Smc Pneumatics KQ2U05-99A Push-to-connect Plug 3/16 in

Product Description

The SMC PNEUMATICS KQ2U05-99A is a push-to-connect tube fitting plug designed to cap or terminate a 3/16-inch OD pneumatic or fluid line without tools. The fitting body is constructed from brass with a polybutylene tube contact element, rated for a maximum working pressure of 145 psi. It is used to seal off open push-to-connect ports in pneumatic assemblies, instrumentation lines, and light fluid distribution systems. Licensed plumbers, pipefitters, and industrial maintenance technicians install this type of fitting during system modifications, pressure testing, or when a branch port is temporarily or permanently taken out of service.

The KQ2U05-99A is suited for pneumatic tubing and light-duty fluid lines operating within a temperature range of 23 degrees F to 140 degrees F. It is commonly used in compressed air distribution panels, machine tool pneumatic circuits, and process instrumentation installations where a clean, tool-free port termination is required. The 3/16-inch OD stem and tube size make it compatible with standard small-bore pneumatic tubing of the same outer diameter.

Key Features

• Push-to-connect design allows tool-free tube termination and fast installation
• Brass body construction provides corrosion resistance and mechanical durability
• Rated to 145 psi maximum working pressure for pneumatic and light fluid service
• Operating temperature range of 23 degrees F to 140 degrees F
• 3/16-inch OD stem matches standard small-bore pneumatic tubing
• Compact plug form factor seals open ports without additional hardware

Compatibility

Designed as an OEM-style push-to-connect plug for pneumatic and light fluid distribution systems using 3/16-inch OD tubing.

Installation Notes

Depressurize and isolate the line or manifold before inserting or removing any push-to-connect fitting. Verify that the tubing OD is 3/16 inch and that the tube end is cut cleanly and squarely before insertion to ensure a proper seal. Do not exceed the 145 psi rated working pressure or the 140 degrees F maximum temperature limit. This type of fitting is typically installed by licensed pipefitters, plumbers, or qualified industrial maintenance technicians following applicable system codes and manufacturer guidelines.