AIR-OPERATED POSITIVE DISPLACEMENT VACUUM PUMP
REDUCES AIR CONSUMPTION TO ESSENTIALLY “ZERO”
FOR STATIC VACUUM APPLICATIONS:
• Consumes air only during initial draw-down.
• Consumes no air upon reaching and holding
the set level of vacuum.
• Maintains set vacuum even if there is small leakage, consuming a minimal amount of air.
ADJUSTABLE VACUUM STALL POINT FROM 2
TO 29 IN. HG:
• Built-in air regulator that is set to the desired vacuum.
When the set level is reached, the pump reaches equilibrium and stalls.
• The relationship of air drive pressure (psig) to vacuum
(in. hg) is 0.4:1 (73 psi yields 29 in.).
OTHER FEATURES:
• No inlet air valve, air regulator or air lubricator are
required.
• Polymeric dynamic seals and bearings are standard
for high efficiency and long life.
• Horizontal (floor) mount or vertical (wall mount).
• Compact and lightweight (13#) for portable uses.
CASE STUDY:
A high speed assembly machine uses twin “venturi” vacuum generators and 12 vacuum cups to pickand-place 12 small items at a rate of 25 cpm, 24 hours per day, 6 days a week, 50 weeks a year. The
duty (on/off) cycle of the generators is 50%. At an electrical cost of 10 cents per KWH, the calculated
cost of the compressed air is in excess of $900 per year. A test run with the “VAC-PAC” installed
showed an air cost of approximatly $50 per year.
AIR IN PORT
3/8 NPT
5.62
11.80
11.30
.25
AIR IN
.38
5.88
4.00 3.25
.28ø THRU
(TYP-4)
10.30
AIR REGULATOR
(SETS OUTPUT VACUUM STALL)
AIR GAUGE
VACUUM GAUGE
VACUUM PORT
3/8 NPT
4.00
30
30
25
25
25
20
20
20
15
10
5
VACUUM (in. hg)
30
VACUUM (in. hg)
VACUUM (in. hg)
PERFORMANCE (At 75 psig regulated drive pressure):
15
10
0
0
0
1
2
3
4
5
6
7
AIR CONSUMPTION — SCFM
Represented by:
8
9
10
10
5
5
0
15
0
1
2
3
4
VACUUM FLOW — SCFM
0
10
20
30
40
50
60
70
80
TIME TO EVACUATE 1 STD CU FT — SEC.
90
100
Interface Devices, Inc.
230 Depot Road • Milford, CT 06460
Tel: 203-878-4648 • Fax: 203-882-0885
Toll Free: 1-800-539-0193
www.interfacedevices.com
email: info@interfacedevices.com