Flow regulating manual valve - ASTRA | ARI

ARI-ASTRA® Flow Control Valve

The ARI-ASTRA® is a manually operated balancing/control valve for flow regulation, featuring a straight-through design with flanged connections PN16 according to DIN EN 1092-2. It is utilized in heating, cooling, and industrial water circuits where flow presetting, Δp measurement, and isolation capability are required. Available in sizes DN15–DN500, with Kvs values ranging from 4.5 to 3185 m³/h.

Technical Configuration

• Body made from EN-JL1040 / EN-GJL-250 for ASTRA, or EN-JS1049 / EN-GJS-400-18U-LT for ASTRA Plus.
• Soft seat PTFE for low leakage in water and hydraulic networks.
• Position indicator or digital display, travel limiter, and non-rising handwheel.
• Integrated G1/4" ports for differential pressure measurement and adjustment with ARImetec-DX.

Version Selection

The standard ASTRA DN15–200 operates from -10°C to +120°C, with short-term operation up to +130°C. For larger diameters DN250–500, the gland version reaches up to +200°C. The ASTRA Plus with spheroidal graphite iron and bellows sealing is selected when higher temperature or reduced stem emission is required, up to +350°C per configuration.

Installation and Maintenance

For stable flow measurement, a straight section of 6×DN before and 2×DN after the valve is required. Before commissioning, check material, pressure, temperature, and flow direction. Welding residues or contaminants in the pipeline can cause seat leakage or cone damage.

Standards / Compliance

The series is declared according to PED 2014/68/EU for PN16, with applicable DIN EN 12516 / DIN 3840 and AD 2000 A4. Flanges are according to EN 1092-2.