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The Bard 6031-003 1/4 inch nylon gauge port cap is an OEM refrigerant service port cap used on Bard HVAC equipment to help protect the Schrader valve and keep dirt and moisture out of the charging connection between service visits. A properly fitted cap is a simple but important safeguard that supports leak prevention and reliable service access, especially on wall mount and packaged units that see outdoor exposure. Replace missing or cracked caps during maintenance to help maintain a tight, clean service port and reduce the chance of slow refrigerant loss from contamination or a damaged valve core.
* Orders less than $50 may incure a minimum order fee.