Jones Stephens 101D-254D 1/4 Inch Air Cock

Product Description

The JONES STEPHENS 101D-254D is a 1/4 inch air cock designed for controlled venting and air release in plumbing and fluid-handling systems. An air cock is a small manual shutoff or vent valve used to bleed air from lines or isolate flow at a single point. This fitting suits applications where a compact, reliable quarter-turn or needle-style vent point is needed on a pressurized water or fluid line. Licensed plumbers and pipefitters are the typical installers, and the part is sized at 1/4 inch for connection to small-diameter service lines or equipment tapping points.

The 101D-254D is suited for residential and light commercial plumbing installations where air venting or line isolation is required on small-bore piping. Common install scenarios include boiler systems, radiant heating loops, and general plumbing rough-in where trapped air must be released from the system. The compact 1/4 inch size makes it appropriate for equipment-side connections on water heaters, expansion tanks, and similar plumbing appliances.

Key Features

• 1/4 inch connection size for small-bore plumbing and equipment tapping points
• Manual air cock design allows controlled venting or shutoff of air-bound lines
• Compact and lightweight at 0.2 pounds for easy handling and installation in tight spaces
• Designed for use in pressurized plumbing and fluid-handling systems

Compatibility

Designed as an OEM-style replacement or new-installation air cock for 1/4 inch ported plumbing systems and equipment connections in residential and light commercial applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the affected line before installing or replacing the air cock. Use appropriate thread sealant or PTFE tape on threaded connections as required by the fitting type. Do not overtighten the valve body, as this may damage the seat or threads.