DP
- Commodity name： DP
- 产品描述
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Applications and Installation
DP pumps are considered among the best deep-well pumps available. In fact, they consist of two pumps connected in series: a jet pump and a centrifugal pump. The jet pump is lowered into the well and connected to the body of the centrifugal pump via two pipelines. These pumps are suitable for pumping clean water and chemically non-corrosive fluids. They are highly reliable, cost-effective, and easy to operate, making them widely used in domestic applications. When paired with small- to medium-sized buffer tanks, they can automatically distribute water, forming an automatic pressurization system for water supply. Their most notable feature is their ability to deliver clean water from extremely deep wells. To ensure adequate backpressure, a foot valve equipped with a filter is always installed at the suction inlet.
The water pump should be installed in a covered area to protect it from the elements.
Work environment
Maximum ambient temperature: Not to exceed 40℃.
Applicable liquid temperature: between 40℃ and 80℃
Maximum working pressure: Up to 10 PaStructural features
Pump body: Cast iron
Motor housing: aluminum
Shaft: Stainless steel
Impeller: Brass/PPO optional
Motor: Enclosed, externally ventilated
Insulation class: B/F
Protection rating: IP44/IP54
Operating mode: S1
Mechanical Seal: Ceramic Talc/Metallized Carbon
Performance data
Technical Parameters
Model Single-phase motor n = 2850 rpm Traffic m 3/h 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 Maximum input power Maximum output power Current Maximum
TrafficMaximum
Head heightSelf-priming L/minute 0 5 10 15 20 25 30 35 40 kW kW HP A L/minute m m DP255 0.68 0.55 0.75 3.5 35 45 15 Head (m) 45 42 38 32 27 22 16 9 DP355 0.85 0.75 1 4 38 50 25 50 47 44 38 33 28 21 15 9 DP505B 1.75 1.1 1.5 8.5 40 85 30 60 80 72 64 54 45 35 25 12 
External dimensions and installation dimensions
Model Installation dimensions (mm)
Package dimensions and weight Inlet Outlet a b c d e f g h I A B H Kilogram 
DP255 1.25" 1" 395 188 89 90 181 140 95 45 196 410 200 220 16.5 DP355 1.25" 1" 395 188 89 90 181 140 95 45 196 410 200 220 17.6 DP505B 1.25" 1" 405 165 147 49.5 198 145 110 55 257 525 250 300 31.0
Product Inquiry
Sanhe Electrical Appliances (Fujian) Co., Ltd.
China Marketing Center
Nationwide toll-free hotline:400-877-1958
Contact phone number:15880128069
Fax: +86-593-6377899
Email:mddj1958@mddj.com
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