Ball valve Ball valves are constructed around a full-bore design that makes sure the product passes through the valve with minimal effect on the flow, and that there is as little pressure drop as possible.     Check Valves The LKC-2 non-return valve is specially designed for use in stainless steel pipe installations to prevent reverse flow.                 Koltek The MH shutter valve is suitable in applications with large partials, high viscous or strict requirements minimizing pressure loss.     LKUV-2 The LKUV-2 is a reliable air-relief valve designed for use when it is important to remove any air present, such as vertical installation on top of a pipe run or container, or upstream of the inlet for a pump.