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) Kvv Series
The KVV Series Thread Locked Type Hydraulic Couplings feature a large-diameter knurled barrel coupler paired with a slim precision nipple. Designed for maximum flow capacity, the KVV series is ideal for high-flow hydraulic applications where pressure drop minimization is essential.
Material
Carbon Steel
Surface finish
Zinc Plated / Phosphated
Application
High-flow hydraulic systems, large-bore applications, industrial equipment
Threaded CouplersSERIES
Threaded Couplers
ThreadLockedTypeHydraulicCouplings(Steel)KvvSeries
The KVV Series Thread Locked Type Hydraulic Couplings feature a large-diameter knurled barrel coupler paired with a slim precision nipple. Designed for maximum flow capacity, the KVV series is ideal for high-flow hydraulic applications where pressure drop minimization is essential.
Material: Carbon Steel;
Surface Treat: Zinc Plated / Phosphated;
Application: High-flow hydraulic systems, large-bore applications, industrial equipment
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
Connexion by screwing together the two parts
Disconnexion by unscrewing the two parts
Shut off by poppet valve
Connectable under residual pressure
Disconnexion under residual pressure
Interchangeability according to Fasterinternal Standards
Specifications
Standard
ISO 7241
Body Material
Carbon Steel
Seal Material
NBR
Surface Treatment
Zinc 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
High-flow industrial hydraulics
Large-bore system connections
Heavy construction equipment
Mining and quarrying machinery
High-flow industrial hydraulics
Large-bore system connections
Heavy construction equipment
Mining and quarrying machinery
Nipple Female Thread / Male
| Part No. | Thread Size | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread Size | Overall Length (inch) | Hex Size (inch) | Largest Diameter (inch) |
|---|---|---|---|---|---|---|---|---|---|
| KVV-02PF | G1/4 | 33 | 19 | 14.1 | KVV-N02PF | NPT1/4 | 1.3 | 0.75 | 0.56 |
| KVV-03PF | G3/8 | 41 | 24 | 18.9 | KVV-N03PF | NPT3/8 | 1.61 | 0.94 | 0.74 |
| KVV-04PF | G1/2 | 49 | 27 | 20.5 | KVV-N04PF | NPT1/2 | 1.93 | 1.06 | 0.81 |
| KVV-06PF | G3/4 | 62 | 34 | 27.9 | KVV-N06PF | NPT3/4 | 2.44 | 0.34 | 1.1 |
| KVV-08PF | G1 | 70 | 41 | 31.3 | KVV-N08PF | NPT1 | 2.75 | 0.61 | 1.23 |
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.) |
|---|---|---|---|---|---|---|---|---|---|
| KVV-02SF | G1/4 | 59.7 | 27 | 30 | KVV-N02SF | NPT1/4 | 2.35 | 1.06 | 1.18 |
| KVV-03SF | G3/8 | 71.9 | 34 | 38 | KVV-N03SF | NPT3/8 | 2.83 | 1.34 | 1.5 |
| KVV-04SF | G1/2 | 78.7 | 38 | 42 | KVV-N04SF | NPT1/2 | 3.1 | 1.5 | 1.65 |
| KVV-06SF | G3/4 | 105.6 | 50 | 55 | KVV-N06SF | NPT3/4 | 4.16 | 1.97 | 2.17 |
| KVV-08SF | G1 | 124 | 55 | 61 | KVV-N08SF | NPT1 | 4.88 | 2.17 | 2.42 |
Specification Details
| Body Size (in) | Rated Pressure (Bar) | Flow Rate (L) | Material | Standard Seal Material | Temperature Range |
|---|---|---|---|---|---|
| 1/4" | 350 | 18 | Carbon Steel | NBR | -20 to +125 |
| 3/8" | 300 | 30 | Carbon Steel | NBR | -20 to +125 |
| 1/2" | 300 | 45 | Carbon Steel | NBR | -20 to +125 |
| 3/4" | 250 | 90 | Carbon Steel | NBR | -20 to +125 |
| 1" | 230 | 140 | Carbon Steel | NBR | -20 to +125 |
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 | CVV-1/4 | CVVS-1/4 | PVV-1/4 | PVVS-1/4 | ||
| 10 | 3/8 | CVV-3/8 | CVVS-3/8 | PVV-3/8 | PVVS-3/8 | ||
| 12.5 | 1/2 | CVV-1/2 | CVVS-1/2 | PVV-1/2 | PVVS-1/2 | ||
| 20 | 3/4 | CVV-3/4 | CVVS-3/4 | PVV-3/4 | PVVS-3/4 | ||
| 25 | 1 | CVV-1 | CVVS-1 | PVV-1 | PVVS-1 | ||
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" | 35 (5000) | 18 (4.8) | 170 (24700) | 140 (20000) | 150 (21800) |
| 10 | 3/8" | 30 (4350) | 30 (7.9) | 120 (17400) | 120 (17400) | 150 (21800) |
| 12.5 | 1/2" | 30 (4350) | 45 (12) | 130 (18900) | 120 (17100) | 160 (23000) |
| 20 | 3/4" | 25 (3600) | 90 (24) | 100 (14500) | 100 (14500) | 120 (17400) |
| 25 | 1" | 23 (3300) | 140 (37) | 100 (14500) | 90 (13000) | 100 (14500) |
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