable hygroscopic cartridge.

Series 5080

We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.

Caleffi North America, Inc.

Corporate Headquarters & Production

9850 South 54th Street / Milwaukee, WI 53132

Tel: 414.421.1000 / Fax: 414.421.2878 / www.caleffi.com

CALEFFI