Berluto · Pressure Regulators
Berluto DRV 872 / 878 wide-range pressure reducing valve, flanged, stainless steel
Wide-range diaphragm pressure reducing valve in stainless steel 1.4408 with flanges DN 15 to DN 100, inlet up to 40 bar, outlet 0.5 to 4 bar (872) or 0.5 to 9 bar (878), for aggressive liquids, air and neutral gases.
The DRV 872 / 878 is the wide-range version of Berluto’s stainless steel flanged reducer, DN 15 to DN 100. A larger diaphragm and softer springs allow outlet pressures from 0.5 bar with up to 40 bar inlet: the 872 covers 0.5 to 4 bar, the 878 0.5 to 9 bar. Body, strainer and cartridge are shared with the DRV 802 / 808.
Flange rating and inlet pressure step down with size: PN 40 and 40 bar up to DN 50, PN 25 for DN 65 and DN 80, PN 16 or PN 25 for DN 100. Kvs values run from 2.9 to 39 m³/h. Body and bonnet are stainless steel 1.4408 with 1.4404 inner parts; NBR, EPDM (also with FDA conformity) or FKM seals cover −30 °C to +190 °C. Gauge ports G 1/4” sit on both sides.
The threaded counterpart is the DRV 772 / 778.
Selection data we need
Medium and temperature, minimum and maximum inlet pressure, required outlet pressure, flow rate or Kvs, nominal size and flange standard, seal material or FDA requirement.
Applications
- Low outlet pressures from a high supply pressure
- Aggressive water and other aggressive liquids
- Compressed air and neutral gases at higher flow rates
- Flanged process and utility lines up to DN 100
