Hydronex / Quick Release Couplers
STEEL
KNV Series (Steel)

Quick Release Couplers

KNV Series (Steel)

Advanced quick release hydraulic couplers with flat-face design and enhanced sealing. KNV series provides reliable performance with minimal fluid loss and extended service life. Engineered for applications requiring high reliability and frequent disconnections.

Material
Steel

Surface finish
Chrome Plated

Application
Industrial hydraulic systems, precision equipment, specialized applications, systems requiring reliable quick-disconnect functionality

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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 pulling back the sleeve

Disconnection by pulling back the female sleeve

Shut off by poppet valve

Connexion under pressure not allowed

Disconnexion under pressure not allowed

Interchangeability US Market

Specifications

Type

Quick Release - Flat Face

Material

Steel

Surface Treatment

Chrome Plated

Design

Advanced Poppet Valve

Applications

Features

•Connexion by pulling back the sleeve
•Disconnection by pulling back the female sleeve
•Shut off by poppet valve
•Connexion under pressure not allowed
•Disconnexion under pressure not allowed
•Interchangeability US Market

Technical Specifications

•High grade carbon steel with heat treated wear parts
•Polyurethane and NBR Backup ring in PTFE
•-25°C to +125°C (-13°F to +257°F)
•According to ISO 7241-2

Female

Female Coupler Diagram
Part No.ThreadOverall Length (mm)Hex Size (mm)Largest Diameter (mm)Part No.ThreadOverall Length (in)Hex Size (in)Largest Diameter (in)
KNV-02SFG1/4502224KNV-N02SENPT1/41.970.870.94
KNV-03SFG3/8572427KNV-N03SFNPT3/82.240.941.06
KNV-04SFG1/2653034KNV-N04SFNPT1/22.561.181.34
KNV-06SFG3/4643642KNV-N06SENPT3/42.521.421.65
KNV-08SFG1714651KNV-N08SFNPT12.81.812.01
KNV-10SFG11/4975056KNV-N10SFNPT11/43.821.972.2
KNV-12SFG11/2916570KNV-N12SFNPT11/23.582.562.76
KNV-16SFG21208990KNV-N16SFNPT24.023.53.54

Male

Male Coupler Diagram
Part No.ThreadOverall Length (mm)Hex Size (mm)Largest Diameter (mm)Part No.ThreadOverall Length (in)Hex Size (in)Largest Diameter (in)
KNV-02PFG1/4492210.8KNV-N02PENPT1/41.930.870.43
KNV-03PFG3/8572412.9KNV-N03PFNPT3/82.240.940.51
KNV-04PFG1/2633016KNV-N04PENPT1/22.481.180.63
KNV-06PFG3/4643623.3KNV-N06PFNPT3/42.521.420.92
KNV-08PFG1684629.7KNV-N08PFNPT12.681.811.17
KNV-10PFG11/4915036.1KNV-N10PENPT11/43.581.971.42
KNV-12PFG11/2856543.5KNV-N12PFNPT11/23.352.561.71
KNV-16PFG2988956.8KNV-N16PENPT23.863.52.24

Performance Specifications

SizeWorking pressureFlow RateBurst Pressures
mminchMPa (PSI)@0.2 MPa dropl/min (GPM)@ 0.2 MPa dropMPa (PSI)MPa (PSI)MPa (PSI)
6.31/4"27 (3915)—22 (5.81)—110 (15950)160 (23200)110 (15950)
103/8"30 (4350)—65 (17.17)—160 (23200)180 (26100)120 (17400)
12.51/2"22 (3190)—75 (19.82)—88 (12760)90 (4350)88 (12760)
203/4"19 (2755)—170 (44.91)—76 (11020)76 (11020)76 (11020)
251"15 (2175)—280 (73.98)—60 (8700)60 (8700)60 (8700)
31.51 1/4"10 (1450)—450 (118.89)—40 (5800)50 (7250)50 (7250)
401 1/2"11 (1595)—450 (118.89)—45 (6525)45 (6525)45 (6525)
502"10 (1450)—1100 (290.62)—40 (5800)40 (5800)40 (5800)