HNR-PK Meet ISO 5675 Standard
APPLICATION
● The PK series is widely used in various industrial
● applications, including construction equipment, forestry machinery, agricultural machinery, hydraulic tools, steel equipment, and other hydraulic systems.
● applications, including construction equipment, forestry machinery, agricultural machinery, hydraulic tools, steel equipment, and other hydraulic systems.
FEATURES
● When the coupling is clamped or installed in a bulkhead configuration, the double-acting sleeve allows single handed operation.
● The valve core automatically closes when the coupling is disconnected, preventing leakage.
● Once connected, the valve automatically opens, ensuring smooth fluid flow within the rated operating range.
● Key components are induction-hardened for enhanced durability.
● A reliable ball-lock mechanism securely joins the two matching halves.
● The female socket and male plug are precision engineered from solid bar stock. This coupling complies with ISO 5675 standards.
● It is interchangeable with the following products: Parker (USA) 4250 series and Faster (Italy) CPV-CNV series.
PERFORMANCE
Test Fluid：Oil-200SUS
Product tested: S4 series
1GPM ＝ 3.78L/Min
1PSID ＝ 0.0069Mpa
FLOW DATA
|
（in.） Body >Size |
(PSI) Rated Pressure |
（GMP） Rated Flow |
|
1/4 |
5000 |
3 |
|
3/8 |
4000 |
6 |
|
1/2 |
4000 |
12 |
|
3/4 |
3000 |
28 |
|
1 |
3000 |
50 |
SEAL ELASTOMER DATA
| Seal Elastomer | Max. Operation Temperature Range |
| Nitrile (NBR) | -20℃ to +120℃ |
| EPDM | -54° C to +149° C/-65° C to +300° F |
| FKM | -29° C to +204° C/-15° F to +400° F |
Socket
| ISO | PART NO. | LS | D | 1 | A | T | |
| 6.3 | HNR-PK-02SF | 55.5 | 27.6 | 22.2 | 12.5 | G1/4 NPT1/4 | |
| 10 | HNR-PK-03SF | 60.5 | 34 | 24 | 13 | G3/8 NPT3/8 | |
| 12.5 | HNR-PK-04SF | 68 | 38 | 27 | 16 | G1/2 NPT1/2 | |
| 20 | HNR-PK-06SF | 83 | 47.5 | 35 | 18 | G3/4 NPT3/4 | |
| 20 | HNR-PK-06SF(E) | 82.5 | 48.2 | 34 | 19 | G3/4 NPT3/4 | |
| 25 | HNR-PK-08SF | 97.5 | 56.2 | 41 | 21 | G1 NPT1 | |
Plug
| ISO | PART NO. | LP | D | C | 2 | A | T |
| 6.3 | HNR-PK-02PF | 36 | 14.2 | 18.5 | 19 | 12.5 | G1/4 NPT1/4 |
| 10 | HNR-PK-03PF | 40 | 19 | 22 | 24 | 13 | G3/8 NPT3/8 |
| 12.5 | HNR-PK-04PF | 46 | 20.5 | 27 | 27 | 18 | G1/2 NPT1/2 |
| 20 | HNR-PK-06PF | 51 | 26.9 | 33.3 | 33.3 | 18 | G3/4 NPT3/4 |
| 20 | HNR-PK-06SP(E) | 53.5 | 28 | 34 | 34 | 19 | G3/4 NPT3/4 |
| 25 | HNR-PK-08PF | 64 | 31.3 | 41 | 41 | 21 | G1 NPT1 |
Coupling Fitting
| ISO | PART NO. | L | D | 1 | 2 | T | |
| 6.3 | HNR-PK-02 | 72.2 | 27.6 | 22.2 | 19 | G1/4 NPT1/4 | |
| 10 | HNR-PK-03 | 80.2 | 34 | 24 | 24 | G3/8 NPT3/8 | |
| 12.5 | HNR-PK-04 | 92.3 | 38 | 27 | 27 | G1/2 NPT1/2 | |
| 20 | HNR-PK-06 | 102.2 | 47.5 | 35 | 33.3 | G3/4 NPT3/4 | |
| 20 | HNR-PK-06(E) | 107.8 | 48.2 | 34 | 34 | G3/4 NPT3/4 | |
| 25 | HNR-PK-08 | 128.8 | 56.2 | 41 | 41 | G1 NPT1 | |
Accessories
| Size | Dust Cap（Male） | Dust Cap（Female） |
| 1/4 | PK PDC-1/4M | PK PDC-1/4F |
| 3/8 | PK PDC-3/8M | PK PDC-3/8F |
| 1/2 | PK PDC-1/2M | PK PDC-1/2F |
| 3/4 | PK PDC-3/4M | PK PDC-3/4F |
| 1 | PK PDC-1M | PK PDC-1F |