Yellow Jacket Red 5 PLUS2 Hose 21660

The Yellow Jacket 21660 is a 5 foot red PLUS II charging hose for high side service.

Nitrogen pressure testing is a service procedure where hose selection and handling matter, and it is worth describing because it is frequently done badly.

After brazing repairs or on a new installation, the system is pressurised with dry nitrogen to check for leaks before evacuation. Nitrogen is used because it is inert, dry, and inexpensive, and because it does not contribute to refrigerant emissions.

The pressure applied must be within the system's design limits, which requires a regulator on the nitrogen cylinder. Connecting a hose directly to an unregulated cylinder is dangerous, since cylinder pressure vastly exceeds what any system or hose can withstand.

The hoses used must be rated for the test pressure, and a hose showing any deterioration should not be used.

The test is held for a period and the pressure observed, with allowance made for temperature change, which affects pressure noticeably over several hours.

Nitrogen is also used to purge lines during brazing, preventing internal oxidation.

Applications include refrigeration and air conditioning installation, leak testing, and service.

Brand

Yellow Jacket

SKU

21660

Category

Charging Hoses

Weight

0.5 lbs

Dimensions

8.50" x 8.50" x 1.20"

Price

$35.00

Availability

In stock

Rating

4.8 / 5.0