Abstract: A check valve assembly comprising a main housing having a main fluid passage extending along a main flow axis between a first port connectable to a first pipe and a second port connectable to second pipe; a shut off element disposed at least in part within the main housing, said shut off element extending along a shut off element axis, and a check valve. The shut off element is displaceable between a working position in which the shut off element allows a fluid flow between the first port and the second port and through the check valve, and a service position blocking the fluid flow through the shut off element. A check valve receiving element is disposed at least in part within the main housing for removably accommodating the check valve in the check valve receiving element.

Abstract: The present invention proposes a balancing valve, a fluid network with such a balancing valve, and a method of maintaining such a balancing valve. The balancing valve comprises a housing having a main fluid passage extending along a main flow axis, a valve body disposed within the housing in the fluid passage, wherein the valve body has a first through hole forming a first fluid passage with a variable first fluid passage cross section. The valve body has a second through hole distinct from the first through hole and forming a second fluid passage in the valve body. The first fluid passage is a main fluid passage and the second fluid passage is a by-pass passage.

Abstract: The present invention proposes a balancing valve, a fluid network with such a balancing valve, and a method of maintaining such a balancing valve. The balancing valve comprises a housing having a main fluid passage extending along a main flow axis, a valve body disposed within the housing in the fluid passage, wherein the valve body has a first through hole forming a first fluid passage with a variable first fluid passage cross section. The valve body has a second through hole distinct from the first through hole and forming a second fluid passage in the valve body. The first fluid passage is a main fluid passage and the second fluid passage is a by-pass passage.