Manual Valve

Definition & axiom

Label (EN)

manual valve

Label (PT-BR)

Definition (EN)

Definition (PT-BR)

Semi-formal axiom (Aristotelian)

Axiom type

Necessary only (⊑) Necessary + sufficient (≡)

LLM classification basis: structure-based → ⊑

This concept is defined by its actuation mechanism (manual/hand operation) rather than by a specific functional role. Any valve type can be manually actuated, making this a constructive classification based on the physical operation method.

Validation status

Why primitive (necessary only)

Reviewer notes

FOL theory & disjointness

First-order logic theory (generated)

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Disjoint with

▸ Expert review — accepted

Axiomatization steps

1 Identity-Giving Function ✓ done FlowControlFunction → FlowControlProcess ⊑ FlowControl ▼

Function Class

Parent ↗ IOF-Core

Process Class

Process Parent ↗ IOF-Core

COPI-Core operation FlowControl via process parent FlowControl

LLM rationale: Manual valves inherit the generic function of all valves - controlling fluid flow. The manual aspect relates to the actuation mechanism, not to a distinct functional role.

▸ Expert review — accepted

2 Genus Proximus ✓ done Valve · MaterialArtifact ▼

Genus (genus proximum)

Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.

BFO/IOF-Core Root

bfo:Object branch

Assembly ↗

Disassemblable unit (pump, compressor, HX)

MaterialArtifact ↗

Monolithic artefact (valve, pipe, sensor)

Object ↗

bfo:Object — when neither Assembly nor MaterialArtifact fits

FiatObjectPart ↗

Fiat part (well interval, pipe segment)

bfo:ObjectAggregate branch

EngineeredSystem ↗

Deliberate system of interacting objects (train, package)

ObjectAggregate ↗

bfo:ObjectAggregate — when EngineeredSystem is too specific

bfo:ImmaterialEntity branch

Site ↗

bfo:Site — cavity / spatial region (wellbore, annulus). No DesignedFunction axiom.

LLM rationale: From parent_candidates, 'valve' is the direct and most specific superclass. Manual valve is a subtype of valve distinguished by actuation method. Valve is already enriched in our ontology.

▸ Expert review — accepted

3 Differentia Specifica ✓ done ∃hasPart.ManualActuator ▼

Conditions that distinguish Manual Valve from sibling classes under genus Valve. Only what is not already entailed by the genus.

Differentia expression

Differentia (natural language)

LLM rationale: Manual actuation is the defining characteristic that distinguishes manual valves from other valve types. This is a constructive differentia based on the physical actuation mechanism.

▸ Expert review — accepted

4 Necessary Parts ✓ done no necessary parts ▼

Consider part-whole relations beyond subsumption: hasComponentPartAtAllTimes (universal, structurally essential) · hasComponentPartAtSomeTime (contingent, optional component)

LLM rationale: Manual actuator is the essential differentiating part. Hand wheel is common but valve-type specific (gate, globe vs ball, butterfly may have different manual interfaces).

▸ Expert review — accepted

5 Process Participation Signature ⟨I, O, T⟩ ✓ done PortionOfFluid → PortionOfFluid ▼

Inputs (I)

Outputs (O)

Transformation (T)

LLM rationale: Same process signature as generic valve - single fluid stream with flow control. Manual aspect affects the control mechanism but not the fluid transformation.

▸ Expert review

Alternative labels none ▼

Synonyms / alternative labels (comma-separated) — skos:altLabel

Language auto-detected on export (PT if the label contains accents, EN otherwise).

Properties as BFO qualities 0 of 8 selected ▼

Select which CFIHOS/DEXPI properties inhere in every instance of Manual Valve as bfo:Quality subclasses.

design specification Text

A specification according to which an item is intended to be designed

failure action Text

The position to which the valve closure member moves when the actuating energy source fails

fluid name Text

The name of the product in liquid or gas phase.

full opening valve Boolean

Valve with an unobstructed opening, not smaller than the internal bore of the end connections.

nominal diameter millimetre Number

A diameter which is an expected (theoretical/as designed) diameter.

normal operating pressure bar gauge Number

A pressure at which a functional or physical object is expected to operate normally.

normal operating temperature degree celsius Number

A temperature at which a functional or physical object is expected to operate normally.

piping class Text

A specification defined by specified circumstances in which piping components may be applied.

Each selected property → :ManualValveQuality ⊑ bfo:Quality, inheres in :ManualValve

Custom axioms none ▼

Axioms not produced by the pipeline. Each is appended verbatim as an rdfs:subClassOf restriction on Manual Valve.

Write the restriction block in Turtle syntax (without the leading rdfs:subClassOf). Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]

Cross-standard divergences none detected yet ▼

Full matrix

Click "Detect divergences" to analyse cross-standard disagreements for this cluster.

Source Definitions (1)

cfihos V2.0

manual valve — TagAndEquipmentClass

Definition text hidden (copyrighted standard) — sign in to view, or follow the source link above.

Provenance tiers (1)

Sources the pipeline cited while building this entry. Verbatim = the quote was copied word-for-word from that source; summary = paraphrased.

primary cfihos manual valve

standard · verbatim

Quote hidden — sign in to view.

Linked competency questions

answered What are all the subclasses of Valve recognised in COPI?
answered Which equipment classes in COPI have iof:Assembly as their BFO genus root?
answered Is a diaphragm valve a type of manual valve or a type of control valve?
open What is a manual actuator?
open Is a manual actuator a necessary component of every manual valve?

Manage all CQs →

OWL/Turtle preview

Download .ttl

Numeric COPI_* IRIs from copi-iri-map.tsv, with the readable name as a trailing comment. Names not yet in the map stay readable.

ID 57 · claude-sonnet-4-20250514

Created 2026-04-13 23:41

Updated 2026-09-08 12:26

↺ Re-run Enrichment with Notes

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