Waterworks Y-Type Filter GL41H-16Q DN150 PN16 Flanged Ductile Iron Strainer SS304 Screen

This DN150 (6") flanged Y-type strainer belongs to the GL41H-16Q ductile iron series, combining a high-strength QT450 body with an SS304 mesh filter element. Rated PN16 with German standard style flanged ends, it is widely used in municipal water supply, building services and industrial piping to protect downstream equipment from particulate damage.

• SS304 Stainless Steel Screen: The cylindrical filter element is made of SS304 stainless steel mesh, offering excellent corrosion resistance and a smooth surface that minimizes particle adhesion and pressure loss.
• PN16 Flanged Connection: Flanged end connections are drilled to ISO 7005-2 / DIN PN16 patterns for rapid installation into standard water pipelines with conventional gaskets and bolting.
• Y-Type Straight-Through Design: The compact Y-shaped body keeps the screen chamber at an angle to the flow direction, protecting downstream pumps, flow meters and valves from rust, sand and welding debris.
• Easy Maintenance Blow-Off: The bottom cover (blow-off cap) can be removed without dismantling the pipeline, allowing quick screen inspection, cleaning or replacement with minimal downtime.
• Source Factory Direct Supply: As a source factory with large finished-goods stock, we offer short delivery times, OEM marking, customized mesh sizes and responsive technical support.
• QT450 Ductile Iron Body: The strainer body and cover are cast from QT450-10 ductile iron, giving the unit high mechanical strength, good impact toughness and dependable pressure containment for PN16 water service.

Construction: The GL41H-16Q Y-type strainer consists of a ductile iron body with an angled branch chamber, a removable cover, and a cylindrical SS304 filter screen. Water entering the strainer passes through the screen from the inside out, while particles larger than the mesh opening are retained in the chamber and periodically removed through the cover. No moving parts are involved, which makes the strainer virtually maintenance free apart from regular screen cleaning.

Screen & Filtration: The SS304 screen is available in standard 20 mesh (about 0.85 mm opening) as well as 10, 40 and 60 mesh options, or perforated plate versions with 1.0 to 3.0 mm holes, to match different water qualities. The screen is supported by a rigid framework inside the body, and the drain plug on the cover allows the trapped debris to be flushed out during routine maintenance.

Applications: In wastewater treatment plants, fire protection systems and pumping stations, the Y-type strainer is mounted upstream of pumps, pressure reducing valves and flow meters, ensuring reliable long-term operation of sensitive equipment.

Packaging & Quality Assurance: Each strainer is hydrostatically shell tested at 1.5 times the rated pressure (2.4 MPa for PN16) before dispatch in line with GB/T 13927 and API 598 test requirements. Flange faces are protected with wooden covers and the body receives anti-rust primer with blue or black finishing paint. Small sizes are packed in cartons with foam inserts and palletized; larger diameters are secured in plywood wooden cases with internal foam supports, ready for sea freight. Our factory operates under ISO 9001 quality management and provides a 12-month warranty against manufacturing defects.

Customization: We accept OEM production with customer brand marking, customized paint color, alternative flange drilling standards (ANSI, DIN or GB), special mesh sizes and carbon steel or 316 stainless steel screens. Please advise your nominal diameter, required mesh, quantity and application when inquiring so we can offer the most suitable configuration.