Regulate vacuum ????

Ok guys, how to lower or regulate vacuum? I was going to try a air compressor regulator but after thinking of it while driving, it shouldn’t work as they generally have a diaphram and the spring (turn screw adds pressure) controls the pressures…vacuum would suck off the diaphram.

Just use like a Binks shut off ball valve at the vacuum point that I need for overlays???

I’m setting up a killer (hope not a student) roll about vacuum pump with the pressure pot and a vacuum log with many couplers to be able to do several vacuum baggings at once or several can do them at seperate times or at different pressures…

http://www.mcmaster.com/

ABS-Case Vacuum and Compound Gauges—± 2% Mid-Scale Accuracy (Grade B)
• Case: Black ABS thermoplastic
• General service copper alloy Bourdon
pressure tube
• Connection: Brass
1 1/2" & 2" dial sizes: 1/8" NPT male
2 1/2" & 4" dial sizes: 1/4" NPT male
• Lens Material: Acrylic
• Temperature Range:
Ambient and Process: -40° to +140° F
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Bottom Connection
Compound Gauges
To Order: Please specify vacuum/pressure range from table below.

Available Pressure Ranges (Hg/psi)
Vacuum/ Figure Intervals Graduation Marks
Pressure Range 2 1/2" Dial 4" Dial 2 1/2" Dial 4" Dial
0 to -30"/0-15 10"/5 5"/3 1"/0.5 1"/0.5
0 to -30"/0-30 10"/10 10"/5 2"/1 1"/0.5
0 to -30"/0-60 30"/20 10"/10 2"/2 2"/2
0 to -30"/0-100 30"/20 30"/10 5"/2 5"/2
0 to -30"/0-160 30"/20 30"/20 10"/5 5"/5
0 to -30"/0-200 30"/50 30"/20 10"/5 5"/5
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Dial
Bottom Connection

Center Back Connection
Size Each Each
2 1/2"
3941K53 $8.92

3941K63 $9.46
4"
3941K74 11.21

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I hook this up on my pressure pot and cut vacuum source then regulate it down to the needed vacuum.

Dougie, I take it these are just vacuum gauges? I’ll try and land call you…