Koch Filter P421414 Refrigerant Locking Cap 1/4 Inch Thread

Product Description

The KOCH FILTER P421414 is a universal refrigerant locking cap designed to secure 1/4-inch threaded service ports on HVAC systems. Locking caps prevent unauthorized access to refrigerant ports, helping technicians and building owners maintain EPA Section 608 compliance by reducing the risk of intentional venting or refrigerant theft. The cap threads onto standard 1/4-inch female-pipe-threaded service ports and requires a key or specialized tool to remove. Licensed HVAC technicians install these caps as a final step during system commissioning or service to keep refrigerant circuits protected between service visits.

This cap is suited for residential and light commercial HVAC applications wherever refrigerant service ports require access control. Typical installation points include the suction and liquid line service valves on split systems, packaged units, and mini-splits with standard 1/4-inch service port threads. The universal design simplifies stocking for service technicians who work across multiple equipment brands and configurations.

Key Features

• Universal fit for 1/4-inch female-pipe-threaded refrigerant service ports
• Locking design restricts unauthorized refrigerant access
• Supports EPA Section 608 compliance for refrigerant containment
• Easy application reduces installation time at the service port
• Suitable for residential and light commercial HVAC equipment

Compatibility

Designed as a universal replacement locking cap for HVAC refrigerant service ports with a 1/4-inch thread. Verify existing service port thread size before installation.

Installation Notes

Installation is performed by a licensed HVAC technician. Before working on any refrigerant circuit, follow established refrigerant safety procedures and wear appropriate PPE. Thread the cap onto the service port by hand until snug, then secure per the manufacturer locking mechanism. Do not overtighten, as damage to the port threads or cap body can result in a seal failure.

Technical Specifications

• Thread Size: 1/4 inch
• Thread Type: Female pipe thread
• Application: HVAC refrigerant service port

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: P421414