IMPA: 752261

Butterfly Valve Wafer Type with Worm Gear Actuator DN650 (26")

This wafer type butterfly valve features a worm gear actuator for smooth, precise flow regulation in marine piping systems. The worm gear mechanism provides effortless manual operation, allowing for infinite adjustment of the disc position. Built with a compact, lightweight design, it is ideal for shipboard applications where space and weight are critical.

The valve body includes full-open and full-closed limit stop bolts to ensure accurate disc positioning, while the integrated position indicator on the gearbox allows visual confirmation of the opening angle. Operation is intuitive: clockwise to close, counterclockwise to open. Suitable for water, oil, and other fluids commonly found in marine, HVAC, and industrial pipelines. Each valve is individually tested for reliable sealing and long service life.

Key Features

Technical Specifications

SpecificationValue
Nominal SizeDN650 (26")
Disc Diameter (φd)634 mm
Flange Diameter (φD)708 mm
Face-to-Face (L)170 mm
Center to Top (H1)468 mm
Overall Height (H2)647 mm
F421 mm
W390 mm
Weight350 kg
TypeWafer with Worm Gear
OperationManual Hand Wheel

Frequently Asked Questions

What is the operating direction of the hand wheel?

Clockwise rotation closes the valve, counterclockwise opens it.

Is this valve suitable for seawater applications?

Yes, with appropriate material selection. The standard valve is suitable for fresh water, oil, and non-corrosive fluids. For seawater, please inquire about corrosion-resistant options.

What is the face-to-face dimension?

The face-to-face dimension (L) is 170 mm, conforming to wafer type standards.

Does the valve come with a position indicator?

Yes, the gearbox is equipped with a position indicator that shows the disc opening angle.

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