Core Ontology for Petroleum Installations · INF-UFRGS-Ontologies · CNPq INF-UFRGS-ENERGIA inf.ufrgs.br/ontologies/copi dee69df
ISA 5.1 symbol for diaphragm pump
exported necessary
diaphragm pump
IRI: http://www.inf.ufrgs.br/ontologies/copi#Diaphragmpump
Generated on 2026-04-16
Natural Language Definition
EN
A diaphragm pump is a reciprocating pump that uses flexible diaphragms to displace liquid and seal the pumped fluid from atmospheric leakage.
PT-BR
Uma bomba de diafragma é uma bomba alternativa que usa diafragmas flexíveis para deslocar líquido e selar o fluido bombeado contra vazamento atmosférico.
Formal Axioms
Semi-formal (Aristotelian)
Every diaphragm pump is a reciprocating pump that has flexible diaphragm as component part at all times and participates in diaphragm sealing.
First-Order Logic Theory
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▸ Stored override ∀x(DiaphragmPump(x) → (ReciprocatingPump(x) ∧ ∃d(FlexibleDiaphragm(d) ∧ hasComponentPartAtAllTimes(x,d)) ∧ ∃p(DiaphragmSealing(p) ∧ participatesIn(x,p))))
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: DiaphragmPump <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_0000066 rdf:type owl:Class ; # PumpingFunction rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :COPI_0000616 # PumpingProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :COPI_0000616 # PumpingProcess ] ; rdfs:label "pumping function"@en ; rdfs:label "função de bombeamento"@pt-br . ### Process type :COPI_0000616 rdf:type owl:Class ; # PumpingProcess rdfs:subClassOf :COPI_0000003 ; # MomentumTransfer rdfs:label "pumping process"@en ; rdfs:label "processo de bombeamento"@pt-br . :COPI_0000003 rdf:type owl:Class . # MomentumTransfer :COPI_0000616 # PumpingProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :COPI_0000038 # PortionOfLiquid ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :COPI_0000038 # PortionOfLiquid ] . ### Equipment universal: DiaphragmPump :COPI_0000249 rdf:type owl:Class ; # DiaphragmPump rdfs:subClassOf :COPI_0000337 ; # ReciprocatingPump rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :COPI_0000066 # PumpingFunction ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasComponentPartAtAllTimes ; owl:someValuesFrom :COPI_0000519 # FlexibleDiaphragm ] ; rdfs:label "diaphragm pump"@en ; rdfs:label "bomba de diafragma"@pt-br ; iof-av:naturalLanguageDefinition "A diaphragm pump is a reciprocating pump that uses flexible diaphragms to displace liquid and seal the pumped fluid from atmospheric leakage."@en ; skos:definition "A diaphragm pump is a reciprocating pump that uses flexible diaphragms to displace liquid and seal the pumped fluid from atmospheric leakage."@en ; iof-av:naturalLanguageDefinition "Uma bomba de diafragma é uma bomba alternativa que usa diafragmas flexíveis para deslocar líquido e selar o fluido bombeado contra vazamento atmosférico."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every diaphragm pump is a reciprocating pump that has flexible diaphragm as component part at all times and participates in diaphragm sealing."@en ; iof-av:firstOrderLogicAxiom "∀x(DiaphragmPump(x) → (ReciprocatingPump(x) ∧ ∃d(FlexibleDiaphragm(d) ∧ hasComponentPartAtAllTimes(x,d)) ∧ ∃p(DiaphragmSealing(p) ∧ participatesIn(x,p))))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Using necessary conditions because this is a constructive type defined by physical mechanism. Under OWA, any pump with a flexible diaphragm component could be classified as a diaphragm pump, but there may be hybrid or specialized equipment containing diaphragms that should not be automatically classified into this maintenance category."@en ; skos:definition "[ISO 15926-4] A <DIAPHRAGM PUMP> is a <RECIPROCATING PUMP> intended to pump a liquid with a small capacity. This is done by means of thin flexible diaphragms to seal pumped fluid from leakage to atmosphere; flow rate is achieved through reciprocatory motion of the diaphragm"@en ; skos:definition "[POSC Caesar] A reciprocating pump intended to pump a liquid with a small capacity. This is done by means of thin flexible diaphragms to seal pumped fluid from leakage to atmosphere."@en . :COPI_0000519 rdf:type owl:Class ; # FlexibleDiaphragm rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:label "diafragma flexível"@pt-br ; rdfs:label "flexible diaphragm"@en . # Disjointness: DiaphragmPump and CentrifugalPump [] rdf:type owl:AllDisjointClasses ; owl:members ( :COPI_0000249 :COPI_0000102 ) . # DiaphragmPump, CentrifugalPump # Disjointness: DiaphragmPump and GearPump [] rdf:type owl:AllDisjointClasses ; owl:members ( :COPI_0000249 :COPI_0000289 ) . # DiaphragmPump, GearPump
Axiomatization Decision Log
1 Identity-Giving Function
Function class
PumpingFunction ⊑ DesignedFunction
Realized in
PumpingProcess ⊑ MomentumTransfer
Diaphragm pumps share the same identity-giving function as other pumps - to move fluids by adding energy. The diaphragm mechanism is how this function is realized, not a different function class.
2 Genus Determination
ReciprocatingPump
Both definitions explicitly state that diaphragm pump is a subtype of reciprocating pump. This is the most specific appropriate superclass from the parent candidates list and it is already enriched in our ontology.
3 Necessary Parts
Part class Parent Relation
FlexibleDiaphragm MaterialArtifact hasComponentPartAtAllTimes
These parts are necessary for all diaphragm pumps regardless of actuation method (mechanical, hydraulic, pneumatic) or configuration (single, double, triple diaphragms).
4 Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfLiquid — small capacity, compatible with diaphragm sealing
Outputs (O)
PortionOfLiquid — higher pressure, sealed from atmosphere
Transformation (T)
mechanical energy transferred to liquid through diaphragm reciprocation with atmospheric sealing
Diaphragm pumps are specifically designed for small capacity liquid pumping with emphasis on preventing leakage to atmosphere, making them suitable for hazardous or precise metering applications.
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 a constructive type defined by physical mechanism. Under OWA, any pump with a flexible diaphragm component could be classified as a diaphragm pump, but there may be hybrid or specialized equipment containing diaphragms that should not be automatically classified into this maintenance category.
Disjointness Axioms
centrifugal pump gear pump
C4: gear pump. C?: centrifugal pump [kind_ambiguous]. Disjoint from centrifugal pumps due to incompatible mechanisms (reciprocating vs rotary), and from other positive displacement types that use different sealing and displacement mechanisms.
Cross-Standard Observations
Both ISO 15926 and POSC Caesar provide consistent definitions emphasizing the diaphragm mechanism and sealing function. ISO 15926 adds detail about small capacity applications and reciprocatory motion specifics.

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