exported
necessary
choke control valve
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Chokecontrolvalve
Generated on 2026-04-16
Natural Language Definition
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 Axioms
Semi-formal (Aristotelian)
Every choke control valve is a control valve that has a choke geometry component at all times.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (ChokeControlValve(x) → ControlValve(x) ∧ ∃y (ChokeGeometry(y) ∧ hasComponentPartAtAllTimes(x,y)))
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" ;
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 "2026-10-08"^^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_0000027 rdf:type owl:Class ; # ProcessControlledFlowFunction
rdfs:subClassOf :COPI_0000026 ; # FlowControlFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000033 # ProcessControlledFlowProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000033 # ProcessControlledFlowProcess
] ;
rdfs:label "process controlled flow function"@en ;
rdfs:label "função de controle de fluxo de processo"@pt-br .
:COPI_0000026 rdf:type owl:Class . # FlowControlFunction
### Process type
:COPI_0000033 rdf:type owl:Class ; # ProcessControlledFlowProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "process controlled flow process"@en ;
rdfs:label "processo de controle de fluxo de processo"@pt-br .
:COPI_0000033 # ProcessControlledFlowProcess
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: ChokeControlValve
:COPI_0000104 rdf:type owl:Class ; # ChokeControlValve
rdfs:subClassOf :COPI_0000087 ; # ControlValve
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000027 # ProcessControlledFlowFunction
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000207 # 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 ;
skos:definition "[ISO 15926-4] A <CHOKE CONTROL VALVE> is an <INSTRUMENTATION ITEM> and a <CONTROL VALVE> and a <CHOKE VALVE>"@en ;
skos:definition "[CFIHOS] A choke valve that is equipped with an actuator that manipulates a stream of fluid in the response to a signal from an external sensing element and with input of energy from an external source."@en .
:COPI_0000207 rdf:type owl:Class ; # Actuator
rdfs:subClassOf iof-core:Assembly ;
rdfs:label "atuador"@pt-br ;
rdfs:label "actuator"@en .
# Disjointness: ChokeControlValve and EmergencyShutDownValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000104 :COPI_0000114 ) . # ChokeControlValve, EmergencyShutDownValve
# Disjointness: ChokeControlValve and ManualValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000104 :COPI_0000133 ) . # ChokeControlValve, ManualValve
# Disjointness: ChokeControlValve and SelfOperatingValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000104 :COPI_0000149 ) . # ChokeControlValve, SelfOperatingValve
Axiomatization Decision Log
1
Identity-Giving Function
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.
✓
Expert review — Accepted
2
Genus Determination
ControlValve
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.
✓
Expert review — Accepted
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| Actuator | Assembly | hasComponentPartAtAllTimes |
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.
✓
Expert review — Accepted
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— higher pressure upstream
Outputs (O)
PortionOfFluid
— lower pressure downstream, controllable flow rate
Transformation (T)
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.
✓
Expert review — Accepted
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.
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.
✓
Expert review — Accepted
Disjointness Axioms
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.
Cross-Standard Observations
ISO 15926 provides the most comprehensive view by showing the multiple inheritance from both CONTROL VALVE and CHOKE VALVE. CFIHOS provides operational detail about actuator manipulation and external signal response. Both sources align on the core concept of combining control valve functionality with choke valve pressure reduction mechanism.
Source Definitions
2 sources
ISO 15926-4
CHOKE CONTROL VALVE ↗
Definition text withheld (copyrighted standard) — follow the source link above.
CFIHOS
choke control valve
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 | #168 |
| Cluster | choke control valve |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-04-16 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/control_valve.svg
