| 01 | Pressure relief valve | DB |
| 02 | With attached directional valve | W |
| 03 | Pilot-operated valve (complete) | no code |
| Pilot control valve without main spool insert (do not enter any size) | C |
| Pilot control valve with main spool insert (enter size 10 or 30) | C |
| Pilot control valve without main spool insert for subplate mounting (do not enter any size) | T 1) |
| 04 | Size 10 |
| Subplate mounting "no code" | 10 |
| Threaded connection "G" | 10 (G1/2) |
| Size 16 |
| Threaded connection "G" | 15 (G3/4) |
| Size 25 |
| Subplate mounting "no code" | 20 |
| Threaded connection "G" | 20 (G1) |
| Threaded connection "G" | 25 (G1 1/4) |
| Size 32 |
| Subplate mounting "no code" | 30 |
| Threaded connection "G" | 30 (G1 1/2) |
| 05 | Normally closed | A |
| Normally open | B |
| Type of connection |
| 06 | Subplate mounting or cartridge valve | no code |
| For threaded connection | G |
| Adjustment type for pressure adjustment |
| 07 | Rotary knob (not for version "C" and "T") | 1 |
| Sleeve with hexagon and protective cap | 2 |
| Lockable rotary knob with scale | 3 2) |
| Rotary knob with scale | 7 |
| 08 | Main spool Ø24 mm (all sizes) | – |
| Main spool Ø28 mm (only for NG32) | N |
| 09 | Component series 50 … 59 (50 … 59: unchanged installation and
connection dimensions) | 5X |
| 10 | Set pressure up to 50 bar | 50 |
| Set pressure up to 100 bar | 100 |
| Set pressure up to 200 bar | 200 |
| Set pressure up to 315 bar | 315 |
| Set pressure up to 350 bar | 350 |
| Pilot oil flow |
| 11 | External pilot oil supply, internal pilot oil return | X 3) |
| Internal pilot oil supply, external pilot oil return | Y |
| Pilot oil supply and pilot oil return external | XY 3) |
| 12 | Standard version | no code |
| Valve for minimum cracking pressure (not for versions "without main
spool insert" and not suitable for mutual relief) | U 4) |
| 13 | Without switching shock damping | no code |
| With switching shock damping | S |
| 14 | With directional spool valve (data sheet 23178) | 6E |
| With directional seat valve (data sheet 22058) | 6SM |
| 15 | Direct voltage 24 V | G24 |
| Alternating voltage 230 V, 50/60 Hz | W230 |
| 16 | Without manual override | no code |
| With concealed manual override | N9 |
| With manual override | N |
| Electrical connection |
| 17 | Connector DIN EN 175301-803 | K4 5) |
| 18 | Nozzle Ø1,2 mm in channel B of the directional spool valve (version
"6E") | R12 6) |
| Nozzle Ø1,2 mm in channel P of the directional seat valve (version
"6SM") | B12 6) |
| Corrosion resistance |
| 19 | None | no code |
| Seal material |
| 20 | NBR seals | no code |
| FKM seals | V |
| Observe compatibility of seals with hydraulic fluid used. (Other
seals upon request) |
| Equipment Directive |
| 21 | Without type-examination procedure | no code |
| Type-examination tested safety valve according to Pressure
Equipment Directive 2014/68/EU | E |
| 22 | Further details in the plain text | * |
