Project Description

Steel Flat Face Hydraulic Coupling QKEP

Hydraulic Quick Couplings QKEP

Carbon Steel Flat Face Hydraulic Quick Connect Couplings QKEP Series Interchange ISO 16028 Couplings

  • Connexion / Disconnexion by Screwing together the two parts

  • Shut off by Flat Face Valve
  • Disconnexion under pressure allowed; No spillage

  • Interchangeability Stucchi Market

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Flat Face Hydraulic Quick Coupler QKEP Series ISO 16028

Carbon Steel Flat Face Hydraulic Plug With ISO 16082 interchanage, QPEP-PF Series is mainly applied for Agriculture, Industry, hydraulic tools, Earth moving, Building & Construction.

Hydraulic Coupler With ISO 16028 interchange QKEP-SF

Female Connector Socket

PART NO. Thread E F G
(mm.) (mm.) (mm.)
QKEP03-03SF G3/8 65.8 30 41.8
QKEP03-04SF G1/2 70.8 30 41.8
QKEP04-04SF G1/2 77.8 36 49.8
QKEP04-06SF G3/4 84.8 36 49.8
QKEP06-06SF G3/4 84.8 41 53.8
QKEP08-08SF G1 97.7 46 53.8
QKEP08-08SF G1 99.7 46 58.8
QKEP08-10SF G1-1/4 105.8 55 69.8
QKEP10-10SF G1-1/4 106.8 55 69.8
QKEP12-10SF G1-1/4 133.5 65 92
QKEP12-12SF G1-1/2 133.8 65 92
QKEP16-16SF G2 224.8 90 200
PART NO. Thread E F G
 (in.)  (in.)  (in.)
QKEP03-N03SF NPT3/8 2.59 1.18 1.65
QKEP03-N04SF NPT1/2 2.79 1.18 1.65
QKEP04-N04SF NPT1/2 3.06 1.42 1.96
QKEP04-N06SF NPT3/4 3.34 1.42 1.96
QKEP06-N06SF NPT3/4 3.34 1.61 2.12
QKEP08-N08SF NPT1 3.85 1.81 2.31
QKEP08-N08SF NPT1 3.93 1.81 2.31
QKEP08-N10SF NPT1-1/4 4.17 2.17 2.75
QKEP10-N10SF NPT1-1/4 4.2 2.17 2.75
QKEP12-N10SF NPT1-1/4 5.26 2.56 3.62
QKEP12-N12SF NPT1-1/2 5.26 2.56 3.62
QKEP16-N6SF NPT2 8.85 3.54 7.87
Hydraulic Coupler With ISO 16028 interchange QKEP-PF

Male PLugs

PART NO. Thread A B G
(mm.) (mm.) (mm.)
QKEP03-03SF G3/8 82.5 27 M33*2
QKEP03-04SF G1/2 85 27 M33*2
QKEP04-04SF G1/2 95 36 M40*2
QKEP04-06SF G3/4 97.4 36 M40*2
QKEP06-06SF G3/4 99 36 M45*3
QKEP08-08SF G1 113.6 46 M50*3
QKEP08-08SF G1 113.6 46 M50*3
QKEP08-10SF G1-1/4 123.4 55 M58*3
QKEP10-10SF G1-1/4 123.4 55 M58*3
QKEP12-10SF G1-1/4 150 65 M80*4
QKEP12-12SF G1-1/2 150 65 M80*4
QKEP16-16SF G2 218.4 90 M130*6
PART NO. Thread A B C
 (in.)  (in.)  (in.)
QKEP03-N03SF NPT3/8 3.25 1.06 M33*2
QKEP03-N04SF NPT1/2 3.35 1.06 M33*2
QKEP04-N04SF NPT1/2 3.74 1.42 M40*2
QKEP04-N06SF NPT3/4 3.83 1.42 M40*2
QKEP06-N06SF NPT3/4 3.9 1.42 M45*3
QKEP08-N08SF NPT1 4.47 1.81 M50*3
QKEP08-N08SF NPT1 4.47 1.81 M50*3
QKEP08-N10SF NPT1-1/4 4.86 2.17 M58*3
QKEP10-N10SF NPT1-1/4 4.86 2.17 M58*3
QKEP12-N10SF NPT1-1/4 5.91 2.56 M80*4
QKEP12-N12SF NPT1-1/2 5.91 2.56 M80*4
QKEP16-N6SF NPT2 8.6 3.54 M130*6

Flat Face Hydraulic Coupler QKEP Applicatoin

Hydraulic Coupler With ISO 16028 interchange QKEP Application
Part No. ISO Thread Size Working Pressure Rated Flow
(inch) (PSI) (L/min)
QKEP-02 DN6.3 BSPT1/4 BSPP1/4 NPT1/4 1/4 8700 12
QKEP -03 DN10 BSPT 3/8 BSPP3/8 NPT3/8 3/8 7975 23
QKEP -04 DN12.5 BSPT 1/2 BSPP 1/2 NPT1/2 1/2 7975 45
QKEP -06 DN20 BSPT 3/4 BSPP 3/4 NPT3/4 3/4 7975 74
QKEP -08 DN25 BSPT 1 BSPP 1 NPT1 1 7250 100
QKEP -10 DN31.5 BSPT 1-1/4 BSPP 1-1/4 NPT1-1/4 1-1/4 6815 189
QKEP -12 DN40 BSPT 1-1/2 BSPP 1-1/2 NPT1-1/2 1-1/2 5800 288
QKEP -16 DN50 BSPT 2 BSPP 2 NPT2 2 5057 379
* Connexion by screwing together the two parts

* Disconnexion by unscrewing the two parts

* Shut off by flat face valve

* Connectable with male part under residual pressure (35Mpa/5075PSI) without using tools

* Disconnexion under pressure allowed

* No spillage during connexion and Disconnexion

* Interchangeability Stucchi market

* High grade carbon steel with heat treated wear parts

* Polyurethane and NBR Backup ring in PTFE

* Temperature Range (-25°C to +100°C)

* 100,000 cycles at 133% of rated pressure disconnected

* 1,000,000 cycles at 133% of rated pressure connected

* Tested According to ISO 7241-2 specifications

Standard : ISO  16028
Size : 1/4' - 2'
Connection : Locking Balls
Media : Hydraulic
Plating: Zinc With Clear Trivalent Chromate
Material: Carbon Steel, Brass, Stainless Steel
What are Quick Coupling

Hydraulic quick couplings provide users with the ability to rapidly connect and disconnect hydraulic hoses to machines or other sections of plumbing. Also called quick-connects or quick disconnects, these fittings allow fluid to flow when the male and female sides are locked together. Conversely, when disconnected, the quick couplings prevent fluid leakage using check valves to block exiting fluid.

Quick connect couplers are manufactured by multiple manufacturers and can be often interchanged. Longwei supplies the highest quality hydraulic quick disconnect couplers such as flushface, ISO A, ISO B, wingnut, Ag, and Skid Steer.

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