The Bell & Gossett UBY is a combination wye strainer, full port shut-off valve and union for use in HVAC systems. Strainers are furnished with a 20 mesh stainless steel screen, hose end drain valve for purging, one pressure / temperature port for commissioning, and one plugged bypass port. Three additional ¼" taps are plugged and available for accessories when specified. A variety of pipe connections are available on both the fixed and union ends.