Vacuum MF Flange (SUS304)

Model: PVF-16

PVF-16 is a SUS304 flange used for connecting ISO-MF standard vacuum piping. With global standard dimensions providing good compatibility with general vacuum components, it is used for medium-vacuum and high-vacuum piping connections in semiconductor, display, solar, and laboratory processes.

Features

• Precision-machined design ensures perfect tightness with no leakage
• Manufactured to global standard (ISO-MF) for stable compatibility with standard vacuum components
• Versatile use from semiconductor and display equipment to research vacuum chambers
• Multi-clamp fastening structure provides safe and secure pipe-end termination

Specifications

Frequently Asked Questions

How does MF (Movable Flange) differ from a fixed flange?

MF is a movable flange that can rotate freely on the outer circumference of the pipe, making it easy to align bolt-hole positions during installation, advantageous for assembly with already-fixed flanges. A fixed flange is welded integrally with the pipe, so the bolt-hole position is fixed; in cases where it is hard to rotate to align during installation, using MF on one side makes assembly far easier.

How are ISO-K, ISO-F, and MF related?

ISO-K is a method where both sides have smooth flange faces fastened with external clamps, while ISO-F is a bolt-fastening method. MF is a movable flange used on one side in the ISO-F system, mainly used to make bolt-hole alignment easier at pipe ends. Combinations of fixed and MF flanges are common.

Up to what vacuum level can it be used?

The ISO-MF flange system is standardly used from medium vacuum to high vacuum (HV). For environments requiring ultra-high vacuum (UHV), the CF flange system is appropriate, so tell us the operating environment and we will advise on suitability and alternatives.

Must it always be used as a set with the centering ring?

Yes. The ISO flange system has a standard configuration where a centering ring (with O-ring) is sandwiched between two flanges and fastened. Direct fastening without the centering ring will not seat the O-ring and form no seal, so as a rule prepare flanges, centering rings, and O-rings as same-size sets.