- Cam Spray
- Easy-Kleen Pressure Systems Ltd.
- Garnet Instruments
- HotJet USA
- Imperial Industries, Inc.
- KeeVac Industries
- Marsh Industrial
- Milwaukee Rubber Products, Inc.
- National Vacuum Equipment
- Pik Rite, Inc.
- Pressure Lift Corporation
- Presvac Systems
- R.A. Ross NE
- Robinson Vacuum Tanks Inc.
- Satellite Industries
- Superior Signal Company LLC
- Tank World Corp
- TankTec
- The Shaddix Company, Inc.
- Transway Systems Inc.
- TSI Tank Services, Inc.
- TUF-TITE, Inc.
- Vactor Manufacturing
- Vacuum Sales, Inc.
- VARCo
- Westmoor Ltd.
