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YES

253B-2-50J-2

YES253B-2-50J-2
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What it is

The YES 253B-2-50J-2 is a Type 253B exhaust throttling valve.[1]

How it works

The Type 253B uses a 15-pin Type D connector for its electrical interface.[1]

What can it run?

Process applications and technology nodes documented for this tool.

  • Vacuum chamber gas throttling
  • Vacuum chamber gas shutoff
  • High vacuum pumping systems

Why won't it start?

Documented failure modes, common issues, and field considerations.

  • The manual states that when operating with high vacuum diffusion pumps, the pressure above the oil vapor jet should not exceed 0.5 milliTorr.

What do the numbers mean?

Vacuum & pumping3

Type
Exhaust Throttle Valve[1]
Accurate?
Function
Regulates or shuts off the removal of gas from a vacuum chamber[1]
Accurate?
Pump label orientation
Oriented toward the high vacuum pump during installation[1]
Accurate?

Configuration & options7

Model
253B-2-50J-2[1]
Accurate?
Valve design
Butterfly valve[1]
Accurate?
Compatible controllers
Type 651, 652, 152G, or 252 (revision D or later)[1]
Accurate?
Flange style
JIS[1]
Accurate?
Connector
15-pin Type "D" connector[1]
Accurate?
Connector cable length
6-inch pigtail cable[1]
Accurate?
O-ring
Customer supplied[1]
Accurate?

Vintage & configurations

Documented models & variants

DesignationGenerationVintageChangesSource
253B-2-50-2——Shown as the KF Style ISO flange example.nanofab.utah.edu[1]
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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • TypeExhaust Throttle Valve[1]
  • FunctionRegulates or shuts off the removal of gas from a vacuum chamber[1]
  • Pump label orientationOriented toward the high vacuum pump during installation[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What is the equipment type?

The YES 253B-2-50J-2 is a Type 253B exhaust throttling valve.[1]

What electrical connector does the Type 253B use?

The Type 253B uses a 15-pin Type D connector.[1]

Not publicly documented

The following facts about the 253B-2-50J-2 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 253B-2-50J-2 are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • The control-system platform and OS era of the 253B-2-50J-2 are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • The process node or technology generation of the 253B-2-50J-2 is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the 253B-2-50J-2 are on record.

    Answerable by: an OEM parts catalog or a service engineer

  • No publicly hosted manuals, SOPs, or datasheets for the 253B-2-50J-2 are on record.

    Answerable by: university cleanroom staff or an OEM application specialist

Sources & citations

Sources (1)Every fact above is drawn from these public sources
  1. [1]nanofab.utah.edu — nanofab.utah.edunanofab.utah.edu
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Last updated Oct 9, 2026.

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