Our RZN and RZI check valves offer proven pump protection for applications with liquid media. The individually adjustable damping system enables the butterfly valve to perform shock-free checking, even in critical areas.
Our RZN and RZI butterfly valves feature first-class hydrodynamic characteristics, low pressure losses and the individually adaptable damping system. The closing characteristics of the butterfly valve can be optimally adjusted to suit the needs of each system with the help of the damping system. The RZN and RZI models can also be simply readjusted to adapt to new requirements if changes are made to the system at any point in the future.
Complete pump protection
Controlled, shock-free closing
Low pressure loss
Individually adjustable damping system
Automatic mode of action
Additional screw retention
Subsequent installation of counterweight possible
RZN: DN 150 / 6 inches up to DN 1000 m / 40 inches
–50 °C / –58 °F up to 200 °C / 392 °F
Construction lengths in accordance with
ISO 5752 BS 14 (F4)
Custom-made construction lengths on request
Valves designed in accordance with international standards, e. g
AD technical instructions, ANSI, API, ASME, ATEX, BS, DGRL, DIN EN / ISO, GOST, KTA, MSS, RCC-M
Automatically closing and adjustable hydraulically damped
The RZN and RZI check valves are ideally suited for protecting pumps for liquid media. The high flexibility of material and seal models enables the valves to be used in
a wide variety of applications. For example, a seawater model is available in stainless steel and with a hard rubber lining.
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