Professional manual valve with pressure gauge connector. Compatible with the following Solo sprayers: • SO416 • SO417 • SO425PCLASSIC • SO425PCOMFORT • SO425PPRO • SO435PCOMFORT • SO456 • SO456PRO • SO457 • SO461 • SO462 • SO473DCLASSIC • SO475DCLASSIC • SO475DCOMFORT • SO475DPRO