The RHV variable speed valveless piston pumps with ceramic internals from Fluid Metering, offer the suitable solution for directly injecting hydrazine into water and steam systems used in power plant applications. In most power plants hydrazine is typically used as an anti corrosion agent and is pre-mixed and diluted before injection. This requires special holding tanks, large pumps and constant maintenance. The RHV System eliminates these concerns by injecting concentrated hydrazine directly into the water lines at system pressure, without dilution. It will inject hydrazine at rates as low as 0.2 millilitres per minute up to 180 millilitres per minute at an accuracy of 1% or better. It is self priming and will not lose prime even at very low flow rates. The integral miniature pump head features chemically inert, sapphire-hard ceramic internals, which provides millions of maintenance-free, calibration-free cycles of service.