Electric three eccentric hard seal flange butterfly valve D943H-16C

D943H-16C electric three eccentric hard seal flange butterfly valve

D943H-16C adopts electric drive, flange connection, and triple eccentric structure. The current page has a diameter of DN50-DN1200, pressure of PN1.0-PN6.4MPa, and material fields including WCB, CF8, and hard alloy.

What is the function of a three eccentric structure?

The three eccentric geometry can distinguish the contact mode of the sealing pair during the opening and closing process from that of the centerline butterfly valve, which is beneficial for reducing some of the opening and closing friction. However, the actual torque, wear, sealing grade, and bi-directional sealing capability are still subject to product design and testing.

How to choose hard alloy seals?

It is necessary to confirm the sealing materials of the valve seat and butterfly plate based on the medium temperature, pressure difference, particles, and erosion situation. This page no longer uniformly states HRC58 or above, fixed 425℃, or absolutely no wear and tear.

Electric control

The actuator is configured based on the opening and closing torque, power supply, switch or adjustment requirements, valve position feedback, and environmental conditions.

For more hard seal products, please refer toSelection of hard sealed butterfly valve。

Frequently Asked Questions

What documents need to be confirmed when replacing the original electric triple eccentric butterfly valve with D943H?

Specific caliber, flange standard, structural length, sealing direction, valve seat material, and actuator control interface should be verified. The same three eccentric structure does not mean that all installation and control configurations can be directly interchanged.

Does triple eccentricity necessarily result in zero leakage in both directions?

It cannot be directly deduced, and the specific design and experimental results should prevail.

Is an electric triple eccentric butterfly valve suitable for precise adjustment?

Not necessarily, it is necessary to verify the characteristics of the butterfly plate, actuator, and control system.