series
Threaded Couplers
Thread-To-Connect Under Pressure Couplings Qktf Series
BSP FittingFitting style
thread-to-connect-under-pressure-couplings-qktf-seriesPart number
Details Availability
Hydronex / Threaded Couplers
SERIES
Threaded Couplers
Thread Locked Type Hydraulic Couplings(Steel) Qktl Series
The QKTL Series Thread Locked Type Hydraulic Couplings feature a tall, knurled barrel coupler body for maximum grip surface area combined with a compact hex-body nipple. These couplings are designed for high-cycle applications where ease of connection and disconnection is critical.
Material
Carbon Steel
Surface finish
Zinc Plated / Nickel Plated
Application
High-cycle industrial systems, maintenance equipment, test rigs
Threaded CouplersSERIES
Threaded Couplers
ThreadLockedTypeHydraulicCouplings(Steel)QktlSeries
The QKTL Series Thread Locked Type Hydraulic Couplings feature a tall, knurled barrel coupler body for maximum grip surface area combined with a compact hex-body nipple. These couplings are designed for high-cycle applications where ease of connection and disconnection is critical.
Material: Carbon Steel;
Surface Treat: Zinc Plated / Nickel Plated;
Application: High-cycle industrial systems, maintenance equipment, test rigs
Technical Data
Body Size (in)
Specifications
1/4", 3/8", 1/2", 3/4", 1"
Rated Pressure (Bar)
350, 300, 300, 250, 250
Key Features
Tall knurled barrel for superior hand grip
High-cycle rated for frequent connect/disconnect operations
Thread-locked safety retention mechanism
Carbon steel with zinc/nickel plating for corrosion protection
Compact nipple body for restricted space installations
Compatible with hydraulic oil and water-based fluids
Specifications
Standard
ISO 7241
Body Material
Carbon Steel
Seal Material
NBR
Surface Treatment
Zinc / Nickel Plated
Technical Specifications
- High grade carbon steel with heat treated wear parts
- NBR
- Backup ring in PTFE
- -25°C to +125°C (-13°F to +257°F)
- According to ISO 7241-2
Applications
Test bench and rig connections
High-cycle maintenance equipment
Hydraulic tool connections
Industrial automation systems
Test bench and rig connections
High-cycle maintenance equipment
Hydraulic tool connections
Industrial automation systems
Nipple Female Thread / Male
| Part No. | Thread Size | BSPP | Overall Length (mm) | Exposed Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread Size | BSPP | Overall Length (in.) | Exposed Length (in.) | Hex Size (in.) | Largest Diameter (in.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QKTL-02PF | G1/4 | 1/4" | 33 | 12 | 19 | 29 | QKTL-N02PF | NPT1/4 | 1/4" | 1.29 | 0.48 | 0.75 | 1.13 |
| QKTL-03PF | G3/8 | 3/8" | 40 | 13 | 24 | 32 | QKTL-N03PF | NPT3/8 | 3/8" | 1.58 | 0.5 | 0.94 | 1.25 |
| QKTL-04PF | G1/2 | 1/2" | 49 | 22 | 27 | 38 | QKTL-N04PF | NPT1/2 | 1/2" | 1.92 | 0.86 | 1.06 | 1.49 |
| QKTL-06PF | G3/4 | 3/4" | 70 | 40 | 50 | 56 | QKTL-N06PF | NPT3/4 | 3/4" | 2.75 | 1.57 | 1.96 | 2.2 |
Couplers Female Thread / Female
| Part No. | Thread | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread | Overall Length (in.) | Hex Size (in.) | Largest Diameter (in.) |
|---|---|---|---|---|---|---|---|---|---|
| QKTL-02SFM | G1/4 | 60 | 21 | 29 | QKTL-N02SFM | NPT1/4 | 2.38 | 0.81 | 1.13 |
| QKTL-03SFM | G3/8 | 73 | 25 | 35 | QKTL-N03SFM | NPT3/8 | 2.88 | 1 | 1.38 |
| QKTL-04SFM | G1/2 | 63 | 27 | 45 | QKTL-N04SFM | NPT1/2 | 2.48 | 1.06 | 1.77 |
| QKTL-06SFM | G3/4 | 82 | 38 | 42 | QKTL-N06SFM | NPT3/4 | 3.22 | 1.49 | 1.65 |
Coupler Female Thread
| Part No. | Thread Size | BSPP | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread Size | Overall Length (in.) | Hex Size (in.) | Largest Diameter (in.) |
|---|---|---|---|---|---|---|---|---|---|---|
| QKTL-02SFF | G1/4 | 1/4" | 60 | 21 | 29 | QKTL-N02SF | NPT1/4 | 2.38 | 0.81 | 1.13 |
| QKTL-03SFF | G3/8 | 3/8" | 73 | 25 | 35 | QKTL-N03SF | NPT3/8 | 2.88 | 1 | 1.38 |
| QKTL-04SFF | G1/2 | 1/2" | 63 | 27 | 45 | QKTL-N04SF | NPT1/2 | 2.48 | 1.06 | 1.77 |
| QKTL-06SFF | G3/4 | 3/4" | 82 | 38 | 42 | QKTL-N06SF | NPT3/4 | 3.22 | 1.49 | 1.65 |
Specification Details
| Body Size (in) | Rated Pressure (Bar) | Rated Flow (GPM) | Temperature Range (Std seals) |
|---|---|---|---|
| 1/4" | 750 | 3 | -20°C to +125°C |
| 3/8" | 750 | 6 | -20°C to +125°C |
| 1/2" | 600 | 8 | -20°C to +125°C |
| 3/4" | 600 | 10 | -20°C to +125°C |
Dust Protection
| Dust protections - 防尘帽 | Dust protections - 防尘帽 | ||||||
|---|---|---|---|---|---|---|---|
| PVC | Aluminum | PVC | Aluminum | ||||
| mm | inch | Part Number | Colour | Part Number | Part Number | Colour | Part Number |
| 6.3 | 1/4 | CTL-1/4 | PTL-1/4 | ||||
| 10 | 3/8 | CTL-3/8 | PTL-3/8 | ||||
Performance Specifications
| Size (mm) | Size (in.) | Working Pressure (MPa/PSI) | Flow Rate (l/min / GPM) | Burst Pressure 1 (MPa/PSI) | Burst Pressure 2 (MPa/PSI) | Burst Pressure 3 (MPa/PSI) |
|---|---|---|---|---|---|---|
| 6.3 | 1/4" | 103 (14935) | 15 (3.96) | 350 (50750) | 310 (44950) | 330 (47850) |
| 10 | 3/8" | 100 (14500) | 20 (5.28) | 350 (50750) | 310 (47850) | 300 (43500) |
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