PTFE FEP PFA lined worm wheel driven plug valve

XS343F46 worm gear lined fluorine flange plug valve

XS343F46 adopts flange connection, lining plug structure and worm gear operating mechanism. The series has a diameter range of DN50-DN500 and a pressure of PN16/Class150. The valve body material option is WCB or 304 (CF8). Worm gear mechanism is used for deceleration transmission and reducing manual operating force under high operating torque.

What lining material does F46 correspond to?

The F46 in the model corresponds to FEP named after engineering materials, not PTFE. PTFE usually corresponds to F4, while PFA is another independent fluorinated polymer. If the actual order chooses PFA or PTFE, it should be clearly stated in the product model, material list, and technical agreement, and the three materials cannot be written with the same name.

How to determine the suitability of the medium for fluoropolymer-lined plug valves?

The specific lining material should be checked based on the medium name, concentration, temperature, pressure, and permeability. FEP, PFA, and PTFE cannot be deduced as applicable to all acids, bases, solvents, or special chemical media solely based on the word "corrosion resistance".

What needs to be confirmed for worm gear operation?

The gearbox of XS343F46 worm gear lined fluorine plug valve should be selected based on the actual operating torque, required angle, and transmission mechanism efficiency of the valve under working pressure difference, and the valve stem connection, handwheel position, and installation space should be checked. The operating resistance of different diameters, linings and sealing structures is different, and the transmission ratio and output torque need to match the corresponding valve configuration.

The difference in lining materials can be found inPFA, FEP, and PTFE Material Selection InstructionsFor more plug valves, please refer toPlug valve manufacturer and selection。

Frequently Asked Questions

Is F46 in XS343F46 the same as PTFE?

No. F46 corresponds to FEP, and PTFE usually corresponds to F4.

How to specify the actual lining material supplied when ordering XS343F46?

The valve body, lining layer, and other liquid receiving parts materials should be separately specified in the technical conditions, and the corresponding model suffix and material certification should be checked. FEP, PFA, and PTFE are not the same material and cannot be ordered based solely on the parallel names in the title.

Can XS343F46 be used directly by pressing Class600?

No. PN16 and Class150 are the stated options. Other pressure classes require a corresponding valve design and pressure–temperature rating.