Part Number 248500105 Air Relief Valve and Gauge Assembly Description: The 248500105 is an air relief valve and pressure gauge assembly designed for pool and spa cartridge filter systems. Constructed from refined brass and ABS, the assembly resists temperatures and corrosion common in pool and spa environments. It releases trapped air to restore proper flow and provides reliable pressure readings to support accurate system adjustments. Key benefits: Prevents air locking in cartridge filters by allowing quick and controlled air release. Provides clear pressure feedback for timely adjustments and maintenance decisions. Durable materials resist corrosion and heat, increasing service life in pool and spa settings. Helps maintain consistent filtration performance and clearer water by reducing airrelated flow disruption. Features and attributes: Part number: 248500105 for easy identification and replacement. Materials: refined brass body components and ABS plastic gauge housing for durability and corrosion resistance. Function: combined air relief valve and pressure gauge to remove trapped air and monitor filter pressure. Compatibility: engineered for use with pool and spa cartridge filter systems. Performance: accurate pressure indication to support precise adjustments to filtration settings. Typical applications: Startup and priming: Use during filter startup to bleed trapped air and quickly reestablish normal water flow. Routine maintenance: Monitor pressure to determine when cartridge cleaning or replacement is needed and to confirm correct reassembly after service. Troubleshooting: Release air before diagnosing flow or pressure issues to isolate causes and reduce unnecessary repairs. Installation and use notes: Install the assembly in the filter head or designated valve port for cartridge filters following the equipment manufacturer recommendations. Regularly check the gauge reading and relieve air when pressure indicates air accumulation or reduced flow. Inspect the valve and gauge periodically for signs of wear or damage and the assembly if accuracy or sealing is compromised. The 248500105 valve and gauge assembly provides a straightforward way to control air buildup and monitor pressure in pool and spa cartridge filter systems, helping maintain reliable filtration performance.