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NAVAL Hot Tapping Ball Valves DN20-200

NAVAL Hot tapping ball valve

NAVAL Hot Tapping Valves

The NAVAL Hot Tapping Valves are usable for non abrasive media. Like district heating, oil, and compressed-air.


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. The Teflon thrust washer between the stem shoulder and stemhousing also acts as a seal.
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.

Pressure - and temperature diagram


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. Heavy and unreliable cast components are not used in the construction of the valve body. It is easy to retrofit actuating equipment.

The NAVAL Hot Tapping System offers the following advantages:

  • fully welded ball valve with full bore
  • can be used also as a shut-off valve after hot tapping.
  • the hot tapping operation is safe, simple and easy

Product information

PDF Icon NAVAL Hot Tapping Valves DN20-200