| Spare parts required for standard maintenance | Includes all spare parts marked with * | - |
| *Main diaphragm | 2 pieces | A |
| *Pilot diaphragm | 2 pieces | B |
| *Pilot valve assembly | Includes filter elements (DP27G and DP27GY use a pilot chamber assembly) | C |
| *Pilot valve filter element | 3 pieces each | E, F |
| Pilot valve filter element gasket | DP27G and DP27GY use PTFE seals (6 pieces/package) | E |
| Main valve assembly | - | K, L |
| *Integral strainer | - | M |
| Main valve return spring | - | N |
| Pressure-adjusting spring | Spring range for DP27, DP27E, and DP27G: 0.2-17 bar; spring range for DP27Y and DP27GY: 0.2-3 bar (not available for DP27R) | O, P |
| *Control pipe assembly | - | Q |
| *Balance pipe assembly | - | - |
| *Valve body gasket | 3 pieces (4 pieces/set) | R, S |
| Main valve return spring, pilot chamber fastening bolts and nuts, and main valve body fastening bolts and nuts | 4 pieces/set | T |
| Diaphragm chamber fastening bolts and nuts | ½”-DN32: 10 pieces/set; DN40 and DN50: 12 pieces/set | V |
| Pushrod and main diaphragm plate | - | Y |
