steel
Flat Face Couplers
Flat Face Hydraulic Quick Couplings(Carbon Steel) International Interchange ISO 16028
Hydronex / Flat Face Couplers
STEEL
Flat Face Couplers
Flat Face Hydraulic Quick Couplings (Carbon Steel) QKEP Series
Professional flat-face hydraulic quick couplers QKEP series with carbon steel construction and high-performance specifications for industrial applications.
Material
Carbon Steel
Surface finish
Chrome Plated
Application
Industrial hydraulic systems, mobile equipment, construction machinery
Flat Face CouplersSTEEL
Flat Face Couplers
FlatFaceHydraulicQuickCouplings(CarbonSteel)QKEPSeries
Professional flat-face hydraulic quick couplers QKEP series with carbon steel construction and high-performance specifications for industrial applications.
Material: Carbon Steel;
Surface Treat: Chrome Plated;
Application: Industrial hydraulic systems, mobile equipment, construction machinery
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
Flat-face design for zero fluid loss
ISO 16028 international interchange compatibility
Carbon steel construction with durability
Quick release mechanism
Reliable poppet valve system
Chrome plated for corrosion resistance
Precision-engineered components
Wide thread compatibility
Specifications
Design Type
Flat-Face
Material
Carbon Steel
Series
QKEP
Surface Treatment
Chrome Plated
Applications
Industrial hydraulic systems
Mobile equipment
Construction machinery
General industrial applications
Industrial hydraulic systems
Mobile equipment
Construction machinery
General industrial applications
Specification Details
| Body Size (in) | Rated Pressure (Bar) | Flow Rate (L) | Material | Standard Seal Material | Temperature Range (°C) |
|---|---|---|---|---|---|
| 1/4" | 600 | 12 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 3/8" | 550 | 23 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 1/2" | 550 | 45 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 3/4" | 550 | 74 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 1" | 500 | 100 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 1-1/4" | 470 | 189 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 1-1/2" | 400 | 288 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
| 2" | 350 | 379 | Carbon Steel | NBR (other material available on request) | -20°C to +125°C |
Couplers Female Thread / Female
| Metric | Imperial | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part No. | Thread | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread | Overall Length (in) | Hex Size (in) | Largest Diameter (in) |
| QKEP03-03SF | G3/8 | 65.8 | 30 | 41.8 | QKEP03-N03SF | NPT3/8 | 2.59 | 1.18 | 1.65 |
| QKEP03-04SF | G1/2 | 70.8 | 30 | 41.8 | QKEP03-N04SF | NPT1/2 | 2.79 | 1.18 | 1.65 |
| QKEP04-04SF | G1/2 | 77.8 | 36 | 49.8 | QKEP04-N04SF | NPT1/2 | 3.06 | 1.42 | 1.96 |
| QKEP04-06SF | G3/4 | 84.8 | 36 | 49.8 | QKEP04-N06SF | NPT3/4 | 3.34 | 1.42 | 1.96 |
| QKEP06-06SF | G3/4 | 84.8 | 41 | 53.8 | QKEP06-N06SF | NPT3/4 | 3.34 | 1.61 | 2.12 |
| QKEP06-08SF | G1 | 97.7 | 46 | 58.8 | QKEP06-N08SF | NPT1 | 3.85 | 1.81 | 2.31 |
| QKEP08-08SF | G1 | 99.7 | 46 | 58.8 | QKEP08-N08SF | NPT1 | 3.93 | 1.81 | 2.31 |
| QKEP08-10SF | G1-1/4 | 105.8 | 55 | 69.8 | QKEP08-N10SF | NPT1-1/4 | 4.17 | 2.17 | 2.75 |
| QKEP10-10SF | G1-1/4 | 106.8 | 55 | 69.8 | QKEP10-N10SF | NPT1-1/4 | 4.2 | 2.17 | 2.75 |
| QKEP12-10SF | G1-1/4 | 133.5 | 65 | 92 | QKEP12-N10SF | NPT1-1/4 | 5.26 | 2.56 | 3.62 |
| QKEP12-12SF | G1-1/2 | 133.5 | 65 | 92 | QKEP12-N12SF | NPT1-1/2 | 5.26 | 2.56 | 3.62 |
| QKEP16-16SF | G2 | 224.8 | 90 | 200 | QKEP16-N16SF | NPT2 | 8.85 | 3.54 | 7.87 |
Nipple Female Thread / Male
| Metric | Imperial | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part No. | Thread | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) | Part No. | Thread | Overall Length (mm) | Hex Size (mm) | Largest Diameter (mm) |
| QKEP03-03PF | G3/8 | 82.5 | 27 | 33 | QKEP03-N03PF | NPT3/8 | 3.25 | 1.06 | M33x2 |
| QKEP03-04PF | G1/2 | 85 | 27 | 33 | QKEP03-N04PF | NPT1/2 | 3.35 | 1.06 | M33x2 |
| QKEP04-04PF | G1/2 | 95 | 36 | 40 | QKEP04-N04PF | NPT1/2 | 3.74 | 1.42 | M40x3 |
| QKEP04-06PF | G3/4 | 97.4 | 36 | 40 | QKEP04-N06PF | NPT3/4 | 3.83 | 1.42 | M40x3 |
| QKEP06-06PF | G3/4 | 99 | 36 | 45 | QKEP06-N06PF | NPT3/4 | 3.9 | 1.42 | M45x3 |
| QKEP06-08PF | G1 | 113.6 | 46 | 50 | QKEP06-N08PF | NPT1 | 4.47 | 1.81 | M50x3 |
| QKEP08-08PF | G1 | 113.6 | 46 | 50 | QKEP08-N08PF | NPT1 | 4.47 | 1.81 | M50x3 |
| QKEP08-10PF | G1-1/4 | 123.4 | 55 | 58 | QKEP08-N10PF | NPT1-1/4 | 4.86 | 2.17 | M58x3 |
| QKEP10-10PF | G1-1/4 | 123.4 | 55 | 58 | QKEP10-N10PF | NPT1-1/4 | 4.86 | 2.17 | M58x3 |
| QKEP12-10PF | G1-1/4 | 150 | 65 | 80 | QKEP12-N10PF | NPT1-1/4 | 5.91 | 2.56 | M80x4 |
| QKEP12-12PF | G1-1/2 | 150 | 65 | 80 | QKEP12-N12PF | NPT1-1/2 | 5.91 | 2.56 | M80x4 |
| QKEP16-16PF | G2 | 218.8 | 90 | 130 | QKEP16-N16PF | NPT2 | 8.6 | 3.54 | M130x6 |
Accessories - Dust Protections
| Size (mm) | Size (inch) | Aluminum Part Number | Aluminum Color | PVC Part Number | PVC Color |
|---|---|---|---|---|---|
| 10 | 3/8 | CEF-3/8 | PEP-3/8 | ||
| 12.5 | 1/2 | CEF-1/2 | PEP-1/2 | ||
| 20 | 3/4 | CEF-3/4 | PEP-3/4 | ||
| 25 | 1 | CEF-1 | PEP-1 | ||
| 32 | 1 1/4 | CEF-1 1/4 | PEP-1 1/4 | ||
| 40 | 1 1/2 | CEF-1 1/2 | PEP-1 1/2 | ||
| 50 | 2 | CEF-2 | PEP-2 |
Performance Specifications
| Size | Working Pressure @ 0.2 MPa pressure drop | Flow Rate | Burst Pressures | |||
|---|---|---|---|---|---|---|
| mm | inch | MPa (PSI) | l/min (GPM) | MPa (PSI) | MPa (PSI) | MPa (PSI) |
| 6.3 | 1/4" | 60 (8700) | 12 (3.18) | 60 (8700) | 60 (8700) | 150 (21750) |
| 10 | 3/8" | 55 (7975) | 23 (6.10) | 55 (7975) | 55 (7975) | 140 (20300) |
| 12.5 | 1/2" | 55 (7975) | 45 (11.93) | 55 (7975) | 55 (7975) | 140 (20300) |
| 20 | 3/4" | 55 (7975) | 74 (19.61) | 55 (7975) | 55 (7975) | 140 (20300) |
| 25 | 1" | 50 (7250) | 100 (26.50) | 50 (7250) | 50 (7250) | 125 (18125) |
| 31.5 | 1 1/4" | 47 (6815) | 189 (50.19) | 47 (6815) | 47 (6815) | 120 (17400) |
| 40 | 1 1/2" | 40 (5800) | 288 (76.32) | 40 (5800) | 40 (5800) | 110 (15950) |
| 50 | 2" | 35 (5075) | 379 (100.44) | 35 (5075) | 35 (5075) | 110 (15950) |
Other Flat Face Couplers
steel
Flat Face Couplers
Flat Face Hydraulic Quick Couplings(Carbon Steel) International Interchange ISO 16028 Qkpt Series
steel
Flat Face Couplers
Flat Face Hydraulic Quick Couplings(Steel) Kdf Series
steel
Flat Face Couplers
Flat Face Hydraulic Quick Couplings(Stainless Steel) International Interchange ISO 16028 Qkps Series
