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Two red multi-function keys with six brass caps

BFKK

BFKK 4-in-1 HVAC Locking Cap Key & 6 Pcs 1/4" Cap 2 Pack

SKU CH-CQ8G-TBSYK

Two universal keys and six brass caps secure R22 and R410A service ports against tampering and refrigerant loss

  • All-in-one kit includes two keys and six caps for complete service coverage
  • 4-in-1 key fits both R22 and R410A locking caps across systems
  • Tamper-resistant brass caps with dedicated key prevent unauthorized access and refrigerant loss
  • High-strength key and solid brass caps withstand harsh weather and heavy daily use
  • Anti-slip grip reduces fatigue while compact size fits easily in tool bags

All-in-One HVAC Service Kit

This 2-pack kit combines two universal 4-in-1 locking cap keys with six 1/4 inch brass locking caps. It is built for technicians who service R22 air-conditioning systems and want a single package for installation, repair and maintenance tasks. The multi-key also fits R410A caps, so one tool covers both common refrigerants.

Replaces Separate Key and Cap Purchases

Previously you would buy a dedicated key and a box of caps separately; this kit bundles both, cutting procurement time and ensuring the key always matches the supplied caps. The jump is worth it when you regularly work on systems using R22 or R410A and need tamper-resistant sealing on every service call.

Check Valve Port Size and Refrigerant Type

Verify that the target units use standard 1/4 inch valve ports and run on R22 or R410A refrigerant before ordering. The caps are designed specifically for R22 systems, while the key accommodates both refrigerants; mismatched ports or other refrigerants will prevent proper fit and sealing.

Highlights

  • All-in-one kit includes two keys and six caps for complete service coverage
  • 4-in-1 key fits both R22 and R410A locking caps across systems
  • Tamper-resistant brass caps with dedicated key prevent unauthorized access and refrigerant loss
  • High-strength key and solid brass caps withstand harsh weather and heavy daily use
  • Anti-slip grip reduces fatigue while compact size fits easily in tool bags

Specifications

No published specifications for this item yet.

Questions about this item

Does the 4-in-1 key fit standard 1/4 inch valve ports on R22 and R410A systems?

Yes, the multi-key tool is designed to work with both R22 and R410A refrigerant locking caps and precisely fits standard 1/4 inch valve ports.

How do I install the brass locking caps, and what step is often missed?

Thread each cap onto the service port by hand, then use the dedicated key to tighten until the lock engages; the step often missed is confirming the cap is fully seated before locking.

When should the six brass locking caps be replaced?

Replace caps if the brass shows corrosion, the threads are damaged, or the seal no longer holds refrigerant pressure during routine service checks.

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