A valve for adjusting a fluid flow, said valve comprising:
- a valve body,
- a flow path extending through the valve body, the flow path having an inlet and an outlet located downstream of the inlet, wherein the flow path is configured to guide a flowing liquid from the inlet to the outlet,
- a flow adjustment arrangement located in the valve body between the inlet and the outlet, for adjusting the flow of liquid from the inlet to the outlet,
- wherein liquid upstream of said flow adjustment arrangement but downstream of said inlet has an upstream pressure, and liquid downstream of said flow adjustment arrangement but upstream of said outlet has a downstream pressure,
- a stationary differential pressure sensor configured to measure a pressure difference between said upstream pressure and said downstream pressure, wherein said stationary differential pressure sensor has a first pressure sensing area in fluid communication with a first measuring channel of the valve, and a second pressure sensing area in fluid communication with a second measuring channel of the valve, wherein the first pressure sensing area senses said upstream pressure and the second pressure sensing area senses said downstream pressure,
- a pair of pressure ports configured to receive connection of a non-stationary differential pressure sensor for measuring the pressure difference between said upstream pressure and said downstream pressure, wherein the pair of pressure ports comprises:
- a first pressure port for accessing the first measuring channel of the valve, the first measuring channel being in fluid communication with the flow path upstream of said flow adjustment arrangement but downstream of said inlet, and
- a second pressure port for accessing the second measuring channel of the valve, the second measuring channel being in fluid communication with the flow path downstream of said flow adjustment arrangement but upstream of said outlet,
- a first measuring nipple and a second measuring nipple, wherein said first pressure port and said first measuring channel are provided in said first measuring nipple, wherein said second pressure port and said second measuring channel are provided in said second measuring nipple, and
- wherein the stationary differential pressure sensor is interposed between the first measuring nipple and the second measuring nipple.