Midland Industries 620453C Straight Union Ptc Composite

Product Description

The MIDLAND INDUSTRIES 620453C is a straight union fitting designed for push-to-connect pneumatic and fluid line applications. It joins two lines of different diameters - a 1/4-inch connection on one end and a 5/32-inch connection on the other - without tools or thread sealant. The composite body construction meets D.O.T. standards and handles pressures up to 145 psi across a working temperature range of -40 to 140 degrees F. This fitting is installed by HVAC technicians, fleet mechanics, and pneumatic system technicians wherever a secure, leak-free inline union is needed between two push-to-connect lines of differing sizes.

This union is suited for residential and light commercial pneumatic control lines, air brake tubing, and instrumentation tubing where a reducer-style straight union is required. The push-to-connect design on both ends allows fast, repeatable connections without wrenches. Its compact footprint - approximately 1.3 inches in length and 0.5 inches in width and height - makes it practical in tight control-panel and equipment-cabinet installations.

Key Features

• Push-to-connect on both ends - no threading or thread sealant required
• Reduces from 1/4-inch to 5/32-inch inline in a single fitting
• Rated to 145 psi working pressure
• Operating temperature range of -40 to 140 degrees F
• D.O.T. composite body construction for code-compliant air brake and pneumatic applications
• Compact size fits tight enclosures and panel installations

Compatibility

Designed as a D.O.T.-rated composite body push-to-connect straight union for pneumatic tubing and air line applications requiring a 1/4-inch to 5/32-inch inline connection.

Installation Notes

Depressurize and isolate the line completely before disconnecting or installing any push-to-connect fitting. Ensure tubing ends are cut cleanly and squarely for a proper seal - ragged or angled cuts are a common source of leaks. After connection, restore pressure gradually and verify the fitting with a leak-detection solution before returning the system to service. This type of fitting is typically installed by licensed HVAC technicians, certified air brake mechanics, or qualified pneumatic system technicians in accordance with applicable codes.