exported necessary COPI_0000371
Valve Seat
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000371
Generated onGerado em 2026-05-04
Natural Language DefinitionDefinição em Linguagem Natural
EN
A MaterialArtifact that is part of a valve and that provides the seating surface against which the closure member bears to achieve shut-off and control of process fluid flow.
PT-BR
Um MaterialArtifact que é parte de uma válvula e que fornece a superfície de assentamento contra a qual o membro de fechamento se apoia para alcançar o fechamento e controle do fluxo de fluido de processo.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
ValveSeat ⊑ MaterialArtifact ⊓ ∃partOf.Valve ⊓ ∃adjacentTo.ValveClosureMember ⊓ ∃bearerOf.SealingSurfaceQuality
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (ValveSeat(x) → MaterialArtifact(x) ∧ ∃f (FlowControlFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: FlowControlFunction]∀f (FlowControlFunction(f) → ∀p (realizedIn(f,p) → FlowControlProcess(p)) ∧ ∃p (FlowControlProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (ValveSeat(x) → ∃partOf.Valve ⊓ ∃adjacentTo.ValveClosureMember ⊓ ∃bearerOf.SealingSurfaceQuality) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Necessary part: ?]∀x (ValveSeat(x) → ∃p (?(p) ∧ hasComponentPartAtAllTimes(x,p))) — Step 4: mereological commitment — every instance must have this part [Process participation signature]∀x ∀f ((ValveSeat(x) ∧ FlowControlFunction(f) ∧ bearerOf(x,f)) → ∃m (FluidPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (FluidPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,FlowRegulation)) — 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: ValveSeat <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 :FlowControlFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :FlowControlProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :FlowControlProcess ] ; rdfs:label "flow control function"@en ; rdfs:label "função de controle de fluxo"@pt-br ; iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in a FlowControlProcess and that consists in the capacity to regulate, direct, or interrupt the flow of fluids through a conduit or system by means of movable elements that alter flow passages."@en ; skos:definition "A DesignedFunction that is realized in a FlowControlProcess and that consists in the capacity to regulate, direct, or interrupt the flow of fluids through a conduit or system by means of movable elements that alter flow passages."@en . ### Process type :FlowControlProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "flow control process"@en ; rdfs:label "processo de controle de fluxo"@pt-br ; iof-av:naturalLanguageDefinition "A PlannedProcess in which the flow of fluid through a conduit is regulated, directed, or interrupted by mechanical means, typically involving the movement of closure elements against seating surfaces to modify flow passages."@en ; skos:definition "A PlannedProcess in which the flow of fluid through a conduit is regulated, directed, or interrupted by mechanical means, typically involving the movement of closure elements against seating surfaces to modify flow passages."@en . :FlowControlProcess 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: ValveSeat :ValveSeat rdf:type owl:Class ; rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :FlowControlFunction ] ; rdfs:label "valve seat"@en ; rdfs:label "assento de válvula"@pt-br ; iof-av:naturalLanguageDefinition "A MaterialArtifact that is part of a valve and that provides the seating surface against which the closure member bears to achieve shut-off and control of process fluid flow."@en ; skos:definition "A MaterialArtifact that is part of a valve and that provides the seating surface against which the closure member bears to achieve shut-off and control of process fluid flow."@en ; iof-av:naturalLanguageDefinition "Um MaterialArtifact que é parte de uma válvula e que fornece a superfície de assentamento contra a qual o membro de fechamento se apoia para alcançar o fechamento e controle do fluxo de fluido de processo."@pt-br ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Valve seat is a constructive type defined by its structural configuration and interface role. Under the Open World Assumption, making this an equivalence class could lead to false positives where any artifact that is part of a valve and adjacent to a closure member gets classified as a valve seat, even if it serves a different structural role (such as guides, stops, or supports)."@en ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000059 ] ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
FlowControlFunction ⊑ DesignedFunction
Realized in
FlowControlProcess ⊑ PlannedProcess
The valve seat participates in the broader FlowControlFunction of the valve system - it provides the seating interface that enables shut-off and throughput control. While the seat itself is structurally defined, it inherits the function of the valve assembly it belongs to.
2 Genus DeterminationDeterminação do Gênero
MaterialArtifactbfo:Object (BFO_0000030)
Valve seat is a valve component - a manufactured part within a valve assembly. It is not itself an Assembly (it doesn't have removable subcomponents), but rather a MaterialArtifact that serves as a structural component. No more specific parent exists in the enriched classes - 'valve component' as a class has not been enriched yet.
3 Differentia SpecificaDiferença Específica
∃partOf.Valve ⊓ ∃adjacentTo.ValveClosureMember ⊓ ∃bearerOf.SealingSurfaceQuality

A MaterialArtifact that is part of a valve and provides the seating surface against which the closure member bears to achieve shut-off and control throughput.

The differentia captures the valve seat's unique structural role: it is the specific part that provides the seating interface for the closure member. This distinguishes it from other valve components that have different structural roles within the valve assembly.
4 Necessary PartsPartes Necessárias
Part classParentRelation
MaterialArtifacthasComponentPartAtAllTimes
Valve seats can be implemented in various ways - some are integral to the valve body, others are separate components, and some contain inserts. The definition focuses on the functional interface rather than consistent internal parts, so no universal component parts are required at this level.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'process fluid flowing through valve'}
OutputsSaídas
{'type': 'FluidPortion', 'count': 1, 'constraints': 'controlled fluid flow (may be zero flow in closed position)'}
TransformationTransformação
mechanical interface that enables sealing contact with closure member to control fluid passage through the valve
The valve seat participates in flow regulation by providing the sealing interface. It receives contact force from the closure member and enables controlled fluid passage based on the sealing contact achieved.
MetadataMetadados
COPI IDCOPI IDCOPI_0000371
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000371
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-05-04
UpdatedAtualizado2026-07-12
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13