IN Series Industrial Type Quick Couplings

IN Series Industrial Quick Couplings for Pneumatic Equipment

IN Series industrial quick couplings are designed for pneumatic systems that require convenient connection changes between air hoses, tools, and equipment. The series is compatible with Parker 20 Series nipples according to the supplied product information. Its range of socket and plug configurations gives equipment manufacturers and maintenance teams more flexibility when matching coupling ends to existing pipework.

Connection Options, Materials and Technical Specifications

The IN series is available in three nominal body sizes to accommodate different connection and airflow requirements:

● IN20: 1/4" body size, with a 2.0 MPa rated pressure and a 6-ball locking device.

● IN30: 3/8" body size, with a 2.0 MPa rated pressure and an 8-ball locking device.

● IN40: 1/2" body size, with a 2.0 MPa rated pressure and an 8-ball locking device.

● Temperature range: -10°C to +70°C, as listed in the supplied specifications.

Connection styles include female pipe thread, male pipe thread, standard hose barb, and push-lock hose barb. The ordering code identifies the series, body size, coupling type, thread size, and material. Brass, carbon steel, and stainless steel SUS303/304 options are listed. Choose the material according to operating pressure, working medium, and environmental conditions rather than appearance alone.

Applications Across Industrial Air Systems

IN Series pneumatic quick couplings can be used in compressed-air distribution, pneumatic tools, equipment maintenance, and automated machinery where connections may need to be changed or serviced. Selecting the correct body size and matching plug profile helps avoid connection incompatibility and unnecessary restrictions in the air line.

Installation and Selection Guidelines

Before installation, confirm that the socket and plug use the same compatible coupling profile. Check the thread type, body size, hose inner diameter, and material suitability.

● Tighten threaded ends with an appropriate tool and sealing method.

● Secure hose connections using a suitable installation method for the hose and fitting.

● Pressurize the system gradually and inspect for leakage and secure engagement.

● Isolate the air supply and release residual pressure before disconnecting or servicing the coupling.

For replacement orders, provide the existing model number or connection dimensions to help identify the appropriate IN Series configuration.