| 01 | up to 280 bar | no code |
| Up to 350 bar | H- |
| Main ports |
| 02 | 3-way version | 3 |
| 4-way version | 4 |
| Type of actuation |
| 03 | Hydraulic | WH |
| Electro-hydraulic | WEH |
| Size |
| 04 | NG10 | 10 |
| NG16 | 16 |
| NG25 (version "W.H 22") | 22 |
| NG25 (version "W.H 25") | 25 |
| Size 32 | 32 |
| Spool return in the main valve |
| 05 | By means of springs | no code |
Hydraulic 1) | H |
| 06 | Symbols; for the possible version, see "Symbols/Circuit diagrams" | |
| Component series |
| 07 | Component series 40 … 49 (40 … 49: unchanged installation and
connection dimension) – NG10 | 4X |
| Component series 60 … 69 (60 … 69: unchanged installation and
connection dimension) – NG25 ("W.H 25") and NG32 | 6X |
| Component series 70 … 79 (70 … 79: unchanged installation and
connection dimension) – NG16 (from series 72) andNG25 ("W.H 22") | 7X |
| Control spool return in the pilot control valve with 2 spool
positions and 2 solenoids (only possible with symbols C, D, K, Z
and hydraulic control spool return in the main valve) |
| 08 | With spring return | no code |
| Without spring return | O |
Without spring return with detent 2) | OF |
Pilot control valve 2) |
| 09 | High-power valve (data sheet 23178) | 6E |
Electrical voltages 2) |
| 10 | Direct voltage 24 V | G24 |
| Alternating voltage 230 V, 50/60 Hz | W230 |
| Manual override |
| 11 | Without manual override | no code |
| With manual override | N |
| With concealed manual override | N9 |
Pilot oil flow 3) |
| 12 | External pilot oil supply, external pilot oil return 4) | no code |
Internal pilot oil supply, external pilot oil return 4; 5) | E |
Pilot oil supply internal, pilot oil return internal 5) | ET |
External pilot oil supply, internal pilot oil return 4) | T |
| Switching time adjustment |
| 13 | Without switching time adjustment | no code |
| Switching time adjustment as supply control | S |
| Switching time adjustment as discharge control | S2 |
| Corrosion resistance (outside) |
| 14 | None (valve housing primed) | no code |
| Improved corrosion protection (240 h salt spray test according to
EN ISO 9227) | J3 |
Electrical connection 2) |
| 15 | Individual connection |
| Without mating connector, connector according to DIN EN 175301-803 | K4 6) |
| Spool position monitoring |
| 16 | Without position switch | no code |
| Monitored spool position "a" | QMAG24 |
| Monitored spool position "b" | QMBG24 |
| Monitored spool position "a" and "b" | QMABG24 |
| Monitored rest position | QM0G24 |
| Stroke setting |
| 17 | Stroke setting on valve side A and B | 10 |
| Stroke setting on valve side A | 11 |
| Stroke setting on valve side B | 12 |
Throttle insert 2) |
| 18 | Without throttle insert | no code |
| Throttle Ø 0.8 mm | B08 |
| Throttle Ø 1.0 mm | B10 |
| Throttle Ø 1.2 mm | B12 |
| Throttle Ø 1.5 mm | B15 |
| Throttle Ø 2.0 mm | B20 |
| Throttle Ø 2.5 mm | B25 |
preload valve (not for NG10) 2) |
| 19 | Without pre-decompression | no code |
| With preload valve | P4,5 |
| 20 | Without pressure reducing valve | no code |
| With pressure reducing valve | D3 7) |
| Seal material (observe compatibility of seals with hydraulic fluid
used, see "Technical data") |
| 21 | NBR seals | no code |
| FKM seals | V |
| 22 | Further details in the plain text | * |
