The REXI-HC Series is a direct-acting pressure regulator with a balanced plug. REXI-HC/D series pressure regulators are direct-acting devices controlled by a diaphragm and counter spring, for low, medium and high-pressure applications. They are suitable for non-corrosive gases. The balanced plug design provides a high flow rate coefficient, high accuracy even at maximum flow rates, a narrow lock-up zone and relatively low lock-up pressure, no internal leakage at zero flow rate and reduced response times.
The constancy of the regulated pressure and its accuracy, even with significant changes in upstream pressure and/or flow rate, make the REXI-HC Series regulator especially suitable for gas distribution networks in civil and industrial plants. The basic version of the REXI-HC Series regulator is made according to European Standard EN 334 as a fail-to-open regulator.
The REXI-HC Series can be equipped with an incorporated relief valve that discharges gas into the atmosphere when the regulator outlet pressure exceeds the set value. When the outlet pressure returns below the set value, the relief valve closes again.
The MONITOR is a safety accessory that performs the functions of the service regulator when the main regulator fails. This regulator valve is usually fully open during normal operation of the service regulator. The MONITOR is an emergency pressure regulator usually installed upstream, in the direction of gas flow, of another pressure regulator performing the service function.
