
DBY metal electric diaphragm pumps are available in cast iron, aluminum alloy, PTFE coated and stainless steel. The DBY series electric diaphragm pumps use cycloidal gear reducers to transmit motion. Using a crankshaft and slider mechanism, they drive a double diaphragm that reciprocates, resulting in alternating changes in the volume of the working chamber and ensuring continuous inlet and outlet of fluid.
DBY metal electric diaphragm pumps are available in cast iron, aluminum alloy, PTFE coated and stainless steel. The DBY series electric diaphragm pumps use cycloidal gear reducers to transmit motion. Using a crankshaft and slider mechanism, they drive a double diaphragm that reciprocates, resulting in alternating changes in the volume of the working chamber and ensuring continuous inlet and outlet of fluid. At the same time, recent breakthroughs in diaphragm materials have significantly extended pump life, making it possible to increasingly replace centrifugal and progressive cavity pumps in the petrochemical, ceramics, metals and related industries.
Cast Iron: Excellent wear resistance, suitable for non-corrosive liquids such as clean water, waste water and sludge.
Aluminum alloy: Moderately corrosion resistant, not suitable for halogenated liquids. Ideal for conveying non-corrosive solids-free and good flowing liquids such as adhesives, waterborne coatings, oils and ceramic glazes.
Stainless Steel: Provides exceptional corrosion and wear resistance. Suitable for general corrosive acids, alkalis, solvents, pharmaceuticals (eg toluene), food and cosmetics.
PTFE coated: has outstanding acid and alkali resistance and excellent wear-resistant properties. Suitable for strong acids and alkalis, including sulfuric acid, hydrochloric acid, nitric acid, aqua regia and hydrofluoric acid.
PP - polypropylene, engineering plastic
PVDF - polyvinylidene fluoride
Fluoroelastomer, polytetrafluoroethylene (PTFE), nitrile rubber, santoprene, EPDM
1.Does not require refueling. Suction height up to 3 meters.
2.Large capacity with excellent passing characteristics, accepts particles up to 10mm in diameter. Minimal wear when pumping slurries or impurities.
3.This pump does not contain any rotating components or shaft seals. The membrane completely isolates the pumped medium from moving parts and operating components, preventing external leakage. Thus, when working with toxic, volatile or corrosive media, it prevents environmental pollution and ensures personnel safety.
4. Capable of transporting relatively viscous liquids (viscosity below 10,000 cP).
5.This pump does not require oil lubrication; Even running dry does not cause any damage to the pump, which is an important advantage.
| Model
| Maximum flow L/min | Maximum head m | Maximum suction lift m | export pressure kg | caliber DN | Maximum particle diameter mm | Engine power Kw |
| DBY-15/20 | 16 | 30 | 3 | 3 | 15/20 | 1 | 0.75 |
| DBY-25 | 58 | 30 | 3 | 3 | 25 | 2.5 | 1.5 |
| DBY-40 | 75 | 30 | 3 | 3 | 40 | 2.5 | 1.5 |
| DBY-50 | 108 | 30 | 3 | 3 | 50 | 4.8 | 2.2 |
| DBY-65 | 133 | 30 | 3 | 3 | 65 | 4.8 | 2.2 |
| DBY-80 | 266 | 30 | 4 | 3 | 80 | 6.4 | 5.5 |
| DBY-100 | 333 | 30 | 4 | 3 | 100 | 6.4 | 5.5 |