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Gas Ball Valves

NAVAL Gaskugelhahn

NAVAL Gas Ball Valves

Naval Gas ball valves are designed for shut-off applications in natural gas pipelines. All valves fulfil the requirements of European Pressure directive (97/23/EY) and are manufactured to category lll (module H).


The valve has all-welded body and is fitted with carbon-reinforced Teflon seals which are long-lasting against frequent operation, impurities and chemicals. A ground and polished stainless steel ball gives easy turning and reliable operation over many years. A floating ball construction is used. Bevel spring washers keep the seals pressed against the ball to ensure that the valve remains leak-tight regardless of pressure fluctuations. The blow-out proof stem is sealed with two O-rings. In smaller valves, the upper one can be changed and in sizes 50 to 300 both can be changed. The Teflon thrust washer between the stem shoulder and stem housing also acts as a seal. Stem housings of DN65 valves and above are fitted with stainless steel bearings.

Druck- und Temperaturdiagramm


The valve needs no servicing - no adjustment or lubrication and is easy to install, long working life with low running costs. It is easy to insulate because of the long, circular stem housing. The operating lever is detachable and can be re-positioned at 180º. Heavy and unreliable cast components are not used in the construction of the valve body. It is easy to retrofit actuating equipment.

Product informations

PDF Icon Data sheet