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Gravel pump
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Introduction and Application of G Series Gravel Pumps
G (or GH) type gravel pumps are mainly used for the continuous conveying of highly abrasive materials with particles too large for ordinary slurry pumps. They are suitable for dredging operations, river dredging, mining, and conveying blast slag in metal smelting, etc. The GH type is a high-head gravel pump.
This pump adopts a single pump casing structure with a cartridge connection, and has a wide flow passage. The flow components use wear-resistant materials such as hard nickel and high chromium. The pump discharge port can be positioned at any angle within 360°, offering convenient installation and use, good cavitation performance, and abrasion resistance.
Complete Model List of G Series Gravel Pumps
Complete Model List of Gravel Pumps: 6/4D-G, 8/6E-G, 10/8F-G, 10/8S-GH, 10/8FF-GH, 12/10G-G, 14/12G-G.
Meaning of G Series Gravel Pump Model Numbers
Meaning of Gravel Pump Model Numbers: 6/4D-G. Represents 6-inch inlet, 4-inch outlet, D bracket, G gravel pump.
G Series Gravel Pump Drive Methods
CRZ, CV, DCZ, ZVZ
G Series Gravel Pump Sealing Methods
Sealing methods include: packing seal, pressure relief cover-impeller seal, mechanical seal.
Packing seal is a common type of shaft seal, suitable for various operating conditions. It can be matched with special materials such as polytetrafluoroethylene packing and graphite packing, and can be used under corrosive or high-temperature conditions. It has the advantages of simple structure and convenient maintenance. However, shaft sealing water is required, and sufficient water pressure and flow rate must be ensured. The shaft sealing water pressure is the pump outlet pressure plus 35 kPa (0.35 kg/cm2), and the shaft sealing water flow rate depends on the size of the bracket; see the table below.
The impeller seal uses the pressure generated by the impeller and the series-connected auxiliary impeller for sealing. It is generally used in cases with pressurized feeding, but the feeding pressure should not exceed 10% of the pump outlet pressure. This type of seal does not require shaft sealing water (lubricating grease is added periodically through the oil cup on the pump body) and does not dilute the slurry; however, it will increase power consumption (generally needs to increase the rated power by about 5%).
Gravel pumps can also use mechanical seals, which have better sealing performance, but are more expensive and require shaft sealing water as required.
G Series Gravel Pump Structural Diagram
G Series Gravel Pump Wear Parts
Wear parts of the G series gravel pump include: pump body, impeller, wear plate, shaft sleeve, packing gland, packing, and sealing ring gasket, etc.
G Series Gravel Pump Performance Parameters
Pump Model Permitted
Maximum Power
(kw)Clear Water Performance Flow Rate Q Head
H (m)Speed
n (r/min)Maximum Efficiency
(%)NPSH
(m)Impeller Diameter
(mm)m³/hour L/s 6/4D-G 60 36-250 10-70 5-52 600-1400 58 2.5-3.5 378 8/6E-G 120 126-576 35-160 6-45 800-1400 60 3-4.5 378 10/8S-GH 560 216-936 60-260 8-52 500-1000 65 3-7.5 533 10/8S-G 560 180-1440 50-400 24-30 500-950 72 2.5-5 711 12/10G-G 600 360-1440 100-400 10-60 400-850 65 1.5-4.5 667 12/10G-GH 1200 288-2808 80-780 16-80 350-700 73 2.0-10.0 950 14/12G-G 1200 576-3024 160-840 8-70 300-700 68 2.0-8.0 864 16/14G-G 600 720-3600 200-1000 18-44 300-500 70 3.0-9.0 1016 16/14TU-G 1200 324-3600 90-1000 26-70 300-500 72 3.0-6.0 1270 18/16TU-G 1200 720-4320 200-1200 12-48 250-500 72 3.0-6.0 1067
Product System
The company's industrial pump production base focuses on meeting the needs of various industrial scenarios. We are committed to creating products such as slurry pumps, desulfurization pumps, dredging pumps, submersible pumps, and chemical pumps. From the demand for high wear-resistant slurry pumps in large-scale mining, to the dependence on high-efficiency desulfurization pumps in power plant desulfurization, to the strict requirements for high corrosion-resistant chemical pumps in fine chemical processes, we can provide high-performance products that are suitable for all. These pumps are widely used in industries such as mining, power plant desulfurization, river sand mining, metallurgy and steel, chemical industry, etc.
The valve production base covers various categories such as ball valves, gate valves, butterfly valves, etc. With excellent quality and reliable performance, it is widely used in the fields of oil and gas transmission pipelines, urban water supply and drainage systems, etc., to ensure the safe and stable operation of various fluid transmission systems.
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E-Mail: info@hktpump.com
Tel.：+86-13323110006
WhatsApp：+86-13323110006
Add.：Yigu Information Industry Park, Xinzhaidian, Zhao County, Shijiazhuang, Hebei Province, China