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SUPCO

SUPCO SFL51610 TradeFox Safety Locking Caps 5/16" Pack 10

SKU CH-2Q4J-1V1DD

Safety locking caps for 5/16" refrigerant valves, pack of 10 with key, compatible with R12, R22, R134A, R404A, R410A and other refrigerants

  • Item Count1
  • Locks securely by hand with included key
  • Fits 5/16" access valves on R12, R22, R134A, R404A, R410A systems
  • UV-resistant Nylon PC withstands -40°F to 257°F
  • Meets IRC M 1411.6 and IMC 1101.10 tamper-resistance codes
  • Pack of 10 caps protects against refrigerant theft

TradeFox Locking Caps for 5/16" Valves

These SUPCO TradeFox SFL51610 caps secure refrigerant access valves against unauthorised removal. The pack contains ten caps sized for 5/16 inch fittings and works with R12, R22, R134A, R404A, R410A and other common refrigerants. They help meet IRC M 1411.6 and IMC 1101.10 tamper-resistance requirements for HVAC installations.

Hand-Tight Installation with Included Key

No tools are needed; each cap tightens by hand and locks with the supplied key. The nylon PC thermoplastic resists UV, corrosion, fats, oils and solvents, so the threads stay free even after prolonged outdoor exposure. The only common issue is misplacing the single key, which would prevent future removal without cutting the cap off.

Sustained Outdoor Durability

The material withstands a continuous temperature range of -40 to 257 degrees F without degrading. UV resistance prevents the plastic from becoming brittle during years of rooftop or condenser mounting. Corrosion and solvent resistance ensure the locking mechanism remains operable through seasonal extremes and chemical contact.

Highlights

  • Locks securely by hand with included key
  • Fits 5/16" access valves on R12, R22, R134A, R404A, R410A systems
  • UV-resistant Nylon PC withstands -40°F to 257°F
  • Meets IRC M 1411.6 and IMC 1101.10 tamper-resistance codes
  • Pack of 10 caps protects against refrigerant theft

Specifications

BrandA1 Components
Item Count1

Questions about this item

How can I confirm the SUPCO SFL51610 caps are securing my 5/16" valves correctly after hand-tightening?

Verify each cap is fully seated and cannot be turned by hand; then confirm the included locking key is the only way to remove them, satisfying IRC M 1411.6 and IMC 1101.10 tamper-resistance requirements.

What comes in the box with the SUPCO SFL51610 pack, and do I need any extra tools or keys?

The pack contains ten 5/16" safety locking caps made of UV-resistant nylon PC and one locking key; no tools are required for installation as caps tighten by hand.

Which SUPCO TradeFox cap version should I choose for a system running R410A on 5/16" fittings?

The SFL51610 is the correct version: it fits 5/16" valve fittings, is compatible with R410A, R22, R134A, R404A, R12 and other refrigerants, and operates from -40 to 257 °F.

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