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INSTRUMENTATION / INTERACTIVE 3D

Bourdon pressure-gauge concept

Inspect a hollow oval sensing tube, blind socket galleries, separate linkage, gear-shaped members and an uncalibrated dial.

Static preview of the bourdon pressure-gauge concept schematic
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Drag to orbit · Scroll or pinch to zoom · Select a visible part or use the parts list. Keyboard: focus the view and use arrow keys to orbit.

HOW TO READ THIS MODEL

The system, explained.

WIKA describes a curved oval Bourdon tube whose pressure-related deflection is transferred through a movement to a pointer. This original static assembly makes those regions inspectable: an open pressure-entry stem and blind socket galleries reach a hollow C-shaped tube with a separate closed tip. A link, lever, sector-shaped member, pinion, spindle and pointer are individually named. The tube does not deform, gears do not move and the pointer has an arbitrary position. Forty-one repeated dial ticks have no units or numeric pressure scale. The independent vessel, control-valve and relief-valve examples have different roles; these original models do not specify an installed instrument or a control/protection system.

Model scope and limits

Original invented static geometry: hollow connection stem, connected blind socket galleries with retained top/end walls, nested oval C-tube surfaces, separate closed-tip marker and an external link-lug location, bored rounded-end links, pivot markers, fourteen sector and twelve pinion radial tooth envelopes, separate spindle, bridges/bushes, spiral bias marker, hollow case, rear cover, bezel/window-location ring, bored plain dial, pointer/tail/boss and separate smooth joint hardware. 89 named mesh instances include 41 repeated unitless tick markers. No OEM figures/CAD, product dimensions, materials, ratings, numeric pressure scale or procedures adopted. Deliberate gaps distinguish location markers and are not selected fits or welded/clamped engagements. No pressure deformation, stress, hysteresis, friction, spring rate, conjugate gear profile/contact/motion, leakage, calibrated range/accuracy/units, pressure reference, electrical signal, alarm, protection, ingress/safety case classification or qualified installation. No selection, connection, opening, calibration, operating or maintenance procedure.

Further reading: WIKA: general Bourdon tube and movement vocabulary; no source art, dimensions or ratings imported ↗

Source links support further study; no affiliation or endorsement is implied.

CHECK YOUR UNDERSTANDING

What does the pointer position establish in this original model?

Choose an answer

GUIDED COMPONENT STUDY

Trace the system.

Read each explanation, then focus its component in the explorer. This is a learning route through the model, with no operating or maintenance sequence.

  1. Find the independent pressure entry

    The hollow stem has a real open central passage. Its smooth outside supplies no thread, fitting designation, selected connection or installation instruction.

  2. Trace the fixed socket galleries

    A vertical blind passage meets a lateral gallery. The top and left end retain original material. Selected rays verify these geometric cavities, not a leak-tight or rated connection.

  3. Inspect the oval tube wall

    Inner and outer elliptical surfaces follow an original C-shaped centreline. Four sampled actual cross-sections and 192 centreline segments are checked after GLB import. No elastic response, pressure or stress is calculated.

  4. Distinguish the closed tip

    A separate solid oval marker closes the free-end location. It supplies no welded joint, leak result or pressure-related deflection. The link-lug region has a deliberate external gap.

  5. Separate the link from the sensing tube

    The flat link has rounded ends and two real pivot openings. Smooth pins and washers remain separate. Its static pose is an original teaching arrangement, with no kinematic or calibration law.

  6. Follow the sector lever

    A separately bored lever occupies the sector-pivot and link regions. It is not a force, travel, sensitivity or calibrated angle result.

  7. Compare the partial gear-shaped member

    Fourteen original radial tooth envelopes occupy part of this member. A bored pivot region remains visible. The profile is not an involute design, qualified gear ratio or conjugate meshing calculation.

  8. Inspect the pointer pinion

    Twelve original radial tooth envelopes surround a real central opening. The independent smooth spindle passes through it with a deliberate gap. No gear engagement, friction or pointer motion is calculated.

  9. Distinguish the support bridge

    Two axis openings and separate smaller joint bores pass through this original bridge region. Bushes and joint hardware are separate. The poster omits this bridge to expose the gear-shaped parts.

  10. Inspect the spiral marker

    One original strip makes a spiral visible behind the movement. Turns remain separate in the drawing. End attachments, restoring force, spring rate and backlash correction are absent.

  11. Keep the dial separate from a reading

    The plain plate has a real spindle opening and 41 separate unitless tick-position markers. No numbers, range or units are supplied. The static pointer does not report pressure.

  12. Separate enclosure from measurement

    The casing has real inner and outer surfaces and a bottom connection opening. A rear cover, front bezel and annular window-location marker are separate. There is no glass surface, ingress/safety classification or pressure-protection result.

Additional primary references: WIKA: undated general Bourdon tube/movement principle, read September 27; no source art, dimensions, rating, numeric scale or procedure adopted ↗

ACCESSIBLE COMPONENT REFERENCE

Every part, in plain language.

Search all components ↗Model provenance ↗
Pressure connection stem

Open straight pressure-entry envelope, without connection threads or a selected fitting. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Fixed pressure socket

Independent fixed-end block with vertical and lateral galleries; no brazed or welded joint design. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Hollow oval Bourdon tube

C-shaped original element with separate inner and outer oval surfaces and a continuous geometric lumen. No response to pressure is calculated. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Closed tube tip

Separate solid oval end marker closes the sensing-tube tip. No weld, pressure boundary or deformation qualification. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Tube-tip link lug

Separate link-attachment location outside the tube lumen, beside the closed tip. Its deliberate gap is not a welded or fitted connection. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Tip-to-sector link

Original flat link with two actual pivot openings. Its static pose is not a motion or calibration relationship. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Tube-tip pivot pin

Smooth independent pivot marker; selected gaps do not specify a fit or engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Tube-tip pivot washer

Independent annular pivot washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Sector-link pivot pin

Smooth independent pivot marker; selected gaps do not specify a fit or engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Sector-link pivot washer

Independent annular pivot washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Sector lever arm

Original separate lever between linkage and sector-pivot regions; no deflection-to-angle law. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Toothed sector

Fourteen original radial tooth envelopes on a partial gear-shaped member. Profile, backlash and conjugate meshing are not designed. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Pointer pinion

Twelve original radial tooth envelopes around a real central opening. No selected gear ratio, full mesh clearance or calibrated motion. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Pointer spindle

Separate smooth axis passes through pinion and dial openings. No pivot friction, end play or bearing accuracy. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Sector pivot shaft

Independent sector axis; no calibrated gear/link engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Front movement bridge

Separate bridge teaching region with two actual axis bores. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Front sector axis bush

Annular axis-bush location envelope, not a selected bearing or running fit. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Front pointer axis bush

Annular axis-bush location envelope, not a selected bearing or running fit. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear movement bridge

Separate bridge teaching region with two actual axis bores. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear sector axis bush

Annular axis-bush location envelope, not a selected bearing or running fit. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear pointer axis bush

Annular axis-bush location envelope, not a selected bearing or running fit. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Spiral bias-spring marker

One original spiral strip behind the movement. End attachments, spring rate, backlash correction and force are not calculated. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Case cylindrical wall

Hollow enclosure with real inner and outer surfaces; no ingress or safety-case classification. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear enclosure cover

Separate solid rear cover; no pressure relief, blow-out or protection claim. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Front bezel

Full annular front rim with a real centre opening; no retained-glass or exclusion qualification. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Window location ring

Thin annular window-location marker. No glass surface, material or rated retention is modeled; the open centre lets the plain dial remain visible. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Uncalibrated dial plate

Plain original dial carrier. No numeric pressure scale, units, range or calibration is supplied. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 1

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 2

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 3

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 4

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 5

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 6

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 7

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 8

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 9

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 10

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 11

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 12

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 13

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 14

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 15

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 16

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 17

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 18

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 19

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 20

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 21

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 22

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 23

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 24

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 25

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 26

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 27

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 28

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 29

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 30

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 31

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 32

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 33

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 34

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 35

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 36

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 37

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 38

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 39

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 40

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Illustrative dial tick 41

Repeated unitless tick-position marker. Its spacing and count are invented, with no measured or calibrated pressure value. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Pointer blade

Static pointer shape at an arbitrary uncalibrated position. No live signal, pressure reading or alarm threshold. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Pointer centre boss

Annular pointer-location boss around a separate spindle, with deliberate clearance. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Pointer counter-tail

Independent tail-shaped region; static geometry supplies no balance calculation. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 1 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 1 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 1 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 2 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 2 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 2 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 3 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 3 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 3 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 4 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 4 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Rear cover joint 4 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 1 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 1 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 1 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 2 smooth stud

Smooth joint marker; no threads, retention, preload or procedure. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 2 washer

Separate annular washer. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Bridge joint 2 nut

Hexagonal nut envelope with a true bore; no thread engagement. Original static teaching geometry; invented proportions, no calibrated pressure, deformation, accuracy, leak, gear-contact, material or service qualification.

Distinguish indication, control and relief.

Spring-loaded pressure-relief concept ↗Globe control valve ↗Three-phase separator ↗

These independent original concepts distinguish component roles. They do not specify an installed instrument, compatible connection, measured value, control loop or protection system.