Vacuum Pumps and Vacuum Generators
Single-Stage “Safety” Vacuum Pumps with Dual Inlet Ports
JBS Series

JBS Series Safety Vacuum Generators with Dual Inlet Ports

Note: JBS shown with optional vacuum gauge

The JBS Series vacuum generating system provides dual inlet ports for air supply and blow-off. Once a vacuum is obtained, the check valves hold the vacuum until the system is opened by a compressed air signal to the blow-off port.

Use this system for hold-down applications. Check valves are only effective on non-porous applications in a leak-free system.

Available Options:

Specifications:

Compressed air: 50 micron, filtered, non-lubricated
Operating temp.: -10 to 80°C = 14 to 176°F
Optimum operating pressure: 5 bar = 72.5 psi

Dimensional Specifications:

Nozzle Size D
in.
(mm)		 L1
in.
(mm)		 L2
in.
(mm)		 Air Consumption
SCFM
(l/min.)		 Vacuum Flow
SCFM
(l/min.)		 Vacuum Level
in Hg
(-mmHg)
12 0.76
(19)		 3.22
(81.8)		 1.37
(35)		 2.10
(59)		 1.90
(54)		 27
(690)
15 0.76
(19)		 3.63
(92.2)		 1.37
(35)		 3.20
(91)		 2.65
(75)		 27
(690)
20 0.95
(24)		 4.65
(118.1)		 1.83
(47)		 6.10
(170)		 4.50
(130)		 27
(690)
25 0.95
(24)		 5.22
(132.6)		 1.83
(47)		 9.20
(260)		 7.06
(200)		 27
(690)
30 1.34
(34)		 6.37
(161.8)		 3.81
(97)		 14.0
(400)		 9.50
(270)		 27
(690)
JB
JB Series		 12
Nozzle Size
12
15
20
25
30		 H
Vacuum Level
H = 90% (Standard)		 S
Double Supply Ports and Check Valves		 V
Accessories
D = Digital Switch
L = Electronic Switch
M = Electro-Mechanical Switch
N = Pneumatic Switch