NT Series Japanese Type Push-to-connect Quick Couplings

Japanese Type Quick Couplings for High-Flow Air Connections

The NT Series is designed for pneumatic applications where frequent tool changes and efficient airflow are important. Based on the Japanese industrial plug profile, these quick couplings feature a self-sealing socket and a through-type plug. The push-to-connect design allows operators to insert the plug directly into the socket, making connection and disconnection quick and convenient.

With a 1/4-inch body size and a maximum working pressure of 2.0 MPa, the NT20 series provides a practical connection option for compressed-air lines and pneumatic equipment. It is interchangeable with NITTO 20, 30 and 40 series, Parker-Rectus 13 and CEJN 315 profiles, supporting replacement in compatible systems.

Six-Ball Locking and Double-Seal Construction

NT Series Japanese pneumatic quick couplings combine a robust locking structure with an internal double-sealing arrangement to help maintain airtight connections during operation.

Key design features include:

● Six-ball locking: Six stainless steel balls secure the plug inside the socket.

● One-hand operation: The push-to-connect sleeve simplifies routine tool changes.

● High airflow: The internal passage is designed to support high-flow pneumatic applications.

● Material options: Chrome-plated carbon steel, brass and SUS304/303 stainless steel.

● Seal choices: NBR is commonly used, with FKM and EPDM available for different operating conditions.

● Operating range: 2.0 MPa maximum working pressure and -10°C to +70°C temperature range.

Where NT20 Pneumatic Couplings Are Used

These Japanese-style air couplings are suitable for equipment that needs dependable compressed-air connections and regular accessory replacement. Typical applications include:

● Air compressors and pneumatic tool systems

● Automotive maintenance and repair equipment

● Lawn mowers and spraying equipment

● General industrial machinery and compressed-air lines

The NT20 profile is especially useful when equipment already uses compatible NITTO-style plugs.

Socket and Plug Configurations for Flexible Installation

The NT20 range offers several connection styles to suit different piping arrangements:

● Socket types: Female thread, male thread, standard hose barb and push-lock hose barb.

● Plug types: Female thread, male thread, standard hose barb and push-lock hose barb.

● Thread options: 1/4", 3/8" and 1/2", depending on the model.

● Hose sizes: 1/4", 3/8" and 1/2" inner diameter options.

Select the socket and plug by matching the connection profile, thread standard and hose dimensions. During installation, use the correct sealing method for the thread type, tighten with the designated hex section, and check for leakage before operation. Always release system pressure before disconnecting components.

With multiple connection configurations and compatibility with established Japanese profiles, NT Series couplings help simplify pneumatic equipment connection and maintenance.