Kemper Non-Freeze Tank Valves are designed for trouble free service in tough, cold country weather, where other tank valves freeze up. Our self-purging "empty-when-closed" design features a heavy duty nitrile butadiene rubber seat and gland packing to tolerate hydrocarbon liquids for extended periods of time without deterioration. The stainless steel stem meets most corrosive service requirements and the adjustable gland retainer prevents leaking and extends the service life of the packing. Standard external NPT thread pipe connection permits easy make-up at the tank connection, and internal NPT at the valve outlet.