- Seven-position top-mount multiport valve designed to be compatible with any above-ground sand filter in the Pro or VL series. - Built-in sight glass lets you easily monitor water and know exactly when the backwash cycle is complete for optimal cleaning results. - Durable construction from stainless steel and ABS components delivers long-lasting strength and reliability. - Lever handle allows effortless operation, providing smooth and simple switching between valve positions for maintenance and regular use. - Key benefits: broad compatibility with Pro and VL above-ground filters, clear visibility during cycles, robust build, and straightforward operation. - Use scenarios: - Backwashing a Pro or VL above-ground sand filter to remove accumulated debris and restore filtration efficiency. - Switching to rinse or waste modes during maintenance or partial drain work. - Routine servicing or seasonal checks by cycling through positions quickly without disassembly.