• Pressure maintaining devices perform three important functions:
• Maintaining the pressure at each point in the system within permissible limits.
• This means both protecting against exceeding the maximum permissible operating pressure and against falling below the minimum pressure, in order to avoid vacuum, cavitation and evaporation.
• Compensating for changes in the volume of water in the system caused by temperature changes.
• Compensating water losses resulting from system operation in the form of an adequate water supply.
• Refix DD expansion vessels are used in domestic water, pressure boosting and water heating installations according to DIN 1988.
• In combination with a water heater, it saves water.
• The flow-through vessel is equipped with a stainless steel connection, thus meeting the particularly high hygiene requirements of DIN 1988.
• The required T-piece is included in the scope of delivery; the Flowjet flow-through fitting is optionally available.
• Characteristics:
• • stainless steel connection,
• • flow-through, with High-Flow flow guide,
• • non-replaceable bag membrane in accordance with PN-EN 13831, DIN 4807 part
• 5, KTW-C and W 270,
• • approval in accordance with the
• pressure equipment directive 2014/68/EU,
• • possibility of installing Flowjet flow fittings,
• • has a PZH certificate,
• • Refix DD 33 vessel with mounting brackets,
• • intended for installation directly on the cold water pipeline only.
No-delivery refund
