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Manual Viewport Shutters

Manual 100% Full Closure Viewport Shutters: Complete Optical Protection for UHV Applications

Manual 100% Full Closure Viewport Shutters from TFM are specifically designed to provide full and reliable coverage of viewports in ultra-high vacuum (UHV) systems. Engineered for environments where even partial exposure to deposition can degrade optical components, these shutters ensure total sealing of the viewport during critical processing steps such as sputtering, etching, and evaporation.

Unlike partial-cover flapper systems, this model guarantees complete occlusion, shielding the entire viewport face. Ideal for surface analysis instruments, MBE systems, and precision optics, the shutter maintains vacuum integrity and visual clarity for long-term system performance.

Key Technical Features:

  • 100% Full Optical Closure: The flapper plate is sized and positioned to completely cover the viewport aperture, blocking all deposition material during operation.

  • UHV-Compatible Design: Suitable for use at base pressures below 10ā»ā¹ Torr, making it reliable in demanding ultra-high vacuum environments.

  • High-Temperature Bakeout: All materials and components are bakeable to 250Ā°C, ensuring compatibility with standard vacuum maintenance and cleaning protocols.

Manual Actuation Details:

  • Magnetic Rotary Drive Feedthrough: Utilizes a robust magnetic rotary feedthrough for leak-tight manual control, avoiding mechanical penetrations that compromise vacuum conditions.

  • Tangential Axis with Circular Flapper: The shutter mechanism sweeps a circular plate across a tangential axis, precisely sealing the viewport opening with each operation.

  • No External Pneumatics: As a purely manual unit, this system eliminates the need for compressed air or solenoid control, making it ideal for facilities without utility access or in long-cycle processes.

Applications:

  • Deposition viewports in UHV sputtering systems

  • Protective shutters for X-ray and electron microscopy

  • Plasma diagnostics and beamline instruments

  • Any vacuum chamber requiring total optical isolation during processing

TFMā€™s Manual 100% Full Closure Viewport Shutters offer precision protection in a manually controlled format, delivering complete shielding, UHV compatibility, and bakeable durabilityā€”all in a compact, maintenance-friendly design.

Ordering Table

Drawing Flange / Mounting Flange Material Actuation Type PartNumber
Tooltip DN35CF-DN40CF (2.75" OD) 304L SS Manual DS275VPS
Tooltip DN63CF (4.50" OD) 304L SS Manual DS450VPS
Tooltip DN100CF (6.00" OD) 304L SS Manual DS600VPS
Tooltip DN160CF (8.00" OD) 304L SS Manual DS800VPS

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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.

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

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  • 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 pipeā€™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.

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  • 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.

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  • 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 mechanismsā€”pneumatic, electric, or hydraulicā€”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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