Rectorseal ns-uni Universal Locking Refrigerant Cap

Product Description

The RECTORSEAL ns-uni is a universal silver locking cap designed to seal standard Schrader service valves on central air conditioning units and mini-split systems. Precision machined from high-grade brass and surrounded by a protective aluminum shroud, the ns-uni installs with a single screw-on motion and can only be removed with a special proprietary tool. This dual-layer construction prevents unauthorized access, deters refrigerant theft, and reduces the risk of accidental refrigerant mixing. HVAC technicians install these caps as a code-compliance and environmental safeguard on residential and light commercial systems.

The ns-uni is suited for use on central AC systems and mini-splits where Schrader service valves are present. It is commonly installed by licensed HVAC technicians during routine service calls, equipment commissioning, or whenever a system is left unattended for an extended period. The locking design helps prevent refrigerant loss to the atmosphere and reduces the risk of injury to children or untrained individuals who might otherwise access live refrigerant service ports. Sold as a single cap.

Key Features

• Precision machined brass construction with protective aluminum shroud for durability and tamper resistance
• Patented locking design requires a special tool for installation and removal
• Single screw-on installation for fast field use
• Seals standard Schrader service valves to prevent refrigerant leakage and accidental mixing of refrigerant gases
• Helps protect against injury or death from inhalation of dangerous refrigerants
• Compatible with central AC units and mini-split systems

Compatibility

Designed as a universal-fit locking cap for standard 1/4 inch Schrader service valves found on central air conditioning units and mini-split systems.

Installation Notes

Installation and removal require the NOVENT proprietary tool — do not attempt installation or removal with standard valve core tools or pliers. Always recover or isolate refrigerant per EPA Section 608 requirements before servicing the valve. HVAC technicians should verify valve threads are clean and free of debris before seating the cap. This work is typically performed by EPA 608-certified refrigeration technicians.

Technical Specifications

• Valve Type: Schrader service valve
• Size: 1/4 inch
• Material: Brass body with aluminum shroud
• Color: Silver
• Quantity: Single cap
• Unit of Measure: Each

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: ns-uni