Yellow Jacket 5/16" Female Quick Coupler to 1/4" Male Flare — Model 19173 with Schrader Core & CH14 Valve Opener

Yellow Jacket 19173 couples a 5/16" female quick-connect to a 1/4" male flare, featuring Schrader valve cores and a patented CH14 valve opener for fast, reliable HVAC hookups.

This compact coupler is built for HVAC technicians, contractors and serious DIYers who need a dependable, easy-to-handle adapter for refrigerant and manifold connections. Machined for consistent fit, the unit incorporates internal Schrader valve cores on the male flare end to control flow and prevent leaks when disconnected. The female end is knurled deeply to improve grip even with gloves, and the integrated CH14 patented 'adjust a valve' tool saves a step when working with 1/4" female fittings.

How does the Schrader valve core affect performance?

Including a Schrader valve core in the male flare end lets the fitting seal and isolate refrigerant lines without requiring an external valve. This reduces refrigerant loss during coupling and uncoupling and simplifies pressure control on test and service ports.

• Built-in Schrader core prevents unwanted discharge when disconnected
• Quick isolation for safe pressure checks and evacuations
• Compatible with standard Schrader-equipped HVAC ports

What makes the female end easy to grip and operate?

The female quick coupler end has a deep knurling pattern designed for a secure hold, even when wearing work gloves or when hands are oily. That texture reduces slippage and allows technicians to attach or detach the coupler quickly with one hand.

• Deep knurling improves torque control and reduces slip
• Textured surface suited to gloved use on job sites
• Compact body helps reach tight spaces without sacrificing grip

How does the patented CH14 valve opener help on the job?

The CH14 patented 'adjust a valve' tool is built into all 1/4" female ends to open or manipulate service valves without carrying an extra tool. It streamlines common HVAC tasks and speeds up service routines by combining functions into the coupler itself.

• Integrated CH14 opener works with 1/4" female service valves
• Eliminates the need for a separate valve-adjusting tool
• Reduces tool changes and saves time during service calls

What are the product specifications and packaging details?

This model is identified as Yellow Jacket 19173 and is manufactured in China. The item ships as a compact unit in a small package; each package measures about 2.0" by 2.0" by 2.0" and weighs roughly 2.0 lb, making it easy to store, carry, or include in service kits.

• Model: 19173 (Yellow Jacket)
• Connection: 5/16" female quick coupler to 1/4" male flare
• Origin: China; package size ~2.0" L x 2.0" W x 2.0" H; package weight ~2.0 lb

Who this is for: The Yellow Jacket 19173 is ideal for HVAC technicians, refrigeration service professionals, and experienced DIYers who require a durable, multi-function coupler that reduces tool clutter and improves field efficiency. If you routinely work with 1/4" flare service ports and need reliable sealing with minimal refrigerant loss, this coupler offers a practical, time-saving solution.