The Berluto DRV 602 and DRV 608 are direct-acting pressure reducers featuring a diaphragm, adjustment spring, single seat, and inlet pressure compensation. Downstream pressure is mechanically adjusted without external energy or impulse line. This series accommodates larger DN compared to smaller flanged DRV series.
The body is made of red bronze CC499K and the spring cap of cast iron. Wetted parts are brass and stainless steel V4A. Standard version uses NBR up to 75°C, with EPDM available up to 130°C. A special version for seawater features materials resistant to this medium.
The series is applicable to water and neutral, non-sticky liquids. It can also be used for air and neutral gases when higher flow rates are required. For potable or seawater, special versions DRV-6 or DRV-SW should be considered. Documentation states these versions are not suitable for steam.
DRV 602 is selected for downstream pressure 1.5–6 bar. DRV 608 covers higher settings, 3–10 bar. Selection should be based on p1, p2, flow rate, Kvs, DN, PN flange, medium, temperature, and sealing material.
Installation position can be any, with a preference for vertical. Dual G 1/4” gauge connection is provided for outlet pressure indication. Technical data sheet mentions PED 2014/68/EU and available classification approvals DNV GL, ABS, LR, CCS, and BV.
DRV 602 / 608
Pressure reducing valves of the series are diaphragm-controlled, spring-loaded pressure reducing valves and have inlet pressure compensation. All sizes are available with flanges according to DIN, ANSI or JIS.
Nominal size DN 65 up to DN 150
Inlet pressure up to 16/ 25 bar
Outlet pressure from 1.5 up to 10 bar
Temperature range -30°C to 130°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.
