The Zurn® Wilkins 860XL Ball Type Test Cock is installation on backflow preventers as a test port for attaching a differential pressure gauge.
Zurn® Wilkins Test Cock, Resilient Seated Ball Type, Series: 860XL, For Use With: Backflow Preventer, 1/8 in MNPT x 1/4 in FNPT, Bronze, 1-5/8 in L