Pack of 2 multifunction air and flush valves designed for use with pool spray systems, cistern filling, ductless exhaust, condensate and vacuum pipe applications. These valves provide controlled airflow and diversion for a range of plumbing and HVAC tasks, helping to prevent airlocks and maintain steady flow. Key benefits Versatile function: Acts as an air release valve, vent diverter, flush valve and filling valve for a variety of systems. Use the same valve for multiple plumbing and HVAC needs. Improves system performance: Facilitates proper venting and condensate drainage to reduce airlocks, sputtering, and intermittent flow problems. Simple retrofit: Pack of two valves for replacing worn parts or installing additional vents without major modifications. Reliable operation: Engineered for consistent opening and closing behavior to support steady airflow and flushing where needed. Space efficient: Compact form suitable for tight installation locations commonly found in cisterns, condensate lines, ductless exhaust runs, and pool equipment. Features and specifications Quantity: 2 valves per pack for spare or paired installations. Functionality: Air release and venting, flow diversion, cistern filling support, condensate flush, vacuum pipe venting. Compatibility: Compatible with common residential and light commercial hose, pipe and ductless exhaust configurations used in pools, toilets and HVAC condensate systems. Performance: Designed to balance air release and water flow so systems maintain steady operation and avoid interruptions caused by trapped air. Typical applications and use scenarios Pool spray and filtration lines: Install the valve to release trapped air from spray outlets and lines, improving spray performance and reducing noise from air in the system. Cistern and toilet filling: Use as a filling or flush valve in cisterns to manage inlet flow and reduce airrelated fluctuations during tank refill. Ductless HVAC and condensate drains: Place in condensate or vacuum lines to provide controlled venting and prevent airlocks that can interrupt drainage or reduce appliance efficiency. Installation tips Locate the valve where trapped air collects or where a drain or vent is needed for consistent operation. Ensure mating hose or pipe fittings are clean and match the valve connection to avoid leaks. When replacing an old valve, compare function and connection style to confirm compatibility before installation. What is included Two multifunction air and flush valves suitable for pool, cistern, condensate and vacuum pipe applications. This pack provides a simple, durable solution for common venting and flushing needs in plumbing and HVAC systems where controlled air release and flow diversion improve overall performance.