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exported necessary COPI_0000104
Choke Control Valve
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000104
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
A choke control valve is a control valve that has a choke geometry component for pressure reduction through flow restriction.
PT-BR
Uma válvula de controle de choke é uma válvula de controle que possui um componente de geometria de choke para redução de pressão através de restrição de fluxo.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every choke control valve is a control valve that has a choke geometry component at all times.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (ChokeControlValve(x) → ControlValve(x) ∧ ∃f (ProcessControlledFlowFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: ProcessControlledFlowFunction]∀f (ProcessControlledFlowFunction(f) → ∀p (realizedIn(f,p) → ProcessControlledFlowProcess(p)) ∧ ∃p (ProcessControlledFlowProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (ChokeControlValve(x) → ∃hasComponentPartAtAllTimes.ChokeGeometry) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Necessary part: Actuator]∀x (ChokeControlValve(x) → ∃p (Actuator(p) ∧ hasComponentPartAtAllTimes(x,p))) — Step 4: mereological commitment — every instance must have this part [Process participation signature]∀x ∀f ((ChokeControlValve(x) ∧ ProcessControlledFlowFunction(f) ∧ bearerOf(x,f)) → ∃m (FluidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (FluidPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,PressureReduction)) — Step 5: typed participants in the realising process
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix : <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix bfo: <http://purl.obolibrary.org/obo/> . @prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> . @prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix qudt: <http://qudt.org/schema/qudt/> . @prefix dcterms: <http://purl.org/dc/terms/> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix apv: <http://inf.ufrgs.br/ontologies/apv#> . ### COPI — Core Ontology for Petroleum Installations ### Class module: ChokeControlValve <https://www.inf.ufrgs.br/ontologies/copi> rdf:type owl:Ontology ; dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ; dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ; dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ; skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ; skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ; skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ; skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ; owl:versionInfo "1.1.0-104-g4d16eff" ; owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ; owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ; dcterms:creator "Nicolau Oyhenard dos Santos"@en ; dcterms:contributor "Cauã Antunes" ; dcterms:contributor "Haroldo Rojas" ; dcterms:contributor "Rafael Petry" ; dcterms:contributor "Régis Romeu" ; dcterms:contributor "Mara Abel" ; dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ; dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ; dcterms:license <https://creativecommons.org/licenses/by/4.0/> ; dcterms:created "2026-04-08"^^xsd:date ; dcterms:modified "2026-07-13"^^xsd:date ; apv:GlobalMinLanguageCoverage "en pt-br" ; apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ; apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" . iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ; apv:MinAnnotationLength 20 . ### Identity-giving function :ProcessControlledFlowFunction rdf:type owl:Class ; rdfs:subClassOf :FlowControlFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :ProcessControlledFlowProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :ProcessControlledFlowProcess ] ; rdfs:label "process controlled flow function"@en ; rdfs:label "função de controle de fluxo de processo"@pt-br . :FlowControlFunction rdf:type owl:Class . ### Process type :ProcessControlledFlowProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "process controlled flow process"@en ; rdfs:label "processo de controle de fluxo de processo"@pt-br . :ProcessControlledFlowProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :FluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :FluidPortion ] . ### Equipment universal: ChokeControlValve :ChokeControlValve rdf:type owl:Class ; rdfs:subClassOf :ControlValve ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :ProcessControlledFlowFunction ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasComponentPartAtAllTimes ; owl:someValuesFrom :Actuator ] ; rdfs:label "choke control valve"@en ; rdfs:label "válvula de controle de choke"@pt-br ; iof-av:naturalLanguageDefinition "A choke control valve is a control valve that has a choke geometry component for pressure reduction through flow restriction."@en ; skos:definition "A choke control valve is a control valve that has a choke geometry component for pressure reduction through flow restriction."@en ; iof-av:naturalLanguageDefinition "Uma válvula de controle de choke é uma válvula de controle que possui um componente de geometria de choke para redução de pressão através de restrição de fluxo."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every choke control valve is a control valve that has a choke geometry component at all times."@en ; iof-av:firstOrderLogicAxiom "∀x (ChokeControlValve(x) → ControlValve(x) ∧ ∃y (ChokeGeometry(y) ∧ hasComponentPartAtAllTimes(x,y)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Using necessary conditions because this is classified as 'both' functional and constructive. The constructive differentia (choke geometry) makes it safer to use necessary conditions to avoid forcing all valves with choke components into this specific control category under the Open World Assumption."@en ; :Actuator rdf:type owl:Class ; rdfs:subClassOf iof-core:Assembly ; rdfs:label "atuador"@pt-br ; rdfs:label "actuator"@en . # Disjointness: ChokeControlValve and EmergencyShutDownValve [] rdf:type owl:AllDisjointClasses ; owl:members ( :ChokeControlValve :EmergencyShutDownValve ) . # Disjointness: ChokeControlValve and ManualValve [] rdf:type owl:AllDisjointClasses ; owl:members ( :ChokeControlValve :ManualValve ) . # Disjointness: ChokeControlValve and SelfOperatingValve [] rdf:type owl:AllDisjointClasses ; owl:members ( :ChokeControlValve :SelfOperatingValve ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
ProcessControlledFlowFunction ⊑ FlowControlFunction
Realized in
ProcessControlledFlowProcess ⊑ PlannedProcess
The identity-giving function is process-controlled flow, inherited from control valve. This function involves responding to external control signals to modulate flow, distinguishing it from manual or self-actuated valves. The choke mechanism provides the specific implementation for this controlled flow function.
2 Genus DeterminationDeterminação do Gênero
control valvebfo:Object (BFO_0000030)
Following the parent candidates and the ISO 15926 definition stating this is both a CONTROL VALVE and a CHOKE VALVE, the most specific superclass is 'control valve' which is already enriched in our ontology. While it's also a choke valve constructively, control valve is the more specific functional classification that provides the actuator and external signal response capabilities.
3 Differentia SpecificaDiferença Específica
∃hasComponentPartAtAllTimes.ChokeGeometry

Has a choke geometry component that creates pressure reduction through flow restriction.

The differentia is the choke geometry component that distinguishes this from other control valve subtypes. The control valve genus already provides the actuator, process control function, and signal response capabilities, so the minimal additional condition is the specific choke mechanism for pressure reduction.
4 Necessary PartsPartes Necessárias
Part classParentRelation
ActuatorAssemblyhasComponentPartAtAllTimes
The choke geometry is the essential differentiating component, while the actuator is inherited from the control valve genus but still necessary for this specific type.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'higher pressure upstream'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'lower pressure downstream, controllable flow rate'}
TransformationTransformação
pressure reduction through controlled flow restriction with actuator modulation
The signature combines choke valve pressure reduction with control valve modulation capabilities. Single input/output streams with pressure differential and controllable flow rate based on external signals.
Disjoint WithDisjunto com
EmergencyShutDownValve ManualValve SelfOperatingValve
C4: emergency shut down valve, manual valve, self-operating valve. Disjoint with emergency shut down valve (rapid closure vs modulating control), manual valve (external actuation vs manual operation), and self-operating valve (external signals vs self-actuated response) due to incompatible control mechanisms.
MetadataMetadados
COPI IDCOPI IDCOPI_0000104
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000104
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-25
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
image/svg+xml
ISA 5.1-2022 — wikimedia/control_valve.svg
Quick factsDados rápidos
GenusGênerocontrol valve
Root classClasse raizAssembly
Axiom modeModonecessary
FunctionFunçãoProcessControlledFlowFunction
ProcessProcessoProcessControlledFlowProcess
PartsPartes1
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 CHOKE CONTROL VALVE
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS choke control valve
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.