Flow limitation valve MBV with DRV DN 80 PN 25

1302080025 Flow limitation valve MBV with DRV DN 80 PN 25

1: Main valve
2: Ball valve (A, B, C)
3: Filter
4: Orifice
5: Throttle check valve
6: Control valve differential pressure measurement
7: Differential pressure orifice plate
8: Optical position indicator (optional: Electrical position indicator, opening limiter)
9: Control valve pressure reduction
10: Manometer with ball valve (A, B)
B: DN 40 to DN 150: 22 mmDN 200 to DN 250: 27 mmDN 300 to DN 400: 29 mm
X: 5 x DN line
Y: 3 x DN line

Product attributes

The main valve is a hydraulically operating diaphragm valve. The work energy is the inherent medium.
Most valve types operate purely hydraulically without any foreign energy.

To use in drinking water systems (other media after consultation)
Limitation of the inflow from a pressure zone into a lower pressure zone
Constantly maintaining a filter flow
The supply to a secondary network necessitates a limitation of the flow, so as to not endanger, for example, the extinguishing reservoir of the primary network (in combination with a reduction in pressure).

The flow–control valve completely hydraulically ensures a pre–determined maximum flow, irrespective of any changes in the operating pressure. The nominal flow rate can be progressively varied up to ±15% via the control valve. The inlet pressure is reduced to a constant outlet pressure downstream of the orifice plate.

To calculate the dimensions of the valve please refer to the following information:
Maximum and minimum inlet pressure (static and dynamic pressure ratios)
Required outlet pressure after the orifice plate
Required flow rate
Permissible loss of pressure incl. measuring orifice (usually 0.5 bar over the valve and orifice plate)
Available line diameters and lengths
Construction of the valve (straight or angle design)
For the calculation basis, information on the loss of pressure and the characteristic values of the valve, please refer to the end of Chapter E.

Design according to DIN EN 1074
Construction length acc. to DIN EN 558
Flange mass according to DIN 1092-2, to PN 25 DN 300
Pressure levels: PN 10 or PN 16 to DN 300, PN 25 to DN 200, higher pressures on request.
Nominal widths DN 50, DN 80, DN 100 and DN 150 available in angular design
Nominal widths 1 ½" and 2" with threaded connection (female thread)
Medium temperature up to 40°C

Shut–off valves should be fitted on both sides of the valve and a dirt trap should be installed on the inlet side of the valve. Depending on the installation situation, a mounting/dismounting adapter and an aeration and ventilation system should be provided.
The orifice plate must be installed after the valve. It is recommended that the following measurements are taken into consideration:
X = 5 x DN, distance between the valve and the orifice plate in a straight line
Y = 3 x DN, distance after the orifice plate and the shut–off component, in a straight line