Description

Patented direct reading flowmeter placed in a calibrated diaphragm designed for applications in firefighting pressurization groups, compliant to standard EN 12845 for great water flows. The flow indication is shown directly on the flowmeter placed in junction with the main flow line.

Working Principle

The flowmeter uses the principle of the flanged calibrated diaphragm. It consists of a conic pipe, directly connected to the main flange. Inside the pipe there’s a float free to move vertically. According to the Bernoulli theorem the flange causes a pressure drop, depending on the water speed, that causes the movement of the float inside the graduated pipe indicating Typical firefighting apllication the flow.

Technical Data

• Max. pressure: 16 bar
• Max. temperature: 100°C
• Length of reading scale: ~ 200mm • Measurement range: ~ 1:10
• Guided float
• Suitable for insertion in flanges: UNI PN10/16; ANSI 150
• Accuracy ± 5 % F.S.
• The lateral buttonholes allow the spin of the glass tube, therefore one visibility of 360° of the graduate scale for both vertical or horizontal position
• The flange can be mounted in 4 different positions

Materials

• Body flange : PA6V5010 up tp DN100, Painted C. Steel over DN100
• Flowmeter body : PA6V5010
• Diaphragm : AISI 316
• Float : AISI 316
• Gasket : NBR
• Measuring pipe : Policarbonate