Parts for the goods of subclass 43240

1. Scope and Applicability

This PCR covers separately traded parts intended to be incorporated into, maintain, or repair taps, cocks, valves, and similar appliances for pipes, boiler shells, tanks, vats, or comparable equipment. Covered parts include pressure-retaining bodies and bonnets, stems, discs, plugs, balls, seats, and other identifiable valve or tap components supplied as finished or semi-finished market products.

Complete appliances, generic fasteners, seals, actuators, instruments, pipe fittings, unworked raw material, and manufacturing or repair services are excluded. The data package shall state the part's function, material, and completion state. A mass-based declared unit is used because the covered goods are intermediate products whose service depends on the final appliance and application.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.general-purpose-machinery.parts-for-the-goods-of-subclass-43240
classification_refs	CPC 3.0: 43254, Parts for the goods of subclass 43240
covered_products	Separately traded bodies, bonnets, stems, discs, plugs, balls, seats, and other identifiable parts for taps, cocks, valves, and similar appliances
excluded_products	Complete appliances; generic fasteners, seals, actuators, instruments, and pipe fittings; unworked raw material; installation, repair, and machining services
representative_product	Machined chromium-steel valve body or trim component supplied for downstream assembly
production_route	Purchased alloy-steel semi-finished material followed by machining; heat treatment and aqueous surface cleaning when performed; final inspection and packing
market_state	Identifiable finished or semi-finished part at the manufacturer's gate, clean and packed when packing is part of the sale

3. Reference Flow

Field	Value
What	An identifiable part providing a declared pressure-retaining, flow-control, sealing, or structural function in a tap, cock, valve, or similar appliance
How much	1 kg of finished or declared semi-finished part at the manufacturer's gate
How well	Conforming to the declared drawing/specification, material grade, dimensions and tolerances, surface condition, and applicable pressure-temperature or sealing requirements
How long or cycle	One delivered production lot; no service duration is assigned unless a downstream study documents the complete appliance life
reference_flow_link	1 kg of the declared covered part meeting all required qualifiers

Field	Value
Reference amount	1 kg
Reference product flow	Parts for the goods of subclass 43240 (Tiangong UUID unresolved)
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	part type and function; finished or semi-finished state; material grade and stock form; net product mass; drawing/specification and revision; dimensions and tolerances; pressure-temperature or sealing class when applicable; heat-treatment condition; surface treatment; production site and geography; reporting period; packaging inclusion

Every required qualifier shall be declared in metadata, process notes, the reference-flow comment, the product description, or an equivalent field. Missing qualifiers make the reference flow incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
mr_reference_mass	reference product and mass-based inventory	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use net mass of conforming covered parts at the declared market state. Exclude detachable transport fixtures and packaging from product mass.
mr_energy	electricity rows	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Record delivered electricity at the process meter; retain the source unit, conversion, and meter boundary.
mr_gas_volume	natural-gas row	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	State metering reference temperature and pressure, gas basis, and whether volume is corrected to standard conditions.
mr_normalization	all foreground amounts	row-specific property	row-specific reference unit	Normalize inputs and outputs by net mass of conforming parts from the same scope and period; retain gross production, rejects, rework, and inventory changes.

5. System Boundary

The foreground boundary begins with purchased semi-finished material and other products at the site gate and includes on-site machining, conditional heat treatment, conditional aqueous surface cleaning, final inspection, and packing through the covered part at the manufacturer's gate. Upstream production is linked through supplier or background datasets. Capital equipment, site construction, downstream distribution, installation, use, maintenance, and end of life are excluded unless the study expands the boundary.

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased chromium steel or another explicitly declared semi-finished material enters with grade, form, mass, supplier geography, and recycled-content information
starting_condition_role	Upstream product input to foreground parts manufacture
product_classification_scope	Separately traded parts for taps, cocks, valves, and similar appliances; complete appliances and generic components are outside this identity
recursive_input_rule	Record a purchased unfinished part already in this category once as a product input with a supplier dataset and completion state; do not recreate its upstream foreground manufacture
upstream_dataset_requirement	Use representative cradle-to-gate datasets for purchased material, electricity, natural gas, water, chemicals, and packaging; disclose proxies and gaps
disclosure	Declare starting material, machining, heat treatment, surface preparation, rejects/rework, wastewater and scrap destinations, packing state, exclusions, and company-specific data boundaries

rule_id	Applies to	Rule	source_ids
sb_foreground_gate	all foreground processes	Include all on-site material, energy, water, waste, and direct-emission exchanges from receipt of the declared semi-finished material through release of the covered part.	eu-pef-method-2021; us-epa-fabricated-metal-products-1995
sb_conditional_processes	heat treatment and aqueous surface cleaning	Include each conditional process only when performed; disclose its technology and add every actual atomic exchange crossing its boundary.	us-epa-fabricated-metal-products-1995
sb_exclusions	excluded stages	Document and justify exclusions; do not silently exclude rejects, rework, scrap, cleaning wastewater, or direct combustion emissions.	eu-pef-method-2021

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
p_primary_machining	Primary machining of alloy-steel part	conditional	Include when the covered part is produced by machining chromium steel or another declared metal semi-finished input	Foreground material shaping	kg of conforming machined part
p_heat_treatment	Heat treatment	conditional	Include when controlled heating and cooling changes the material condition	Foreground property modification	kg of heat-treated part
p_aqueous_cleaning	Aqueous surface cleaning	conditional	Include when alkaline aqueous cleaning and rinsing are performed on-site	Foreground surface preparation	kg of cleaned part
p_final_release	Final inspection and packing	required	Always include final conformity release; include the box row only when boxes are part of the sale	Foreground release of reference product	1 kg of conforming covered part

Process: Primary machining of alloy-steel part (p_primary_machining)

Inputs

Product flows

Chromium-steel semi-finished material (chromium_steel_input)

Record this input only for the chromium-steel route; other material routes shall use separately identified atomic material flows.

• Selected flow: Chromium steel f4f19250-c683-4ff0-9763-1498069df9de
• Flow property / unit: Mass / kg
• Amount rule: purchased mass entering machining, adjusted for opening and closing inventory
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming covered part from the same production scope
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_machining_records
• Sources: us-epa-fabricated-metal-products-1995

Electricity delivered to machining (machining_electricity)

Record metered electricity used by machine tools and directly attributable auxiliary equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: metered or allocated delivered electricity for machining
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of conforming covered part from the same production scope
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_machining_records
• Sources: us-epa-fabricated-metal-products-1995

Cutting fluid supplied to machining (cutting_fluid_input)

Record purchased make-up cutting fluid; keep recovered recirculating inventory distinct.

• Selected flow: Cutting Fluid 576d250f-4f36-4385-939d-0f03b8f95a10
• Flow property / unit: Mass / kg
• Amount rule: purchased make-up mass consumed after inventory adjustment
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of conforming covered part from the same production scope
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_machining_records
• Sources: us-epa-fabricated-metal-products-1995

Process water supplied to machining (machining_process_water)

Record water used for water-miscible cutting fluid or direct machining when it crosses this boundary.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: metered or batch-recorded water mass attributable to machining
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of conforming covered part from the same production scope
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_machining_records
• Sources: us-epa-fabricated-metal-products-1995

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Steel scrap generated by machining (steel_scrap_from_machining)

Record chips, turnings, and offcuts leaving machining; state alloy grade, oil contamination, and destination.

• Selected flow: Steel scrap from machining a88e0790-436c-44f8-b336-ee509aa8a38a
• Flow property / unit: Mass / kg
• Amount rule: measured scrap dispatched or transferred to treatment, adjusted for scrap inventory
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming covered part from the same production scope
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_machining_records
• Sources: us-epa-fabricated-metal-products-1995

Elementary flows

Process: Heat treatment (p_heat_treatment)

Inputs

Product flows

Natural gas supplied to the furnace (heat_treatment_natural_gas)

Record gaseous natural gas only for directly fired or gas-heated equipment.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume / m3
• Amount rule: corrected metered natural-gas volume attributable to heat treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of heat-treated covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_treatment_records
• Sources: us-epa-fabricated-metal-products-1995

Electricity delivered to heat treatment (heat_treatment_electricity)

Record furnace and directly attributable auxiliary electricity.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: metered or allocated delivered electricity for heat treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of heat-treated covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_treatment_records
• Sources: us-epa-fabricated-metal-products-1995

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Direct fossil carbon dioxide (heat_treatment_fossil_co2)

Record only direct on-site fossil carbon dioxide from natural-gas combustion; exclude upstream electricity emissions.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: monitored site emission mass attributable to heat treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of heat-treated covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_treatment_records
• Sources: us-epa-fabricated-metal-products-1995

Process: Aqueous surface cleaning (p_aqueous_cleaning)

Inputs

Product flows

Sodium hydroxide used in alkaline cleaning (cleaning_sodium_hydroxide)

Record supplied sodium-hydroxide mass only when present; retain solution concentration separately.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass / kg
• Amount rule: purchased sodium-hydroxide mass in cleaning make-up
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of cleaned covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_cleaning_records
• Sources: us-epa-fabricated-metal-products-1995

Process water used for cleaning and rinsing (cleaning_process_water)

Record metered water crossing the cleaning boundary for bath make-up and rinsing.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: metered water mass attributable to cleaning and rinsing
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg of cleaned covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_cleaning_records
• Sources: us-epa-fabricated-metal-products-1995

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Wastewater from cleaning (cleaning_wastewater)

Record cleaning and rinse wastewater leaving for on-site or off-site treatment; disclose composition and destination.

• Selected flow: Wastewater from cleaning f0402393-e82c-47e8-9cd8-a486c97f3e89
• Flow property / unit: Mass / kg
• Amount rule: measured wastewater mass leaving cleaning, adjusted for storage changes
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per kg of cleaned covered part
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_cleaning_records
• Sources: us-epa-fabricated-metal-products-1995

Elementary flows

Process: Final inspection and packing (p_final_release)

Inputs

Product flows

Corrugated board boxes used for shipment (corrugated_board_boxes)

Record boxes included in the sale or needed for the declared factory-gate state.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: issued box mass less returned unused boxes, allocated to released parts
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg of conforming covered part released
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_release_records

Waste flows

Elementary flows

Outputs

Product flows

Finished covered valve part (finished_valve_part)

This is the reference product after conformity release. Its exact Tiangong product-flow UUID remains unresolved.

• Selected flow: Parts for the goods of subclass 43240 (Tiangong UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: fixed reference amount of 1 kg of conforming covered part
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: 1 kg reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Method formula (method_formula)
• Sources: un-cpc-3-0-structure-2025; eu-pef-method-2021

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
al_subdivision_first	shared machines, lines, and utilities	Avoid allocation by separately metering batches, machines, or stages attributable to covered parts.	eu-pef-method-2021
al_physical_relationship	inseparable shared foreground processes	If subdivision is impracticable, use a documented causal physical driver such as machine time, load-adjusted furnace occupancy, metered energy, or treated surface area.	eu-pef-method-2021
al_other_relationship	remaining multifunctional processes	Use another relationship, including economic allocation, only when no defensible physical relationship exists; disclose values, period, sensitivity, and affected flows.	eu-pef-method-2021
al_scrap_disclosure	steel scrap and recycling	Record scrap as waste without netting it against metal input or energy. Model recycling burdens and credits consistently downstream and disclose the convention.	eu-pef-method-2021

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_machining_records	p_primary_machining	chromium steel, electricity, cutting fluid, process water, steel scrap	purchase/issue records, meters, scrap tickets, production log	inventories; purchases/issues; meter readings; scrap mass; conforming mass; rejects; rework; identifiers	Reconcile records to the same machines, lots, and period	kg; MJ	Per batch where available and at least monthly	Representative continuous 12-month period or justified shorter campaign	All attributable on-site machining	Sum net inputs/outputs, allocate shared resources, divide by conforming mass	calibrated meters/scales, invoices, batch travellers, scrap tickets, reconciliation sign-off
cp_heat_treatment_records	p_heat_treatment	natural gas, electricity, fossil carbon dioxide	meters, furnace logs, emissions records, production log	corrected gas volume; electricity; monitored CO2; furnace; recipe; load; output mass	Match meters or allocation to furnace batches and technology	m3; MJ; kg	Per batch or meter interval and at least monthly	Representative continuous 12-month period or justified shorter campaign	On-site heat treatment	Sum attributable records and divide by heat-treated conforming mass	calibration, reference-condition record, furnace log, emissions monitoring record
cp_cleaning_records	p_aqueous_cleaning	sodium hydroxide, water, cleaning wastewater	chemical issues, meters, bath logs, production log	chemical mass/concentration; water; wastewater; bath inventory; treated mass; destination	Reconcile make-up, rinse water, wastewater, inventories, and output	kg	Per batch or meter interval and at least monthly	Representative continuous 12-month period or justified shorter campaign	On-site aqueous cleaning	Sum net inputs and wastewater, divide by cleaned conforming mass	invoices, calibrated meters/scales, bath analyses, transfer manifests, mass-balance review
cp_release_records	p_final_release	corrugated boxes and finished part	packaging issues and final inspection/production records	boxes issued/returned; box mass; conforming mass; rejects; rework; part/specification revision	Link packaging and release records to the same order or period	kg	Per order or batch and at least monthly	Representative continuous 12-month period or justified shorter campaign	Final release and packing	Divide net box mass by conforming mass; set reference output to 1 kg	scale checks, packaging specification, inspection release, production reconciliation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
cr_net_consumption	purchased products	Net consumption = purchases or issues + opening inventory - closing inventory - documented returns	transactions and inventories for one scope and period	net boundary-crossing quantity	eu-pef-method-2021
cr_reference_normalization	variable inventory rows	Normalized amount = attributable net quantity / net conforming-part mass for the same scope and period	net quantity, conforming mass, allocation driver if needed	amount per kg reference flow or process output	eu-pef-method-2021
cr_scrap_reconciliation	machining material balance	Reconcile metal input with conforming output, scrap, rejects, rework transfers, and inventory changes; investigate unexplained imbalance.	metal input, output, scrap, rejects, rework, inventories	documented mass balance and residual	us-epa-fabricated-metal-products-1995

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	reference product and material	Preserve part number, drawing/specification revision, function, grade, stock form, treatment state, and completion state.	product specification, certificate of conformity, material certificate, release record
dq_scope	foreground processes	Use the same site, technology, products, and period for inputs and outputs; document outsourced steps and upstream datasets.	process map, boundary statement, supplier records, period reconciliation
dq_measurement	meters and mass records	Retain calibration, unit conversions, meter coverage, estimation method, and allocation driver.	calibration certificates, meter register, conversion worksheet, allocation record
dq_temporal	foreground data	Prefer a continuous 12-month period; justify shorter campaigns and disclose shutdowns, abnormal batches, and utilization.	dated production, purchase, utility, and waste records
dq_completeness	inventory	Reconcile metal, water when cleaning is used, and process outputs; report missing exchanges and likely significance.	signed mass-balance and completeness review

9. Validation Rules

rule_id	Applies to	Rule	source_ids
vr_identity_complete	reference flow	Fail when a required qualifier, reference mass, market state, or drawing/specification identity is missing.	un-cpc-3-0-structure-2025; eu-pef-method-2021
vr_inventory_atomic	process inventory	Fail when a row combines multiple materials, utilities, packaging components, wastes, or emissions, or uses an umbrella route selector.	us-epa-fabricated-metal-products-1995
vr_period_reconciliation	variable amounts	Fail when quantities lack a common site, process scope, and period or omit inventory changes and rework.	eu-pef-method-2021
vr_uuid_semantics	UUID-bearing flows	Confirm public state, bilingual names, flow type, classification, property, unit group, and qualifiers; never replace the unresolved reference product with a proxy.
vr_boundary_disclosure	system boundary	Fail when an applicable machining, heat-treatment, cleaning, reject, wastewater, scrap, packaging, or direct-emission process is omitted without justification.	eu-pef-method-2021; us-epa-fabricated-metal-products-1995

10. Published Dataset Profile

Field	Value
dataset_role	foreground production dataset publishable as a secondary_dataset or background_dataset after review
downstream_use	process and lifecyclemodel projections for manufacture of separately traded parts for taps, cocks, valves, and similar appliances
allowed_use	Studies matching declared function, material, completion state, technology, geography, period, boundary, and allocation
excluded_use	Complete appliances; generic metal products; parts with materially different functions, materials, or routes; unsupported comparative assertions
required_metadata	PCR id/version; part and drawing/specification identity; function; material/treatment; market state; reference mass; site/geography; technology; period; process map; allocation; upstream datasets; packaging state
required_quality_disclosure	foreground coverage; measured versus allocated data; calibration/conversions; temporal representativeness; mass-balance residuals; rejects/rework; missing exchanges; proxies; uncertainty and range-evidence gaps
update_trigger	Material change in function, grade, completion state, machining route, heat treatment, cleaning chemistry, site, energy supply, allocation, packaging, supplier datasets, or period

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	United Nations Statistics Division, CPC Version 3.0 Structure, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-05)	Official identity of CPC 43254 and its parent goods in subclass 43240
us-epa-fabricated-metal-products-1995	official_guidance	U.S. EPA, Profile of the Fabricated Metal Products Industry, EPA/310-R-95-007, September 1995, https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=50000DGC.TXT (retrieved 2026-09-05)	Metal fabrication, machining, heat treatment, surface preparation, inputs, and waste-output decomposition
eu-pef-method-2021	official_guidance	Commission Recommendation (EU) 2021/2279, Annexes I-II, consolidated 30 December 2021, https://eur-lex.europa.eu/eli/reco/2021/2279/2021-12-30/eng (retrieved 2026-09-05)	Functional unit/reference flow, boundary disclosure, company-specific data, allocation, validation, and quality rules