Detects high/low levels in a container Stem diameter of 0. 313” and float diameter of 1. 0” or 1. 125” Polypropylene is a recognized material for food material handling and conveying, and polypropylene-based products are ideal for food applications. Polypropylene is also good for use in agriculture, and for contact with many industrial fluids. Can be used in low temperature food equipment applications (up to 221F, 105C) such as food service steamers and proofers. All NPT vertical switches can be extended with pipe to meet custom tank depths