exported
necessary
gate valve
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Gatevalve
Generated on 2026-04-13
Natural Language Definition
EN
A gate valve is a valve that has a gate or disc closure member with linear motion parallel to the plane of flat seats, which are transverse to the direction of flow.
PT-BR
Uma válvula gaveta é uma válvula que possui um membro de fechamento tipo gaveta ou disco com movimento linear paralelo ao plano dos assentos planos, que são transversais à direção do fluxo.
Formal Axioms
Semi-formal (Aristotelian)
Every gate valve is a valve that has a gate closure component and a linear actuation mechanism.
First-Order Logic Theory
Loading…
▸ Stored override
∀x (GateValve(x) → (Valve(x) ∧ ∃g(GateClosure(g) ∧ hasComponentPartAtAllTimes(x,g)) ∧ ∃m(LinearActuationMechanism(m) ∧ hasComponentPartAtAllTimes(x,m))))
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: GateValve
<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 .
### 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 .
: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: GateValve
:COPI_0000120 rdf:type owl:Class ; # GateValve
rdfs:subClassOf :COPI_0000077 ; # Valve
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000026 # FlowControlFunction
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000371 # ValveSeat
] ;
rdfs:label "gate valve"@en ;
rdfs:label "válvula gaveta"@pt-br ;
iof-av:naturalLanguageDefinition "A gate valve is a valve that has a gate or disc closure member with linear motion parallel to the plane of flat seats, which are transverse to the direction of flow."@en ;
skos:definition "A gate valve is a valve that has a gate or disc closure member with linear motion parallel to the plane of flat seats, which are transverse to the direction of flow."@en ;
iof-av:naturalLanguageDefinition "Uma válvula gaveta é uma válvula que possui um membro de fechamento tipo gaveta ou disco com movimento linear paralelo ao plano dos assentos planos, que são transversais à direção do fluxo."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every gate valve is a valve that has a gate closure component and a linear actuation mechanism."@en ;
iof-av:firstOrderLogicAxiom "∀x (GateValve(x) → (Valve(x) ∧ ∃g(GateClosure(g) ∧ hasComponentPartAtAllTimes(x,g)) ∧ ∃m(LinearActuationMechanism(m) ∧ hasComponentPartAtAllTimes(x,m))))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive classification based on physical mechanism. Under OWA, defining sufficient conditions for structural features like 'linear sliding gate' risks false positives from complex hybrid equipment or custom manifolds that contain gate mechanisms but should not be classified as standard gate valves. Necessary conditions provide safer classification that can be validated by domain experts."@en ;
skos:definition "[ISO 15926-4] A <GATE VALVE> is an <ARTEFACT> and a <VALVE> that is a valve where the closure member is a gate or disc with a linear motion parallel, or nearly parallel, to the plane of flat seats, which are transverse to the direction of flow"@en ;
skos:definition "[CFIHOS] A valve that is a valve where the closure member is a gate or disc with a linear motion parallel, or nearly parallel, to the plane of flat seats, which are transverse to the direction of flow."@en ;
skos:definition "[SLB Glossary] A type of valve that incorporates a sliding gate to block fluid flow."@en ;
skos:definition "[OnePetro] A valve with a sliding bar – common in the oilfield as tree valves. Gate valve is defined in API SPEC 6A as a valve assembly with a closure mechanism operating within the body, 90° to the conduit, to affect a closure. Gate valves are commonly used in the wellhead section of the well either as a side outlet valve in the spools or in the Christmas tree. Gate valves have two modes, either fully open or fully closed. This distinguish the gate valve from the chole valve. The gate valve will allow the fluid to follow or it will completely stop it. On the other hand, a choke valve will restrict the flow. Gate valves have several components including but not limited to: * Gate * Seat * Stem * Stem Packing (Seal) * Bearings * Grease fitting * Studs and nuts * Hand wheel"@en ;
skos:definition "[POSC Caesar] A valve that is a valve where the closure member is a gate or disc with a linear motion parallel, or nearly parallel, to the plane of flat seats, which are transverse to the direction of flow."@en .
:COPI_0000371 rdf:type owl:Class ; # ValveSeat
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "assento de válvula"@pt-br ;
rdfs:label "valve seat"@en .
# Disjointness: GateValve and BallValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000120 :COPI_0000095 ) . # GateValve, BallValve
# Disjointness: GateValve and ButterflyValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000120 :COPI_0000100 ) . # GateValve, ButterflyValve
# Disjointness: GateValve and NeedleValve
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000120 :COPI_0000134 ) . # GateValve, NeedleValve
Axiomatization Decision Log
1
Identity-Giving Function
Function class
FlowControlFunction
⊑ DesignedFunction
Realized in
FlowControlProcess
⊑ FlowControl
Gate valves share the same identity-giving function as other valves - controlling fluid flow. The function FlowControlFunction is already established in the enriched valve class. Gate valves do not have a distinct function subtype; their identity comes from their structural mechanism.
✓
Expert review — Accepted
2
Genus Determination
Valve
All source definitions explicitly state that gate valve 'is a valve'. The parent_candidates include VALVE from iso15926, and Valve is already enriched in our ontology with function FlowControlFunction and genus MaterialArtifact. This is the most specific appropriate superclass.
✓
Expert review — Accepted
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| ValveSeat | MaterialArtifact | hasComponentPartAtAllTimes |
These parts define the essential structural components that make a gate valve function with its characteristic linear sliding motion. The gate closure and linear actuation mechanism are unique to gate valves, while seats are common to valves but have specific geometric requirements for gate valve operation.
✓
Expert review — Accepted
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— any phase, pressurized
Outputs (O)
PortionOfFluid
— same composition, controlled flow rate
Transformation (T)
flow rate modification by linear gate positioning
Gate valves typically operate as on/off devices (fully open or fully closed as noted in onepetro definition) but can provide flow control through gate positioning. Single inlet/outlet with mechanical flow control transformation.
✓
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.
Constructive classification based on physical mechanism. Under OWA, defining sufficient conditions for structural features like 'linear sliding gate' risks false positives from complex hybrid equipment or custom manifolds that contain gate mechanisms but should not be classified as standard gate valves. Necessary conditions provide safer classification that can be validated by domain experts.
✓
Expert review — Accepted
Disjointness Axioms
BallValve
ButterflyValve
NeedleValve
C1: BallValve, ButterflyValve, NeedleValve. Gate valves use linear sliding motion which is mechanically incompatible with the rotary motion of ball valves and butterfly valves, and with the axial needle motion of needle valves. These represent mutually exclusive closure mechanisms.
Cross-Standard Observations
All sources consistently define gate valve by its linear sliding closure mechanism. OnePetro provides additional operational context (on/off operation vs. choke valve modulation) and component details. The definitions are remarkably consistent across ISO 15926, CFIHOS, POSC Caesar, and SLB, suggesting strong industry consensus on this constructive classification.