The Dwyer BTK2 Backflow Prevention Test Kit is capable of testing hydronic systems with test procedures recommended by ASSE, AWWA, CSA, FCCC, HR-USV, and NEWWA. The BTK2 is comprised of three valves and is specially designed for testing backflow prevention assemblies. The tests can be completed in almost any area by mounting the unit with the included high performance elastic cord. PTFE-lined brass ball valves simplify the adjustment procedure. The large, easy-to-grip needle valve allows for quick adjustment. The kit includes a 4.5" diameter diaphragm differential pressure gauge (0 to 15 psid), a 1.5" diameter in-line pressure gauge (0 to 200 psig), three 3' long hoses (color-coded), three sets of brass adapter fittings for hookups to all standard size test cocks, an elastic cord for hanging/mounting, and a durable polyethylene carrying case.