| Air |
| Bell & Gossett | http://www.bellgossett.com |
| Air |
| Bryan Steam LLC | http://www.bryanboilers.com |
| Air |
| Eaton Filtration | http://www.filtration.eaton.com |
| Air |
| ITT | http://www.ittfluidbusiness.com/ |
| Air |
| Spirotherm Inc. | http://www.spirotherm.com |
| Air |
| Thrush Co. Inc. | http://www.thrushco.com |
| Blowdown |
| Bryan Steam LLC | http://www.bryanboilers.com |
| Blowdown |
| Penn Separator Corp. | http://www.pennseparator.com |
| Blowdown |
| Weben-Jarco, Inc. | http://www.weben-jarco.com |
| Blowdown |
| Williams & Davis Boilers | http://www.w-dboilers.com |
| Grease Traps | Plastic | Drain-Net | http://www.drain-net.com |
| Oil |
| Jay R. Smith Mfg. Co. | http://www.jrsmith.com |
| Oil |
| Keller Products | http://www.kellerproducts.com |
| Oil |
| Redi Controls Inc. | http://www.redicontrols.com |
| Oil |
| Westermeyer Industries Inc. | http://www.westermeyerind.com |
| Oil |
| Xerxes Corp. | http://www.xerxescorp.com |
| Solid |
| Highland Tank | http://www.highlandtank.com |
| Solid |
| Jay R. Smith Mfg. Co. | http://www.jrsmith.com |
| Solid |
| MIFAB | http://www.mifab.com |
| Solid |
| Rockford Separators Inc. | http://www.rkfdseparators.com |
| Solid |
| Zurn Plumbing Products Group | http://www.zurn.com |
| Steam |
| Bryan Steam LLC | http://www.bryanboilers.com |
| Steam |
| Eaton Filtration | http://www.filtration.eaton.com |
| Steam |
| Kadant Johnson | http://www.kadantjohnson.com |
| Steam |
| Penn Separator Corp. | http://www.pennseparator.com |
| Steam |
| TLV Corp. | http://www.tlv.com |
|
| Bell & Gossett | http://www.bellgossett.com |
|
| Highland Tank | http://www.highlandtank.com |
|
| Highland Tank | http://www.highlandtank.com |
|
| Jay R. Smith Mfg. Co. | http://www.jrsmith.com |
|
| Jay R. Smith Mfg. Co. | http://www.jrsmith.com |
|
| MIFAB | http://www.mifab.com |
|
| MIFAB | http://www.mifab.com |
|
| RGF Environmental Group | http://www.rfg.com |
|
| Rockford Separators Inc. | http://www.rkfdseparators.com |
|
| Rockford Separators Inc. | http://www.rkfdseparators.com |
|
| Spirotherm, Inc. | http://www.spirotherm.com |
|
| Taco, Inc. | http://www.taco-hvac.com |
|
| Watts Regulator Co. | http://www.watts.com |
|
| Western Water Products | http://www.westwaterpro.com |
|
| Zurn Plumbing Products Group | http://www.zurn.com |