Brochure

93
Valves
Hoffman Specialty
®
Valves
4
1
/16"
(103mm)
1
/2" NPT
3
/4" NPT
7" (178mm)
1
/2" NPT
1
/4" NPT
Drain Valves
Model 793 Part No. 401500, 150 psig (10.3 bar)
Part No. 401503, 250 psig (17.3 bar)
Drain Valve
• Automatically removes water from compressed air
tanks, air separators and after-coolers
• Minimum air loss
•
1
⁄2" NPT outlet,
1
⁄2" NPT side inlet,
3
⁄4" NPT top inlet
• Cast iron body and cover, stainless steel interior
• Maximum pressure 250 psig (17.3 bar)
• Maximum hydrostatic pressure 350 psig (24.2 bar)
Drain Valve
Model 793
Model 793 Capacity
Pressure lbs. of water/hr. (kg of water/hr)
psig (bar)
3
⁄32" (2.4mm) Orifice
5
⁄64" (2mm) Orifice
250 (17.3)
—
900 (408)
200 (13.8)
—
800 (360)
150 (10.3) 1200 (545) 690 (315)
125 (8.6) 1100 (500) 630 (285)
100 (6.9) 975 (442) 570 (258)
80 (5.5) 870 (394) 510 (231)
50 (3.5) 690 (312) 400 (181)
30 (2.1) 530 (240) 315 (143)
15 (1.0) 375 (170) 220 (100)
CAPACITY:
Discharge Orifice
– for operating pressures up to 150 psig (10.3 bar),
3
⁄32
"
(2.4mm) seat
– for operating pressures over 150 psig (10.3 bar),
5
⁄64
"
(2mm) seat