Yoshida Mfg. Co.,Ltd.

Fluid　Couplings

NKC　Coupling

NKC　Coupling NKC　Coupling
Our company became the manufacture of the Quick connect Coupling based on the technology that is cultivated in precision parts manufacturing for long time.
Recently,needs of the fluid coupling are diversified in various fields.We are hoping to correspond these demands adequately and promptly.Your Request of the annual lot production and OEM supply are welcomed.By any means,we will do our best devoting ourselves to become your partner.

NL series：For low pressure, wide applications. Single valve type.

NL series ●The shut-off valve built into the socket opens when the plug is inserted and closes when the plug is removed. Thereforel,it is not necessary to operate the main valve when inserting or removing the plug.
●Both the socket and plug are available with male screw connection, female screw connection,or hose connection.Such connections can be combined as desired.
●The fittng sections of models NL-21 to NL-24 are identical size and interchangeable.Those of models NL-44 to NL-48 are also interchangeable with one another.
●The main body is made of steel,brass or stainless steel.When made of steel,the main body is hardened to ensure high durability and a high resistance to abrasion.
●A variety of modeis are available.You can select the best model to suit your specific operating conditions and applications.For example, various pipe and hose connections are available for oil pressure and pneumatic machinery.
NL series
NL series
The download of NL series specifications is here.

YNL series：Simple and secure push-to-connect type.
For low pressure , wide applications single valve type.

YNL series ●As well as NL series,the shut-off valve into the socket opens when the plug is inserted and closes when the plug is removed.Therefore,it is not necessary to operate the main valve when inserting or removing the plug.
●Just push the plug into the socket for simple and secure connection.This reduces connection time and improves efficiency.
●Use YNL series socket and NL series plug together.
●Available only with steel body.Not suitable for water.
●A variety of models are available.You can select the best modet to suit your specific operating conditions and applications.For example,various pipe and hose connections are available for pneumatic machinery.
YNL series
YNL series
The download of YNL series specifications is here.

TS series：For middle & low pressure, wide applications. Valveless type.

TS series ●This valveless model has no valve mechanism in the socket and none in the plug.It is ideal if there is no need to shut the pipe when disconnecting the socket and plug.
●The internal construction features a low flow resistance toreduce pressure loss.This series is thus well-suited to high-viscosity fluids, steam and pulverulent bodies.
●Both the socket and plug are available with male screw connection, female screw connection and hose connection.Such connections can be combined as desired.
●Numerous models are available varying in nominal diameter,body material, O ring material and connection method.You can select precisely the best model for your application and operaing conditions.
TS series
TS series
The download of TS series specifications is here.

KS series：For middle & low pressure, Twin value type.

KS series ●Both the socket and plug of this twin-valve couplng incorporate a shutoff valve.The moment the socket and plug are disconnected,the socket and plug sides of the coupling are completely sealed.
●Because the coupling has been made with great precision by fully utilizing the newest machining technology,a superior sealing performance is ensured even as the socket and plug are connected or disconnected.
・The passage opens the moment the socket or plug is connected and closes the moment the socket or plug is disconnected.This virtually eliminates fluid loss and air entry.
●Numerous models are available varying in nominal diameter,body material,O ring material and valve packing material.Select the model that is best suited to your application and operating conditions.
KS series
KS series
The download of KS series specifications is here.

HP series：For high pressure, Twin valve type.

HP series ●Both the socket and plug of this twin valve coupling incorporate a shutoff valve.The moment the socket and plug are disconnected, the valves on the socket and plug sides contact the mating seat sections to comptetely seal the socket and plug sides.
●The boder is made of S45C steel and hardened to ensure high durability and a high resistance to abrasion.
●This series has been designed for use under high pressure and is highly resistant to vibration and impact.it is ideal for pressurized gas pipes and machinery that uses high oil pressure.
●Due to low pressure loss, this series is ideally suited for highly pressurized oil and gas pipes.
HP series
The download of HP series specifications is here.