Fire Pipe | Valve | Nozzle | Monitor | Fitting and Connection Welflo Manufacturing NFPA fire pipe, valve, nozzle, monitor, fitting and connection standard with UL and FM certificate. Quikcoup Manufacturing of UL certificated fire groove coupling, fitting and associated valves. Elkhart Brass Manufacturing and supply of UL fire monitor, fire nozzle, building connection, hydrant, cap, plug, fitting,…etc. Other Partner Products