Zenit GRBLUEP200/2/G40HTEX Cast Iron Three-Phase Grinder Pump for Civil Wastewater with Open Channel Impeller

Optimized for the management and disposal of soiled civil wastewater in large residential or commercial collection pits, this heavy-duty three-phase unit provides a professional sewage disposal solution. It is suitable for installation in IECEx Zone 2 hazardous areas requiring certified equipment and handles civil wastewater containing fibres or filaments. The pump is engineered to cut fibrous solids before transfer to ensure reliable discharge.

Hydraulic performance provides exceptional vertical lift, as the unit delivers a maximum head of up to 27 m and a flow rate of up to 300 L/Min. Driven by a robust 1.5 kW motor configured for 415v three-phase power systems, it offers the efficiency required for professional installations. This model includes thermal protection and relays for reliable operation across demanding discharge conditions.

The unit features an open channel impeller integrated with a high-performance grinder system designed to cut fibrous materials and organic solids before they enter the hydraulic passage. This synergy ensures that processed solids are transferred efficiently and helps reduce the risk of blockages in the casing. The grinder system works in tandem with the open channel impeller to maintain efficient wastewater transfer even with heavily soiled civil wastewater.

Mechanical design involves a durable cast iron EN-GJL 250 body and a high-strength AISI 431 stainless steel shaft, ensuring long-term reliability in submerged wet installations. Motor protection includes thermal protection and relays, while two silicon carbide (2SiC) mechanical seals protect the motor against liquid ingress. The entire assembly is coated with a thick 120 µm bi-epoxy layer to resist corrosion and chemical attack in wastewater sumps.

FEATURES

• Certified IECEx Zone 2 construction (Ex nA nC IIC T3 Gc) permits safe use in environments requiring certified hazardous area equipment.
• Industrial-grade grinder mechanism with chromium steel cutters macerates civil sewage solids and filaments to reduce clogs.
• Professional dual-seal isolation featuring two silicon carbide (2SiC) seals protects the 1.5 kW three-phase motor.
• Robust EN-GJL 250 cast iron casing and EN-GJS 600 foot base provide mechanical stability for large civil wastewater pits.
• High-torque 415v three-phase motor configuration offers efficiency and starting torque for demanding duties.
• Thermal protection and relays safeguard the motor from electrical damage during heavy duty cycles.
• Stainless steel AISI 431 shaft ensures precise alignment and resistance to mechanical stress for the rotating assembly.
• Protective 120 µm bi-epoxy coating shields all cast iron surfaces from corrosion and chemical attack in civil wastewater.