D341F46 cast steel worm gear double flange fluoropolymer-lined butterfly valve (PFA/FEP optional)

D341F46 worm gear lined fluorine double flange butterfly valve

D341F46 adopts worm gear transmission, double flange connection, and fluoropolymer-lined butterfly valve structure. The current page has a diameter of DN40-DN500, a pressure of PN16/Class150, a valve body field of WCB or 304, and lining fields of PFA and FEP.

What is the difference between double flange and clamp structure?

The double flange butterfly valve body itself has a flange end face, which is connected to the pipeline flange through bolts; The butterfly valve is clamped between the flanges on both sides. When selecting, it is necessary to check the connection size, structural length, and pipeline maintenance method.

What is the function of worm gear transmission?

The worm gear reduction mechanism is used to reduce manual operating force and control the rotation of the butterfly plate. The actual reduction ratio, handwheel size, and operating torque are determined based on the diameter, pressure difference, and sealing structure.

Current lining material

The parameter fields on this page clearly list PFA and FEP. Therefore, the current product text follows PFA/FEP for selection instructions and does not use PTFE as the default supply material.

For more fluoropolymer-lined valves, please refer toLining valve selectionOverview of Butterfly ValvesButterfly valve manufacturer and selection。

Frequently Asked Questions

Is D341F46 an electric butterfly valve?

No, this product uses manual worm gear transmission.

How to confirm whether the lining layer is PFA or FEP when D341F46 comes into contact with corrosive media?

The selection should be based on the medium and working temperature and pressure conditions, and the actual lining layer and other liquid receiving materials should be clearly stated on the order. PFA and FEP cannot be mixed as the same material, nor can they be replaced with PTFE without confirmation.

Can PN16 and Class150 flanges be directly interchangeable?

No, it is necessary to verify the flange size and pressure temperature rating according to the corresponding standards.