exported
necessary
angle valve body
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Anglevalvebody
Generated on 2026-05-04
Natural Language Definition
EN
A ValveBody that has an internal flow path geometry where the inlet and outlet axes are positioned at an angle to each other, creating an L-shaped or angled flow configuration.
PT-BR
Um ValveBody que possui uma geometria de caminho de fluxo interno onde os eixos de entrada e saída são posicionados em ângulo um em relação ao outro, criando uma configuração de fluxo em formato de L ou angular.
Formal Axioms
Semi-formal (Aristotelian)
AngleValveBody subClassOf ValveBody and hasGeometry some AngularFlowPath
First-Order Logic Theory
Loading…
▸ Stored override
∀x (AngleValveBody(x) → ValveBody(x) ∧ ∃g (AngularFlowPath(g) ∧ hasGeometry(x,g)))
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: AngleValveBody
<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 regulate, direct, or restrict the flow of fluids through a system by means of movable internal components."@en ;
skos:definition "A DesignedFunction that is realized in a FlowControlProcess and that consists in the capacity to regulate, direct, or restrict the flow of fluids through a system by means of movable internal components."@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 regulated, directed, or restricted through a valve body by positioning internal closure elements to achieve desired flow characteristics."@en ;
skos:definition "A PlannedProcess in which fluid flow is regulated, directed, or restricted through a valve body by positioning internal closure elements to achieve 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: AngleValveBody
:COPI_0000211 rdf:type owl:Class ; # AngleValveBody
rdfs:subClassOf :COPI_0000078 ; # ValveBody
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000026 # FlowControlFunction
] ;
rdfs:label "angle valve body"@en ;
rdfs:label "corpo de válvula angular"@pt-br ;
iof-av:naturalLanguageDefinition "A ValveBody that has an internal flow path geometry where the inlet and outlet axes are positioned at an angle to each other, creating an L-shaped or angled flow configuration."@en ;
skos:definition "A ValveBody that has an internal flow path geometry where the inlet and outlet axes are positioned at an angle to each other, creating an L-shaped or angled flow configuration."@en ;
iof-av:naturalLanguageDefinition "Um ValveBody que possui uma geometria de caminho de fluxo interno onde os eixos de entrada e saída são posicionados em ângulo um em relação ao outro, criando uma configuração de fluxo em formato de L ou angular."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "AngleValveBody subClassOf ValveBody and hasGeometry some AngularFlowPath"@en ;
iof-av:firstOrderLogicAxiom "∀x (AngleValveBody(x) → ValveBody(x) ∧ ∃g (AngularFlowPath(g) ∧ hasGeometry(x,g)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type based on geometric configuration. Under OWA, sufficient conditions for geometric characteristics like 'angular flow path' are difficult to specify precisely without detailed geometric constraints that could lead to false classification of complex multi-path valve bodies or hybrid designs."@en ;
skos:definition "[ISO 15926-4] An <ANGLE VALVE BODY> is a <VALVE BODY> of an angle valve"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowControlFunction
⊑ DesignedFunction
Realized in
FlowControlProcess
⊑ FlowControl
As a valve body component, the angle valve body inherits the generic flow control function of valve assemblies. The function is not specific to the angled geometry - it is the general valve function that any valve body (straight, angled, or other configuration) must support.
2
Genus Determination
ValveBody
The ISO 15926-4 definition explicitly states that an angle valve body is a valve body. ValveBody is the most specific appropriate genus, representing the structural housing component of valve assemblies. While ValveBody is not yet enriched in our ontology, it is the obvious immediate parent class. The BFO root is Assembly because valve bodies are manufactured artifacts with removable subcomponents (end connections, internal flow passages) that form a causally unified whole.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| None | MaterialArtifact | hasComponentPartAtAllTimes |
The provided component terms are all subtypes of angle valve body rather than parts of an angle valve body. The essential geometric flow passage that creates the angular configuration is necessary but cannot be specifically named from the available sources.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— entering through inlet axis
Outputs (O)
PortionOfFluid
— exiting through outlet axis at angle to inlet
Transformation (T)
fluid flow direction changed through angular internal geometry without altering fluid properties
The signature reflects the geometric transformation of flow direction through the angular internal path. The fluid itself is not chemically or physically altered - only its flow direction is changed from the inlet axis orientation to the outlet axis orientation.
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.
Constructive type based on geometric configuration. Under OWA, sufficient conditions for geometric characteristics like 'angular flow path' are difficult to specify precisely without detailed geometric constraints that could lead to false classification of complex multi-path valve bodies or hybrid designs.
Cross-Standard Observations
Only ISO 15926-4 provides a definition for this concept. The definition is brief but clear in establishing the geometric basis for the classification.
Source Definitions
1 source
ISO 15926-4
ANGLE VALVE BODY ↗
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 | #416 |
| Cluster | angle valve body |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-05-04 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/valve.svg
