Here are some items that may be helpful to the folks that want to build their own vacuum stabilizing chamber.  I am always happy to help and advice is free so give me a call if you need some assistance!

Parts to Build Your Own Chamber

UL2750

Universal Lid

$25.95
gauge2

2.5'' Vacuum Gauge

$12.95
breaker750

Basic Vacuum Breaker System

$16.95
valve750

1/4'' Brass Ball Valve

$7.95
barb750

1/4'' MIP x 3/16'' Hose Barb

$2.95
hose

3/16'' ID Clear PVC Hose

$0.45
Complete750

Complete Chamber Plumbing Kit

$28.95
vacvonnect750

Vacuum Pump Adapter

$5.95
QC750

Vacuum Quick Connect

$8.95
pipe7501

4'' Clear PVC Pipe

$33.00
Starting price