GEHO® DH Hydraulic Piston Pump (w/ Cone Valve)

About this product

GEHO® DH hydraulic positive displacement piston pumps contain actuated cone valves to pump paste, high-density slurries, mine backfill and sludges with solids up to 90%. Overview Weir’s GEHO® DH hydraulic piston pumps are designed to pump extremely viscous pastes and sludges including high-density slurries, mine backfill and sludges with solids up to 90%. Featuring cone valves, these high-density solids pumps are renowned for their high reliability, uninterrupted and trouble-free operation, and low operational costs. They are equipped with our GEHO® HTI (Hydraulic Twin Intelligent)-system for pulsation-free operation, preventing damage, excessive wear and noise. GEHO® DH hydraulic piston pumps offer the following benefits: • A reliable, efficient, full flow but compact design • Low stroke rates • Self-priming • No pulsation dampers required • Significant wear resistance, especially against corrosive slurries and pastes • They contain an automatic greasing system to ensure optimal pump performance. • The pump unit and Hydraulic Power Unit (HPU) are manufactured in the same workshop, ensuring the highest quality and availability of pump and HPU parts. • Low maintenance costs and long maintenance intervals For more information about our range of hydraulic positive displacement pumps, please get in touch with our team. Frequently Asked Questions What are the main benefits of piston pumps? The GEHO® DH hydraulic piston pump offers high reliability, low operational costs, wear resistance, self-priming, and pulsation-free operation, making it ideal for handling viscous and abrasive materials efficiently. What are the main wear parts in a hydraulic piston pump? For hydraulic piston pumps, the main wear parts include the cylinder liner, the piston seals and the cone valves and seats. How does the cone valve function in the GEHO® DH piston pump? The cone valve in the GEHO® hydraulic piston pump ensures reliable operation by preventing clogging and maintaining consistent flow, which is crucial for pumping high-density materials. What is a valve's lifetime in a GEHO® pump? It depends on the following factors: slurry properties, the pump speed and the operating pressure. Typically, the lifetime ranges from a few hundred hours (for slurries that are hot and corrosive or have a high content of coarse particles) up to a few thousand hours (for slurries containing very fine particles). How long does it take to replace the pump valves? In general, all of the pump valves can be changed within a few hours. Does Weir provide a warranty for GEHO® piston pumps service? Weir offers a wide range of service level agreements to ensure trouble-free operation at the lowest operating cost. What pump type should I use - a piston diaphragm or a hydraulic piston pump? In general, both pump types offer a very high reliability. Piston diaphragm pumps have a high energy efficiency due to the electric drive and can be used for low to medium viscous paste slurries with fine particles being pumped at higher pressure whereas hydraulic piston pumps are used for very high viscous paste with or without larger aggregate particles. How reliable is a piston pump? The optimised Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR) result in an unmatched availability of 98%. What's one disadvantage of a piston pump? With the reciprocating motion of the pistons, the change from a suction to a discharge stroke causes a pressure dip which, if un-dampened, causes a pressure surge similar to the water hammer effect. GEHO® DH pumps are equipped with the unique HTI (Hydraulic Twin Technology) for pulsation dampening. Features and benefits Reliable and Efficient Our innovative hydraulic piston pump technology is backed by continuous advanced research and in-house laboratory test facilities, resulting in superior efficiency, reliability and availability. These paste pumps provide extreme wear resistance, especially against corrosive slurries, and are equipped with a plc controller to ensure optimal pump performance. Powerful Hydraulic Piston Design Our range of GEHO® DH hydraulic piston pumps is designed for heavy-duty applications involving the transport of extremely viscous pastes and sludges. GEHO® hydraulic piston pumps set new standards in mine backfilling with high performance, compact design and innovative HTI control (Hydraulic Twin Intelligence), which ensures a constant pumping pressure, minimises downtime and increases process reliability. Improved Sustainability Due to high efficiencies, GEHO® DH paste pumps offer low energy consumption and a low carbon footprint, contributing to a more economical and environmentally sustainable operation. Long-term Partnerships At Weir, we've gained a worldwide reputation for consistently meeting customer requirements by providing dependable customer service and extended field support. Under flexible servicing agreements, we are able to provide tailored and comprehensive support to suit each customer's needs. We also ensure on-time delivery of genuine parts to help reduce operating costs. By aligning our objectives with those of our customers, we build long-term and mutually beneficial partnerships. Global and Local Customer Support All GEHO® hydraulic piston pumps are backed by our unrivalled Weir service centre network. No matter where you are in the world, we have a local after-sales service team on standby to ensure that your GEHO® pump is monitored, optimised and serviced no matter what. High Quality Wear Parts Weir’s GEHO® DH pumps are unique since both the pump unit and the Hydraulic Power Unit (HPU) are manufactured in the same OEM workshop. This ensures the highest quality replacement parts for your pump. Low Total Cost of Ownership Weir’s GEHO® DH paste pumps offer long maintenance intervals and low operating costs. Innovative design features ensure uninterrupted, trouble-free GEHO® piston pump operation, and reduced operating and maintenance costs compared to other available transportation systems. Why Weir? GEHO® pumps are considered to be the technological leaders in high-pressure, crankshaft-driven, piston diaphragm and hydraulically-driven piston pumps. These hydraulic positive displacement piston pumps operate in a wide variety of applications all over the world from mining and mineral processing to pipeline transportation industries. For more than 50 years we have specialised in the design and development of some of the world’s most advanced hydraulic piston pumps and continue to work closely with professionals within the industry to make slurry pipeline operations reliable and economical. We also pride ourselves on working closely with our customers and their wider teams to build long-term customer relationships. Our global team of experts are here to support you, every step of the way, wherever you may be. Applications GEHO® DH hydraulic piston pumps operate in a wide variety of applications all over the globe from mining and mineral processing to pipeline transportation industries. Featuring cone valves, these hydraulic positive displacement pumps are suitable for pumping paste with a maximum solids diameter of 60mm and slurries with a high solids concentration, particularly when binding agents are used to improve its structural strength. These paste pumps can be used for tailings disposal, backfill mines, industrial waste pumping, oil/tar pumping, sewage sludge disposal and high-pressure biomass conversion process feed. • Biomass Processes • Pumping - Backfill • Pumping - Paste • Pumping - Tailings Product specifications Replacement parts GEHO® spare parts are manufactured using quality materials and processes. Our range of GEHO® valves are reliable, long-lasting and designed to optimise the performance of your pump. For more information about replacement parts for your hydraulic piston pump, please contact our team. Services and maintenance Whether you’re in Alaska or Australia, we have a local after-sales service team on standby to ensure that your GEHO® hydraulic positive displacement piston pump is monitored, optimised and serviced no matter what. Our ongoing partnership with you includes: • Comprehensive support under flexible servicing agreements tailored to your unique needs • Installation and commissioning by highly qualified and dedicated service engineers • 24/7 on-site technical assistance to ensure optimised performance of your equipment and to minimise unplanned downtime • On-site training and workshop training available at our GEHO® pumps training academy for operators and maintenance professionals to improve general knowledge and equipment maintenance • Reliable and cost-effective repairs, overhauls and modifications • A guarantee to provide genuine spare parts manufactured using quality materials and processes to ensure that they are reliable and long-lasting, helping to optimise the performance of your pump • Partnership with world-wide experts in hydraulics to ensure the highest quality and availability of parts • Reliable and timely availability of our GEHO® spare parts from our manufacturing facility and regional distribution centers that cover every continent (or from an agreed consignment stock on-site) to help reduce your operating costs Once operational, every GEHO® pump installation is regularly visited by a Weir Account Manager. The purpose of these complementary visits is to review the performance of your GEHO® pump and provide recommendations to improve and optimise pump availability and performance.