Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
block and bleed valve
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: structure-based → ⊑
This concept is defined by its physical configuration: having one seat for sealing and a bleeder line/valve tapped into the bonnet. The identity is given by this specific structural arrangement, not by a unique function distinguishable from other valves.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
Loading…
Disjoint with
▸
Expert review
— accepted
Axiomatization steps
1
Identity-Giving Function
✓ done
FlowControlFunction → FlowControlProcess ⊑ FlowControl
▼
COPI-Core operation
FlowControl via process parent FlowControl
LLM rationale:
A block and bleed valve shares the same identity-giving function as all valves - controlling flow. The blocking and bleeding capabilities are realized through its structural configuration, not through a distinct function type.
▸
Expert review
— accepted
2
Genus Proximus
✓ done
Valve · MaterialArtifact
▼
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:
Block and bleed valve is clearly a specialized type of valve. The parent candidates include 'manual valve' which is enriched, but 'Valve' is the more appropriate direct superclass since block and bleed valves can be manual or actuated. Both ISO 15926 and the functional definition confirm this is a valve subtype.
▸
Expert review
— accepted
3
Differentia Specifica
✓ done
∃hasComponentPartAtAllTimes.SingleSeat ⊓ ∃hasComponentPartAtAllTimes.BleederLine ⊓ ∃hasComponentPartAtAllTimes.BleederValve
▼
Conditions that distinguish
Block And Bleed Valve
from sibling classes under genus
Valve.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The defining structural characteristics are the single seat design and the integrated bleeder system. This differentiates it from other valve types that either lack bleeding capability or have different seat configurations.
▸
Expert review
— accepted
4
Necessary Parts
✓ done
no necessary parts
▼
Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
These three components are constitutive of the block and bleed valve design. The single seat provides the blocking function, while the bleeder line and valve enable safe venting of downstream pressure.
▸
Expert review
— accepted
5
Process Participation Signature ⟨I, O, T⟩
✓ done
PortionOfFluid → PortionOfFluid + PortionOfFluid
▼
Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
The valve can isolate flow (block function) while simultaneously allowing controlled release of downstream pressure through the bleeder system. This creates two output streams when bleeding.
▸
Expert review
More
Alternative labels
none
▼
Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
0 of 18 selected
▼
Select which CFIHOS/DEXPI properties inhere in every instance of Block And Bleed Valve as
bfo:Quality subclasses.
Each selected property →
:BlockAndBleedValveQuality ⊑ bfo:Quality, inheres in :BlockAndBleedValve
Custom axioms
none
▼
Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Block And Bleed Valve.
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)
BLOCK AND BLEED VALVE — ClassOfInanimatePhysicalObject
Definition text hidden (copyrighted standard) — sign in to view, or follow the source link above.
cfihos V2.0
block and bleed valve — TagAndEquipmentClass
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.
Linked competency questions
- answered What distinguishes a block-and-bleed valve from a double-block-and-bleed valve?
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.
Loading...
ID 160 · claude-sonnet-4-20250514
Created 2026-04-16 18:11
Updated 2026-09-08 12:26
