Full Bore Valve

Flowserve Naval ball valves are suitable for District Heating (CHP) installations, Heat Transfer piping, oil lines and oxygen-free water lines.

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  • Brands:
    NAVAL

Flowserve Naval ball valves are suitable for District Heating (CHP) installations, Heat Transfer piping, oil lines and oxygen-free water lines.

The valve has an all-welded body and is fitted with carbon-reinforced Teflon seals which are longlasting 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 2 O-rings. In smaller valves, the upper one can be changed and in sizes 50 to 300mm both can be changed. The Teflon thrust washer between the stem shoulder and stem housing also acts as a seal. Stem housings of 50mm valves and above are fitted with stainless steel bearings. Flowserve Naval ball valves are manufactured in accordance with European Pressure Equipment Directive 97/23 EY. Naval Oy applies Module H as conformity assessment procedure (=full quality assurance) controlled by Det Norske Veritas as notified body. Naval Oy has a certified quality system ISO 9001 and certified environmental management system ISO 14001.

CHARACTERISTICS The resistance of flow of Naval full bore valves is extremely low thanks to the excellent flow characteristics of the valve. Even at high flow speeds there is no cavitation. The valve is constructed to withstand stresses of 300 N/mm2 in district heating networks. The valve needs no servicing - no adjustment or lubrication - and is easy to install, giving a 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 180 degrees. Heavy and unreliable cast components are not used in the construction of the valve body. It is easy to retrofit actuating equipment.

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NAVAL Full Bore Valves KV-Values Technical Brochure

NAVAL Full Bore Valves KV-Values technical brochure

NAVAL Full Bore Valve User Instructions (IOM)

NAVAL Full Bore Valve User Instructions: Installation, Operation and Maintenance Manual (IOM)

NAVAL Full Bore Ball Valves Pressure Loss Diagram

NAVAL Full Bore Ball Valve pressure loss diagram

NAVAL Full Bore Valve Pressure/ Temperature Curves

NAVAL Full Bore Valve Pressure/ Temperature curves: Pressure resistance as a function of temperature

NAVAL Full Bore Valve Brochure

NAVAL Full Bore Valve Brochure

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