Midland Industries 00268-0304 Captive Sleeve Male Adapter

Product Description

The MIDLAND INDUSTRIES 00268-0304 is a brass captive sleeve male adapter designed to transition a 3/16 inch compression connection to a 1/4 inch male NPTF threaded port. The captive sleeve design retains the compression sleeve on the fitting body, preventing loss during disassembly and simplifying reinstallation in tight spaces. Constructed from brass, this adapter handles a wide temperature range of -65 to 250 degrees F, making it suitable for fuel, refrigeration, and instrument tubing applications. Plumbers, HVAC technicians, and instrumentation professionals install this fitting where small-diameter tubing must terminate at a threaded male port.

This adapter is used in residential and light commercial applications involving small-bore tubing runs. Typical scenarios include connecting 3/16 inch copper or compatible tubing to equipment manifolds, control valves, or instrument ports with 1/4 inch NPTF female threads. Its compact profile fits in panel cutouts and equipment enclosures where clearance is limited. The NPTF thread form provides a pressure-tight mechanical seal without relying solely on thread sealant.

Key Features

• Captive sleeve retains compression sleeve on body for easier handling during service
• 3/16 inch compression inlet connects to standard small-diameter tubing
• 1/4 inch male NPTF outlet for dry-seal threaded connections
• Brass construction resists corrosion in fuel, air, and refrigerant service
• Rated from -65 to 250 degrees F for broad application compatibility

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems requiring a 3/16 inch compression to 1/4 inch male NPTF transition in brass captive sleeve compression configurations.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified instrumentation mechanic. Shut off and depressurize the system before disassembly or installation. Hand-tighten the compression nut onto the fitting body, then advance with a wrench per standard compression fitting practice. Apply appropriate thread sealant to the NPTF male threads as required by the application and local codes.