The Berluto DRV 550 is a flanged direct-acting pressure reducer with diaphragm, adjustment spring, single seat with inlet pressure compensation, and cartridge-type internal components. It is designed for low downstream pressure of 0.2–2 bar, without external energy or pulse line.
The body is made of red bronze CC499K. In the basic version, the cap is PA6 up to DN32 and cast iron from DN40. Wetted parts are Hostaform C and brass up to DN32, and brass from DN40. Seals are NBR up to 100°C, with EPDM options up to 130°C and FPM up to 190°C for specific sizes. The HT version uses FPM and metallic internal parts up to 190°C, but is not suitable for steam.
Suitable for water and neutral, non-sticky liquids. Can also be used in air or neutral gases when higher flow rates are required. For potable or seawater, consider special DRV-6 or DRV-SW series.
The DRV 550 is selected when the required outlet pressure is below 2 bar, e.g., in industrial water, neutral process liquids, low-pressure equipment supply, and auxiliary networks. Sizing requires p1, p2, flow rate, DN, Kvs, temperature, medium, and sealing material. The technical datasheet mentions PED 2014/68/EU and classification body options DNV GL, ABS, LR, CCS, and BV.
DRV 550
Pressure reducing valves of the series are diaphragm-controlled, spring-loaded pressure reducing valves and have inlet pressure compensation. The cartridge design allows easy replacement of the internal parts.
Nominal size DN 15 up to DN 80
Inlet pressure up to 16 bar
Outlet pressure from 0.2 up to 2 bar
Temperature range -30°C to 190°C
Technical data
CE-certification according to the European Pressure Equipment Directive is mandatory for numerous products and delivery areas. Other certificates, however, are certificates of individual quality, such as DVGW and DIN EN ISO 9001, which stands for the internal quality management system with its extensive functional and performance checks. The particularly strict regulations of the national rules and regulations guarantee the highest possible safety - especially when it comes to the reliability in your plant.
