Blake Hydram Hydraulic Ram Pump
The Blake Hydram Hydraulic Ram Pump is used to lift water that is flowing down without external power.
The Blake Hydram is a hydraulic ram pump manufactured by Allspeeds in the UK. The Blake Hydram uses the force of the water flowing down the “drive pipe” to lift water to a maximum height above the Hydram of 150 meters without any external source of power. The pump can operate continuously for 24 hours a day, 7 days a week. Hydrams’ are available in a range of sizes from No.1 to No.8.
The manufacturer, Allspeeds, is based in Accrington, UK and distributes the product in Africa.
2189 – 7245 USD (1,745 – 5,775 GBP) Converted June 2020
Prices specified for models no.1 to no.4. Larger sizes are priced based on application.
This product targets suitable clean water, to provide supplies to remote houses or communities, allow irrigation of inaccessible areas and maintain feed water for stock in areas at a distance from water sources.
Each Blake Hydram is made to order by Allspeeds, taking approximately 12 weeks to produce.
The product can be ordered online or by contacting the customer service team at Allspeeds UK.
Description of the pump type
Power required, measured in watts
Manufacturer-specified discharge rate, measured at a specific head
Maximum depth of water the pump can pull
Piston nominal diameter, measured in centimeters
The Blake Hydram Ram Pump, at its optimum will pump 20% of the water that is available to it, to a maximum height of approximately 150 m. The product can operate 24/7 for many years. Operation requires a steady source of running water (drive water) at a minimum speed of 7 L/min for a minimum head of 1 m.
The performance of the Blake Hydram is determined by the supply head, delivery head and by the input flow. The table below specifies the output factor in L/day. For every L/min of water flowing into the Blake Hydram, the amount delivered will be this factor in lL/day. For example, for a fall of 6 m, a delivery head of 20 m and an input flow of 10 L/min, then the output flow will be 2820 L/day (282 x 10).
Blake Hydram is available in sizes No. 1- No.8. depending on the site requirements.
A video demonstrating the operation of the Blake Hydram is available here.
Full details are available in the Allspeeds Blake Hydram Product Information Sheet
Blake Hydram servicing can be performed by the individuals who installed the system. Troubleshooting procedures and additional support is provided by Allspeeds.
The product does not specify a design life. According to Allspeeds, some customers have had non-stop service from their hydram pump since the 1920’s and 30’s.
The manufacturer specifies the Blake Hydram, at optimal performance, will pump about 20% of the input water to a maximum height of approximately 150 m.
Other performance targets include: no running costs, no fuel or electricity, no pollution, operates 24 hours a day all year.
Testing performed by the China Institute of Water Resources and Hydropower Research determined when the delivery head is lower than 50 m, the efficiency of the Blake Hydram ranges between 55% and 65%.
The use of heavy wall steel tube for the drive pipe is highly recommended. Upon completion of the installation the operator must ensure the pump is firmly bolted to its concrete base and the drive pipes have been laid out evenly.
The Blake Hydram base, at a minimum a simple concrete slab <150 mm thick, provides a surface on which the hydram may be bolted and which absorbs the pulsations during operation. An enclosure for the Blake Hydram is also ideal as it protects the unit and prevents pollution.
Jeffery ,T.D., et al, 1992 Hydraulic Ram Pumps: A guide to ram pump water supply systems, Intermediate Technology Pubs, London.
Hussin, N. S. M., 2017, Design and analysis of hydraulic ram water pumping system, Journal of Physics: Conference Series, 908, pp. 8.
Asvapoositkul, W., et al., 2019, Determination of hydraulic ram pump performance: experimental results, Advances in Civil Engineering, pp. 11.
Guo, X., et al, 2018, Optimal design and performance analysis of hydraulic ram pump system, Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy, 232, pp. 841-855.
Allspeeds Ltd has been approved to ISO 9001: 2015 by Amtri Veritas Ltd.
The Quality Management System applies to: Design, manufacture, assembly, supply, servicing and repair of mechanical, batter-powered and hydraulic products.
The manufacturer evaluates the product based on supply head, input capacity, the desired delivery head and the desired litres per day as evaluation criteria.
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