Sampling Valves are used in the pharmaceutical or food industry to obtain a sample of the product to be handled. Stainless Steel Sampling Valves are made of 316L Stainless Steel and are known by users as sampler valves or "samplers". Normally These valves are small and can come with a clamp connection or an NPT thread. sampling valves are used when in a tank or a line it is required to take a sample of the product that is being handled.