Bell & Gossett HS 793 Drain Valve - Manual

FIG. 1
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.
© 2013 Xylem Inc. I-793B June 2013 Part No. 512728
INSTRUCTION MANUAL
I-793
REVISION B
Hoffman Specialty ® No. 793 Drain Valve
Capacity: Discharge Orifice
for operating pressures up to 150 psig, 3/32" seat
for operating pressures over 150 psig, 5/64" seat
FIG. 1. INSTALLATION FOR SMALL AMOUNT OF WATER. 3/4 MIN.
PIPE SIZE & SHORT AS POSSIBLE WITH GATE VALVE.
FIG. 2. INSTALLATION WITH VENT LINE TO DOWN STREAM SIDE
OF AIR SEPARATOR & SIDE INLET TO DRAIN VALVE FOR FAST
FLOW OF WATER TO DRAIN VALVE.
FIG. 3. INSTALLATION NEAR COMPRESSED AIR TANK WITH VENT
LINE & SIDE INLET. LOCATION OF DRAIN VALVE MAY BE
VARIED VERTICALLY IN RELATION TO TANK FOR LONG
DISCHARGE, INFREQUENT OPERATION OR IF WATER IN
TANK IS OBJECTIONABLE LOWER DRAIN VALVE BELOW
TANK AS SHOWN.
CAPACITY
Pressure
(PSIG)
15
30
50
80
100
125
150
200
250
3/32 Orifice
375
530
690
870
975
1100
1200
5/64 Orifice
220
315
400
510
570
630
690
800
900
Capacity (Lbs. of Water per Hour)