Bell & Gossett HS 100D Steam Vents for Radiators 1B Air Valve - Manual

Maximum operating pressure 1
1
⁄
2
psig.
Maximum pressure 10 psig.
1A
1/8" NPT
Connection 1B
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.
Xylem, Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/hoffmanspecialty
© 2012 Xylem Inc. P81630E February 2012
Hoffman Specialty ®
Steam Vents for Radiators
Model 1A and 1B
Air Valve (non vacuum)
INSTRUCTION MANUAL
HS-100
REVISION D