MK3 NRV Service Kit The MK3 NRV Service Kit is a replacement service kit designed for compatible MK3 non-return valve assemblies used in dairy parlour, wash or liquid handling systems. It provides the service parts needed to refresh the valve, helping maintain reliable one-way flow and reduce the risk of backflow during everyday operation. Non-return valves are important for keeping liquid or air moving in the correct direction through the system. Over time, internal seals and serviceable components can become worn, hardened, split or affected by regular pressure, heat, chemicals and wash cycles. Replacing worn parts with the MK3 NRV Service Kit helps restore dependable valve sealing, supporting smoother flow control and reducing avoidable faults within the wider setup. This kit is useful for farms and service teams carrying out planned maintenance, repairs or fault finding on compatible MK3 NRV assemblies. It is especially helpful where the valve body remains serviceable, but the internal components need replacing to improve response and sealing. Servicing the valve instead of replacing the full assembly can help keep maintenance practical and cost-effective. The MK3 NRV Service K
