exported
necessary
valve closure member
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Valveclosuremember
Generated on 2026-05-04
Natural Language Definition
EN
A MaterialArtifact that is a component part of a valve and that is positioned in the flow stream to permit, obstruct, divert or regulate flow through mechanical positioning.
PT-BR
Um MaterialArtifact que é uma parte componente de uma válvula e que é posicionado no fluxo para permitir, obstruir, desviar ou regular o fluxo através de posicionamento mecânico.
Formal Axioms
Semi-formal (Aristotelian)
Every valve closure member is a material artifact that is a component part of some valve and participates in flow control processes by being positioned within the flow stream.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (ValveClosureMember(x) → MaterialArtifact(x) ∧ ∃v (Valve(v) ∧ isComponentPartOf(x,v)) ∧ ∃p (FlowControlProcess(p) ∧ participatesIn(x,p)) ∧ ∃q (PositionableInFlowStream(q) ∧ hasQuality(x,q)))
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: ValveClosureMember
<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" ;
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 "2026-10-07"^^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
:COPI_0000026 rdf:type owl:Class ; # FlowControlFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000520 # FlowControlProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000520 # 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 permit, obstruct, divert or regulate the flow of fluids through a conduit or system by means of mechanical positioning within the flow stream."@en ;
skos:definition "A DesignedFunction that is realized in a FlowControlProcess and that consists in the capacity to permit, obstruct, divert or regulate the flow of fluids through a conduit or system by means of mechanical positioning within the flow stream."@en .
### Process type
:COPI_0000520 rdf:type owl:Class ; # FlowControlProcess
rdfs:subClassOf :COPI_0000010 ; # FlowControl
rdfs:label "flow control process"@en ;
rdfs:label "processo de controle de fluxo"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which fluid flow is permitted, obstructed, diverted or regulated through the mechanical positioning of a closure member within the flow stream, resulting in the desired flow characteristics."@en ;
skos:definition "A PlannedProcess in which fluid flow is permitted, obstructed, diverted or regulated through the mechanical positioning of a closure member within the flow stream, resulting in the desired flow characteristics."@en .
:COPI_0000010 rdf:type owl:Class . # FlowControl
:COPI_0000520 # FlowControlProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: ValveClosureMember
:COPI_0000370 rdf:type owl:Class ; # ValveClosureMember
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000026 # FlowControlFunction
] ;
rdfs:label "valve closure member"@en ;
rdfs:label "membro de fechamento de válvula"@pt-br ;
iof-av:naturalLanguageDefinition "A MaterialArtifact that is a component part of a valve and that is positioned in the flow stream to permit, obstruct, divert or regulate flow through mechanical positioning."@en ;
skos:definition "A MaterialArtifact that is a component part of a valve and that is positioned in the flow stream to permit, obstruct, divert or regulate flow through mechanical positioning."@en ;
iof-av:naturalLanguageDefinition "Um MaterialArtifact que é uma parte componente de uma válvula e que é posicionado no fluxo para permitir, obstruir, desviar ou regular o fluxo através de posicionamento mecânico."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every valve closure member is a material artifact that is a component part of some valve and participates in flow control processes by being positioned within the flow stream."@en ;
iof-av:firstOrderLogicAxiom "∀x (ValveClosureMember(x) → MaterialArtifact(x) ∧ ∃v (Valve(v) ∧ isComponentPartOf(x,v)) ∧ ∃p (FlowControlProcess(p) ∧ participatesIn(x,p)) ∧ ∃q (PositionableInFlowStream(q) ∧ hasQuality(x,q)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "As a constructive type defined by physical configuration and mechanical role, the valve closure member should use necessary conditions. The structural differentia (being positioned in flow stream) is harder to make sufficient under OWA - other components or hybrid devices might satisfy the conditions but not be classified as standard valve closure members."@en ;
skos:definition "[ISO 15926-4] A <VALVE CLOSURE MEMBER> is a <CLOSURE> that is the part of a valve which is positioned in the flow stream to permit, obstruct, divert or regulate flow"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowControlFunction
⊑ DesignedFunction
Realized in
FlowControlProcess
⊑ FlowControl
The valve closure member inherits the generic FlowControlFunction from its parent valve assembly, as it is the component that physically realizes the flow control by being positioned in the flow stream. This is not a unique function distinguishing it from other valve components, but rather the shared function of all flow control elements.
2
Genus Determination
MaterialArtifact
bfo:Object (BFO_0000030)
Monolithic causally unified material artefact.
MaterialArtifact ≡ Object ⊓ ∃bearerOf.DesignedFunction.
The valve closure member is a designed component part of a valve assembly. It is not itself an Assembly (it has no removable subcomponents), nor is it an aggregate system. It is a causally unified material artifact designed for a specific function within the valve mechanism. No more specific genus like 'ValveComponent' is available in the enriched classes, so MaterialArtifact is the most appropriate parent.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
The valve closure member is defined as a single component part of a valve. The source definition treats it as the basic flow-interfacing element without specifying mandatory subcomponents. The various subtypes (ball, gate, butterfly, etc.) indicate different monolithic geometries rather than assemblies with required parts. No component terms are provided in the known component list, and the ISO definition presents it as an elemental component.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— flowing fluid stream within valve body
Outputs (O)
PortionOfFluid
— flow-modified fluid stream (permitted, obstructed, diverted, or regulated according to closure member position)
Transformation (T)
mechanical positioning within flow stream to permit, obstruct, divert or regulate fluid flow according to desired flow characteristics
The closure member acts on a single fluid stream, modifying its flow characteristics through mechanical positioning. The transformation encompasses the full range of flow control actions (permit/obstruct/divert/regulate) mentioned in the definition.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
As a constructive type defined by physical configuration and mechanical role, the valve closure member should use necessary conditions. The structural differentia (being positioned in flow stream) is harder to make sufficient under OWA - other components or hybrid devices might satisfy the conditions but not be classified as standard valve closure members.
Cross-Standard Observations
Only one source (ISO 15926-4) provides the definition. No cross-standard comparison possible. The concept appears to be well-established with multiple specific subtypes defined, suggesting stable industrial usage.
Source Definitions
1 source
ISO 15926-4
VALVE CLOSURE MEMBER ↗
Definition text withheld (copyrighted standard) — follow the source link above.
Metadata
| Ontology | COPI |
| Research group | INF-UFRGS-Ontologies |
| Funding | CNPq INF-UFRGS-ENERGIA |
| Project | OntoKG / Petrobras |
| ID | #423 |
| Cluster | valve closure member |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-05-04 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/valve.svg
