| Compatibility & Interchange: |
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| Construction: |
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| Safety Notes: |
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| Additional Information: |
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| Dual-Lock P-Series | Coupler (Female Threads) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Wrench Flats | Max. Operating Pressure | Burst Pressure |
| 4PF4 | Socket/Female | 1/2″ | 1/2″ – 14 Female NPTF | Steel | 2.75″ (69.9mm) |
1.55″ (39.4mm) |
1-1/4″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| 4PF6 | Socket/Female | 1/2″ | 3/4″ – 14 Female NPTF | Steel | 2.75″ (69.9mm) |
1.55″ (39.4mm) |
1-1/4″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| 4PF6-B | Socket/Female | 1/2″ | 3/4″ – 14 Female NPTF | Brass | 2.75″ (69.9mm) |
1.55″ (39.4mm) |
1-1/4″ | 300 PSI (20 bar) |
3500 PSI (240 bar) |
| 4PF6-S | Socket/Female | 1/2″ | 3/4″ – 14 Female NPTF | 303 Stainless | 2.75″ (69.9mm) |
1.55″ (39.4mm) |
1-1/4″ | 300 PSI (20 bar) |
4500 PSI (310 bar) |
| Dual-Lock P-Series | Plug (Female Threads) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Wrench Flats | Max. Operating Pressure | Burst Pressure |
| P4F3 | Plug/Male | 1/2″ | 3/8″ – 18 Female NPTF | Steel | 1.79″ (45.5mm) |
1.55″ (39.4mm) |
7/8″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| P4F4 | Plug/Male | 1/2″ | 1/2″ – 14 Female NPTF | Steel | 2.25″ (57.2mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| P4F4-B | Plug/Male | 1/2″ | 1/2″ – 14 Female NPTF | Brass | 2.25″ (57.2mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
3500 PSI (240 bar) |
| P4F6 | Plug/Male | 1/2″ | 3/4″ – 14 Female NPTF | Steel | 2.34″ (59.4mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| P4F6-9 | Plug/Male | 1/2″ | 3/4″ – 14 Female NPTF | Steel/PTFE Coating | 2.34″ (59.4mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| P4F6-B | Plug/Male | 1/2″ | 3/4″ – 14 Female NPTF | Brass | 2.34″ (59.4mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
3500 PSI (240 bar) |
| P4F6-S | Plug/Male | 1/2″ | 3/4″ – 14 Female NPTF | 303 Stainless | 2.34″ (59.4mm) |
1.55″ (39.4mm) |
1-5/16″ | 300 PSI (20 bar) |
4500 PSI (310 bar) |
| P4F8 | Plug/Male | 1/2″ | 1″ – 11-1/2 Female NPTF | Steel | 2.76″ (70.1mm) |
1.55″ (39.4mm) |
1-7/16″ | 300 PSI (20 bar) |
2600 PSI (180 bar) |
| P4F8-B | Plug/Male | 1/2″ | 1″ – 11-1/2 Female NPTF | Brass | 2.76″ (70.1mm) |
1.55″ (39.4mm) |
1-7/16″ | 300 PSI (20 bar) |
3500 PSI (240 bar) |






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