East Dfmsd Single Imported Multi-Stage Centrifugal Pump

Note:
[1] For DFMSD medium - and low - pressure pumps and high - temperature pumps, the suction port pressure + maximum pump pressure ≤ 7 MPa.
For DFMSD medium - high - pressure pumps, abrasion - and corrosion - resistant pumps, and seawater pumps, the suction port pressure + maximum pump pressure ≤ 15 MPa.
[2] For DFMSD medium - and low - pressure pumps, the temperature ≤ 105°C; when the medium temperature ≥ 80°C, external cooling water must be connected for cooling.
For DFMSD high - temperature pumps, the temperature ≤ 160°C. External cooling water must be connected for cooling, and mechanical seal cooling flushing should be adopted.

Product Structural Features                  

• Impeller and Shaft Balance: Balanced according to ISO 1940 - 1 G2.5 grade, achieving smooth rotation with no vibration.
• Heavy - Duty Bearings: Can be equipped with self - aligning radial spherical bearings and axial thrust bearings. The heavy - duty radial spherical bearings can compensate for radial movement, and the thrust bearings can withstand axial force.
• Bearing Isolator: Prevents external contaminants from entering, significantly reducing the risk of bearing damage.
• Flange Connection: Meets GB/T 9124.1 standard for PN series flanges for suction and discharge. Other standard flanges can also be used.
• Single - Stage Cover Bolt Structure: The bolt layout is designed to minimize bending stress. High - strength bolts with fine - pitch threads are used. The pump cover and end cover can be easily removed.
• Equal - Load Design of Diaphragm Gasket: Balances radial force, reduces vibration, and lowers pump noise.
• Transition Flow Passage: Optimizes flow, minimizing friction loss and maximizing efficiency.
• Split - Middle Throttle Bush: Can withstand large axial and radial forces, simplifying rotor assembly and disassembly.
• Impeller Back - Pressure Device: Ensures balanced axial force. Different impeller vane numbers can balance radial force, reducing axial movement.
• Integrated Pressure - Equalizing Pipe: The balanced pressure - equalizing pipe makes the packing seal only bear inlet pressure.
• Sealing Gland: Meets GB/T 14624.9 standard for gland studs and nuts, ensuring reliable connection and easy disassembly and assembly.