Bell & Gossett HS 793 User Manual

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

CAPACITY

Pressure

(PSIG)

15

30

50

80

100

125

150

200

250

Capacity (Lbs. of Water per Hour)

3/32 Orice

375

530

690

870

975

1100

1200

5/64 Orice

220

315

400

510

570

630

690

800

900

FIG. 1

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.

Xylem Inc.

8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: [phone]
Fax: [phone]
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