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High-head blackwater and sewage extraction in civil, residential, and industrial applications requires pumps with significant pressure capability and effective solids grinding. The Zenit GRG 550/2/G50H D0FT5 is a 4.0 kW submersible grinder pump with ATEX Zone 1 certification, featuring a robust cast iron construction designed for maximum reliability with a built-in high-head grinder system. The unit is suitable for livestock farm effluents, carparks, and explosive atmosphere environments.
Maximum head for this model is 42.5 metres with a maximum flow of 270 L/Min, driven by a 415V three-phase motor drawing 7.7 Amps. The 4.0 kW motor uses direct starting with 54.1 Amps starting current and produces 13.3 Nm of rated torque. These performance characteristics suit high-head applications requiring significant pressure capability for long-distance transfer or high elevation pumping.
Hydraulic design incorporates a multi-channel open impeller with grinder system, with the impeller manufactured from Cast Iron EN-GJL 250. The grinder mechanism uses chromium steel cutter and cutting disk (X102 CrMo17 KU) that process all solids and fibrous materials. Free passage is 0 mm as all solids are reduced by the grinding system. Hydraulic efficiency is rated at 43.4%.
Construction features a Cast Iron EN-GJL 250 casing with bi-epoxy 200 ?m sea water resistant coating. The shaft is stainless steel AISI 431, and sealing uses two mechanical seals in silicon carbide (2SiC). Motor protection includes Class H insulation, IP68 rating, thermal protection, and a leakage sensor. Cable length is 10 metres with 4G1,5+3x1 configuration, and the unit weighs 57.6 kg. A ZENS9024.006 Ring Stand is required for free-standing operation.
FEATURES
- Multi-channel open impeller with grinder system for solids reduction
- Chromium steel cutter and cutting disk X102 CrMo17 KU
- Double silicon carbide mechanical seals for reliable containment
- Stainless steel AISI 431 shaft for corrosion resistance
- Bi-epoxy 200 ?m sea water resistant coating
- Hydraulic efficiency of 43.4%
- Direct starting with 54.1 Amps starting current
- Requires ZENS9024.006 Ring Stand for free-standing installation
FAQs
General Product FAQs
1. How do I choose the right pump for my setup?
Selecting the correct pump depends on your required flow (L/min), total head (vertical lift + friction loss), and power source. If you're unsure, contact our team and we’ll size the right system for you.
2. Do you offer support with system design or setup?
Yes — we provide expert advice to help you choose, install, and optimise your pump system. Whether it's a simple setup or a custom solution, we’re here to help.
3. Do you offer complete pump solutions or just products?
We don’t just sell pumps — we provide complete solutions. From accessories and control systems to full packaged setups, we can supply everything required to get your system running efficiently.
Shipping & Availability
1. Do you offer Australia-wide shipping?
Yes — we ship across Australia. Bulk or oversized orders may incur additional freight charges otherwise we offer free shipping over $100*
2. How long does delivery take?
Orders are typically shipped within 1–2 business days, with delivery taking approximately 2–7 days depending on your location.
3. What courier or freight companies do you use?
We work with a range of trusted carriers including Australia Post, StarTrack, TNT, and other national freight providers depending on the size and location of your order. This allows us to ensure fast, reliable delivery across Australia, including regional and remote areas.
Warranty & Support
1. Do your pumps come with a warranty?
Yes — all products are backed by manufacturer warranties. Warranty periods vary depending on the brand and product type.
2. What support do you offer after purchase?
We provide ongoing support including:
- Installation advice
- Troubleshooting
- Spare parts supply
- System upgrades
3. What is the warranty process if something goes wrong?
If you experience an issue, simply contact our team with your order details and a description of the problem. We’ll guide you through troubleshooting and, if required, arrange repair, replacement, or manufacturer assessment in line with warranty terms.
Why choose Foundation Pumps?
1. Why choose Foundation Pumps over other suppliers?
We focus on supplying proven, high-quality pump solutions backed by real industry knowledge. Unlike general resellers, we understand how these systems perform in the field and provide honest, practical advice to ensure you get the right solution the first time.
2. Do you offer expert advice before and after purchase?
Yes — we support you at every stage, from selecting the right pump through to installation and ongoing use. Our team is available to assist with sizing, troubleshooting, and system optimisation whenever you need it.
3. Do you stock trusted brands and quality products?
We carefully select and supply pumps from reputable manufacturers known for reliability and performance. Our range includes both industry-leading brands and high-value alternatives that meet Australian standards and conditions.
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