These prevent backwash into potable water systems or are used for containment and cross connection control (for non-health-hazard applications). These are portable units (max 175 psi) that are furnished with ball type test cocks and quarter turn, full port bronze ball valves. Backflows for permanent installations must be installed by a certified pipefitter. We can also arrange for certification when it is ready for installation (TBACK-200). Repair seal kits available (N142RK-), replacement test cocks (N142TC-), & replacement ball valves (N14200-xxxBVT).

Detail Comments: Other sizes available on request. Please note 2-1/2" - 10" sizes are not portable units.