Designed for R22 applications This locking cap key is tailored for R22 systems, providing an essential tool for the installation and removal of locking caps and vacuum components on R22 equipment and tasks. Sturdy and dependable construction Made from robust materials to withstand daily field use, this locking cap key is built for reliable performance. Compact and ergonomic design A lightweight profile makes it easy to carry, while the ergonomic grip reduces hand fatigue during long service calls or when maneuvering in confined spaces. Practical applications R22 HVAC service: Install and remove locking caps and manage vacuum components during routine maintenance or . Field work in tight spaces: Portable tool for access in confined mechanical rooms, basements, or rooftop installations. Refrigerant system commissioning and testing: Quick cap changes to facilitate testing and diagnostics.