| Haight Pump United States |
| HANDOL PUMPS LIMITED Korea, Republic of |
| HARVARD APPARATUS United States |
| Haskel International, Inc. United States |
| Hayward Tyler Ltd United Kingdom |
| Hayward Tyler Ltd United Kingdom |
| Heinrichs & Co. KG Germany |
| HERMETIC-Pumpen GmbH Germany |
| Heypac Ltd United Kingdom |
| HMA PUMPS PVT LTD Pakistan |
| HMD Kontro Sealless Pumps United Kingdom |
| HOMA Pumpenfabrik GmbH Germany |
| HPP SRL Italy |
| Hung Pump Group Taiwan, Province of China |
| Hung Pump Industrial CO LTD Taiwan, Province of China |