Smc Pneumatics KQ2R05-07A Plug-in Reducer Fitting 3/16 in

Product Description

The SMC PNEUMATICS KQ2R05-07A is a push-to-connect plug-in reducer tube fitting designed for pneumatic plumbing and fluid-transfer lines. It accepts 3/16-inch OD tubing and reduces to a 1/4-inch stem, allowing techs to transition between two tubing sizes without threading or soldering. The body is brass with a polybutylene insert, rated to 145 psi maximum working pressure. Installation requires no special tooling beyond standard tube cutters - tubing inserts and locks in a single push. This fitting is typically installed by HVAC technicians, pneumatic-system mechanics, or industrial plumbers working on compressed-air or fluid-control circuits.

The KQ2R05-07A suits residential and light-commercial pneumatic control systems, compressed-air distribution lines, and fluid-handling assemblies where a reducer connection is required between different tubing diameters. Its compact profile and push-to-connect design make it well-suited for panel-mounted or in-line applications where access is limited and quick assembly is a priority. The fitting is RoHS compliant, making it appropriate for installations with environmental or materials restrictions.

Key Features

• Push-to-connect design - no threading, soldering, or crimping required for installation
• Reduces from 3/16-inch OD tubing to a 1/4-inch stem outside diameter
• Brass body with polybutylene insert for corrosion resistance and secure tube retention
• Rated to 145 psi maximum working pressure
• Operating temperature range: 23 degrees F to 140 degrees F
• RoHS compliant construction

Compatibility

Designed as an OEM-style replacement or addition for pneumatic and fluid-control systems using 3/16-inch OD push-to-connect tubing with a 1/4-inch stem interface.

Installation Notes

Installation should be performed by a qualified HVAC technician, pneumatic systems mechanic, or licensed plumber. Depressurize and isolate the line completely before removing or installing any fitting. Ensure tubing ends are cut cleanly and squarely with a tube cutter - ragged cuts can compromise the push-to-connect seal. Verify the system operating pressure does not exceed the 145 psi rated maximum before returning the line to service.