Optimization of Pressure Loss in Duplex Strainers: Flow Rate Comparison between C84400 Bronze Strainer Screens And S32760 Stainless Steel

I. STRUCTURE AND WORKING PRINCIPLE OF DUPLEX STRAINERS
The duplex strainer consists of two single-cylinder strainers connected in parallel and operates alternately through a switching valve. This design allows for the replacement of STRAINER cartridges without shutting down the equipment, ensuring the continuity of the filtration process. Its internal structure is optimized to reduce the resistance of fluid within the STRAINER, thereby lowering the pressure loss.

II. COMPARISON OF THE CHARACTERISTICS OF C84400 BRONZE STRAINER SCREENS AND S32760 STAINLESS STEEL STRAINER SCREENS
(1) C84400 Bronze strainer Screen
C84400 bronze is a high-lead tin bronze with good wear resistance and corrosion resistance. Its chemical composition enables it to perform well when dealing with weakly corrosive media. However, the relatively high density of bronze may lead to an increase in pressure loss under high flow rates.
(2) S32760 Stainless Steel strainer Screen
S32760 is a super duplex stainless steel with high strength and excellent corrosion resistance. Its duplex structure makes it perform well in chloride environments while maintaining good processing properties. The density of S32760 stainless steel is relatively low, and its smooth surface can effectively reduce the resistance of fluid.

III. COMPARISON OF FLOW RATE AND PRESSURE LOSS
The following is the comparison of flow rate and pressure loss between the C84400 bronze strainer screen and the S32760 stainless steel strainer screen in the duplex strainer:

(1) Flow Rate Performance

Under the same flow rate conditions, the S32760 stainless steel strainer screen can provide lower pressure loss due to its lower density and smooth surface. In contrast, the C84400 BRONZE STRAINER screen may lead to an increase in pressure loss under high flow rates.
(2) Optimization of Pressure Loss
The optimization of pressure loss depends not only on the material of the strainer screen but also on the pore size of the strainer screen, the strainering area, and the viscosity of the fluid. The S32760 stainless steel STRAINER screen can effectively reduce the resistance of fluid and thus reduce pressure loss due to its good surface characteristics.

IV. APPLICATION SCENARIOS AND SELECTION RECOMMENDATIONS
(1) C84400 Bronze strainer Screen
It is suitable for handling weakly corrosive media, such as water and oil products. Its wear resistance makes it perform well in scenarios where STRAINER cartridges need to be replaced frequently.
(2) S32760 Stainless Steel strainer Screen
It is suitable for strongly corrosive environments, such as marine engineering and the chemical industry. Its low pressure loss and high filtration accuracy make it an ideal choice for high-flow applications.

V. CONCLUSION
In the duplex STRAINER, choosing the appropriate strainer screen material is crucial for optimizing the flow rate and reducing pressure loss. The C84400 BRONZE STRAINER screen is suitable for weakly corrosive media, while the S32760 stainless steel strainer screen performs excellently in strongly corrosive environments. By comparing the characteristics of the two, users can select the most suitable strainer screen material according to specific application requirements to achieve the best filtration effect and system efficiency.