Strainers | ARI

ARI Line Filters

ARI line filters are specified for the retention of solid particles in steam, water, condensate, and various industrial fluids. Typical installation points include upstream of control valves, steam traps, heat exchangers, pumps, and instrumentation. Selection is based on nominal diameter (DN), pressure class (PN), body material, temperature rating, allowable pressure drop, and required mesh opening.

Variants

• Y-pattern, flanged: EN-JL1040, EN-JS1049, 1.0619+N; DN15–DN300; PN6 to PN40.
• Straight-through, flanged: For high flow rates; DN250–DN500; EN-JS1049 or 1.0619+N.
• Stainless steel 1.4408: Y-pattern; DN15–DN200; PN16/25/40.
• Butt weld ends: Cast steel 1.0619+N; DN15–DN300; PN40; DIN EN 12627 compliant.

Technical Selection Criteria

Mesh and support baskets are stainless steel. From DN50, a reinforcement ring is included; from DN150, a support basket is standard. For DN>125, differential pressure due to clogging must be evaluated. Standard mesh sizes: 1–3 mm; fine mesh: 0.25–0.8 mm. Kvs values depend on DN and effective mesh area.

Pressure, Temperature, Sealing

Available in PN6, PN16, PN25, and PN40. Pressure limits decrease with temperature and must be checked per material: EN-JL1040, EN-JS1049, 1.0619+N, or 1.4408. 1.0619+N steel versions rated up to 450°C; 1.4408 stainless up to 400°C (see pressure-temperature tables). Cover sealing is by pure graphite gasket, optionally CrNi/graphite reinforced.

Standards and Installation

Flanges per DIN EN 1092-1/-2; face-to-face lengths per DIN EN 558. Welded ends per DIN EN 12982 and DIN EN 12627. PED 2014/68/EU, EN ISO 15848-1 / TA-Luft, and TÜV Test No. TA 09 2016 C04 apply. Installation requires checking flow direction, pipe cleanliness, flange alignment, and clearance for mesh removal.

Maintenance

Cleaning frequency depends on network contamination. Before reassembly, sealing surfaces must be cleaned and a new gasket fitted. In pump suction lines, clogged mesh can cause cavitation.

FAQ

Are actuators required?
No. These are passive line filters; no actuator is used.

When is stainless steel specified?
For media or environments requiring compatibility with 1.4408/1.4571.

When is straight-through preferred?
For large diameters and high flow rates, where mesh access and hydraulic behavior must be evaluated at the network level.