Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
diaphragm pump
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: structure-based → ⊑
The concept is primarily defined by its physical mechanism - the use of flexible diaphragms to create pumping action and seal the pumped fluid. While it shares the generic pumping function, the diaphragm mechanism is the distinguishing structural feature that makes it a specific type of reciprocating pump.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
PumpingFunction → PumpingProcess ⊑ MomentumTransfer
▼
COPI-Core operation
MomentumTransfer via process parent MomentumTransfer
LLM rationale:
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.
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Expert review
2
Genus Proximus
✓ done
ReciprocatingPump · Assembly
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Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
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.
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Expert review
3
Differentia Specifica
✓ done
∃hasComponentPartAtAllTimes.FlexibleDiaphragm ⊓ ∃participatesIn.DiaphragmSealing
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Conditions that distinguish
Diaphragm Pump
from sibling classes under genus
ReciprocatingPump.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The definitions emphasize two key features: (1) the use of thin flexible diaphragms as the reciprocating element, and (2) the sealing function that prevents leakage to atmosphere. These are structural differentiating features not present in other reciprocating pump types.
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Expert review
4
Necessary Parts
✓ done
FlexibleDiaphragm
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
These parts are necessary for all diaphragm pumps regardless of actuation method (mechanical, hydraulic, pneumatic) or configuration (single, double, triple diaphragms).
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfLiquid → PortionOfLiquid
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
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.
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Expert review
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Alternative labels
none
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Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
no CFIHOS/DEXPI properties
▼
No CFIHOS/DEXPI properties found for this cluster.
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Diaphragm Pump.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
▼
Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
Source Definitions (2)
DIAPHRAGM PUMP — ClassOfInanimatePhysicalObject
Definition text hidden (copyrighted standard) — sign in to view, or follow the source link above.
Diaphragm Pump — Class
Definition text hidden (copyrighted standard) — sign in to view, or follow the source link above.
Provenance tiers (2)
Sources the pipeline cited while building this entry. Verbatim = the quote was copied word-for-word from that source; summary = paraphrased.
OWL/Turtle preview
Download .ttl
Numeric
COPI_* IRIs from copi-iri-map.tsv, with the readable name as a trailing comment. Names not yet in the map stay readable.
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ID 178 · claude-sonnet-4-20250514
Created 2026-04-16 18:11
Updated 2026-09-08 12:26
