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The Zurn Wilkins 860XL Resilient Seated Ball Type Test Cock is installed on backflow preventers as a test port for attaching a differential pressure gauge. The RK14-860XL is a standard test cock repair kit containing four 1/4" test cocks compatible with 1-1/4" - 2" backflow preventers.
860XL Standard Test Cocks Repair Kit compatible with 1-1/4'' - 2'' backflow preventers