| DIN3015-LB-K-4G-28-PP-W1 | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV |
| DIN3015-LB4G-28PP-W1-K | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV |
| HR4LB-28.0/1GLATT | C1861 | HYDAC SYSTEMS & SERVICES GMBH |
| HRGL4B28PP ST BL | C1861 | HYDAC SYSTEMS & SERVICES GMBH |
| HRGL4B28PP STMBL | C1861 | HYDAC SYSTEMS & SERVICES GMBH |
| H-SP428PP-IS | D2766 | STAUFFENBERG, WALTER GMBH & CO. KG |
| RAPE2-428-GLATT | C2898 | FKB GMBH |
| RAPG2-428 | C2898 | FKB GMBH |
| SP428PPH-IS | D2766 | STAUFFENBERG, WALTER GMBH & CO. KG |
| RAPG2-428 | D8134 | PARKER HANNIFIN GMBH-GESCHAEFTSBEREICH ERMETO- |
| RAPE2-428-GLATT | D8134 | PARKER HANNIFIN GMBH-GESCHAEFTSBEREICH ERMETO- |
| VG95932E4-28-PP-W1 | D9477 | BUNDESAMT FUER AUSRUESTUNG, |
| SP428PPH-IS | F7247 | STAUFF |