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Manual 100% Full Closure Viewport Shutters

Manual 100% Full Closure Viewport Shutters: Total Viewport Protection for High Vacuum and UHV Environments

TFM’s Manual 100% Full Closure Viewport Shutters are engineered to provide absolute protection for viewports in high vacuum (HV) and ultra-high vacuum (UHV) applications. These shutters are specifically designed to prevent material deposition during coating and plasma processes, ensuring long-term visibility and eliminating costly downtime caused by viewport contamination.

Unlike partial shutters, this design ensures true line-of-sight protection through a precision overlapping baffle that completely blocks exposure to incoming particles. This makes it ideal for deposition systems where even minor coating can render optics unusable.

Key Features:

  • 100% Full Closure Coverage: The shutter fully overlaps the viewport with a specially designed baffle, ensuring no line-of-sight exposure during deposition or plasma processes.

  • Manual Actuation: Operated manually via magnetic rotary feedthrough, allowing for full control without electrical or pneumatic systems. This design avoids breaking vacuum for cleaning or replacement, saving time and operational costs.

  • Flexible Installation: Can be mounted in any orientation, providing integration flexibility across a wide range of chamber geometries and designs.

  • UHV-Compatible: Rated for base pressures below 10⁻⁹ Torr, making it suitable for the most demanding UHV environments.

  • Bakeout Resilience: Constructed from high-purity, vacuum-compatible materials and bakeable to 250°C, supporting thorough system decontamination without component degradation.

  • Upgrade Options: Pneumatic and position feedback configurations are available for automated or semi-automated systems.

Ideal For:

  • Physical vapor deposition (PVD) systems

  • Optical coating chambers

  • MBE systems and beamline shielding

  • XPS, SEM, and other UHV-based diagnostic equipment

TFM’s Manual 100% Full Closure Viewport Shutters provide the precision, durability, and vacuum integrity required to protect sensitive optics in deposition-heavy environments—ensuring productivity and clarity without compromise.

Ordering Table

Drawing Flange / Mounting Flange Material Actuation Type PartNumber
Tooltip DN35CF-DN40CF (2.75" OD) 316L SS Manual VPSFC38
Tooltip DN63CF (4.50" OD) 316L SS Manual VPSFC64
Tooltip DN100CF (6.00" OD) 316L SS Manual VPSFC100
Tooltip DN160CF (8.00" OD) 316L SS Manual VPSFC150

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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