3" Semi-Automatic T Disc Filter – 120 Mesh, 110 GPM, 3" MNPT

RKD-340NSA – 3" Semi-Automatic Disc Filter for High-Flow Commercial Irrigation

The RKD-340NSA is a 3" semi-automatic T disc filter built for commercial irrigation systems where filter maintenance must be performed without interrupting water delivery. Designed with in-service flushing capability, it requires only 30 PSI minimum flushing pressure and can be cleaned while the system operates at up to 110 GPM and 85 PSI. The larger 3" connection accommodates higher-capacity mainlines where a 2" filter would create unacceptable pressure loss.

Key Features and Benefits

• In-service flushing — system remains fully operational during cleaning cycles, eliminating the need for scheduled shutdowns to maintain filtration performance
• 30 PSI minimum flushing pressure — low threshold ensures the filter can be flushed under normal operating conditions on most agricultural systems
• 3" MNPT connection — reduces pressure loss on high-flow mainlines compared to using a 2" filter with reducers, important for maintaining downstream operating pressure
• 110 GPM flow capacity — serves large agricultural zones and high-volume irrigation stations at a single filtration point
• 85 PSI working pressure — compatible with standard commercial pump and distribution system pressures
• Glass-reinforced polypropylene body — chemically resistant construction for sustained outdoor field performance
• Polypropylene disc cartridge — 120-mesh stacked disc construction for standard drip-grade filtration without corrosion risk

Technical Specifications

Download Specification Sheet

Dimensions - Inches

Dimensions - Millimeters