How to confirm the selection parameters of electric butterfly valves? DN、PN、 Sealing and actuator configuration

What parameters need to be confirmed for the selection of electric butterfly valves? DN、PN、 Explain the seal and actuator in one go

2026-09-27 14:10:00

Before placing an order for an electric butterfly valve, at least explain the medium temperature and pressure, diameter, connection, sealing, and control methods. The valve body determines the applicable operating conditions, and the actuator determines how to act; Confirming the two parts separately makes it easier to compare the quotation.

Related product columns:Electric Valve Column　Butterfly valve column　

电动软密封蝶阀 — Electric soft seal butterfly valve

高温对夹蝶阀 — High temperature clamp butterfly valve

The relationship between structure and working conditions

The electric butterfly valve consists of a butterfly valve body and an electric actuator. The starting point for selection is not the actuator voltage, but the medium, temperature, diameter, pressure level, and maximum pressure difference; These conditions collectively determine the valve body material, valve seat, valve plate structure, and required output torque.

Conditions that need to be jointly confirmed when selecting

Soft seal configurations are commonly used for water, air, and compatible media with moderate temperatures, while hard seals or metal seal structures need to be evaluated based on temperature, pressure difference, seal rating, and operating conditions fluctuations. The connection forms such as clamps, flanges, and lugs should also match the pipeline flange standards and disassembly space.

Boundary between control and technical communication

The executing mechanism should clarify whether it is switch type or regulating type, power supply voltage, switch time, open/close feedback, protection level, and on-site control interface. When it comes to interlocking, the power-off status, manual operation requirements, and signal system should be written into the technical requirements, rather than being temporarily added later.

Conclusion

The product column of Fouten can be used for further comparison of structure and connection form. The actual project should still confirm the final configuration with complete process data, material list, and technical agreement.

Common customer questions

How to confirm the torque of electric butterfly valve?

It should be calculated or approved by the manufacturer based on the valve diameter, pressure difference, seat friction, medium conditions, and opening and closing frequency, and appropriate safety margin should be left.

Can soft sealed electric butterfly valves be used for high temperatures?

Based on the allowable temperature of the valve seat and the entire valve. It cannot be judged solely based on the metal material of the valve body, as the sealing material, medium, and pressure will also limit the usage boundary.

What feedback signals are required for electric butterfly valves?

Common requirements include fully open, fully closed, and fault signals; The regulating type also requires confirmation of control inputs and valve position feedback. The specific interface should be consistent with the control system.

Valve selection