| ABPA |
American Backflow Prevention Association |
| AFSA |
American Fire Sprinkler Association |
| AIBD |
American Institute of Building Design |
| ArabFedEng |
Federation of Arab Engineers |
| ASA |
American Supply Association |
| ASCE |
American Society of Civil Engineers |
| ASHRAE |
American Society of Heating, Refrigeration and Air Conditioning Engineers |
| ASPE |
American Society of Plumbing Engineers |
| ASSE |
American Society of Sanitary Engineering |
| ASTM |
American Society for Testing and Materials |
| Autodesk |
Autodesk |
| AWWA |
American Water Works Association |
| Carrier |
Carrier |
| CSI |
Construction Specification Institute |
| DBIA |
Design, Build Institute of America |
| EEA |
Egyptian Engineers Syndicate |
| EPA |
Environmental Protection Agency Cross Connection Control Manual |
| ESE |
Egyptian Society of Mechanical Engineers |
| IA |
Irrigation Association |
| IAPMO |
International Association of Plumbing & Mechanical Officials |
| MCAA |
Mechanical Contractors Association of America |
| MHI |
Manufactured Housing Association |
| NAPHCC |
National Association of Plumbing - Heating - Cooling Contractors |
| NFPA |
National Fire Protection Assoc. |
| NFSA |
National Fire Sprinkler Association |
| NRWA |
National Rural Water Association |
| PDI |
Plumbing and Drainage Institute |
| PMI |
Plumbing Manufacturers Institute |
| RPA |
Radiant Panel Association |
| SMACNA |
Sheet Metal and Air Conditioning Contractors’ National Association |
| Trane |
Trane |
| WPC |
World Plumbing Council |
| York |
York |
