Install Instructions

Steam Vents for Radiators

Model 1A and 1B

Air Valve (non vacuum)

Maximum operating pressure 1

⁄2 psig.

Maximum pressure 10 psig.

1/8" NPT

Connection

1/4" NPT

Connection

MAINTENANCE

INSPECT ANNUALLY: This vent allows air to

escape from the radiator as the steam pushes in.

A cold upper part of the radiator may indicate the

vent is plugged with scale or is malfunctioning.

Vapor or slight moisture from the vent is normal.

Steam continuously passing through the vent

indicates a malfunction. Replace the vent as

needed or every 10 years.

Hoffman Specialty

Installation Instructions

HS-100(C)

ITT

8200 N. Austin Ave.

Morton Grove, IL 60053

tel: 847-966-3700

fax: 847-966-9052

www.hoffmanspecialty.com

Printed in U.S.A. 5-07 512500

Hoffman Specialty

PAGE 1
Hoffman Specialty MAINTENANCE INSPECT ANNUALLY: This vent allows air to escape from the radiator as the steam pushes in. A cold upper part of the radiator may indicate the vent is plugged with scale or is malfunctioning. Vapor or slight moisture from the vent is normal. Steam continuously passing through the vent indicates a malfunction. Replace the vent as needed or every 10 years. ITT 8200 N. Austin Ave. Morton Grove, IL 60053 tel: 847-966-3700 fax: 847-966-9052 www.hoffmanspecialty.
PAGE 2
Adjustable ports for proportional venting. Venting Speed Port No. Fast Medium Slow 5 or 6 3 or 4 1 or 2 Port Adjustment • Port 1 provides the slowest venting. • Port 6 provides the fastest venting. For Radiation located farthest from the boiler or areas that are hard to heat. Normal venting of radiation under normal conditions. Radiation located nearest the boiler or areas that overheat. Note: The air valve is factory set on port 6 for fast venting.