Bell & Gossett HS 115B Model 508 Hygroscopic Air Vent - Manual (Page 2)

Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. HS-115B November 2012 Part No. 510901
OPERATION
Manual Discharge Position:
Unscrew the knob counterclockwise one turn. This
position is used mainly when filling the unit/system.
Automatic Discharge Position:
Turn the knob clockwise until it seats completely.
Valve will vent air automatically.
Replacement Cartridge:
Remove cartridge by unscrewing knob counter-
clockwise. The small ball inside the body prevents
water from escaping.