Environmental Product Declaration
1/2 B911S-M3 - Backflow Preventers
by Watts
Environmental Product Declaration (EPD) for 1/2 B911S-M3 - Backflow Preventers, manufactured by Watts. Declaration SmartEPD-2024-023-0132-01, prepared according to Part B: Kitchen and Bath Fixture Fittings and Accessory Products, valid until May 23, 2029.
- Functional unit
- 1 packaged product
- Valid until
- May 23, 2029
- PCR
- Part B: Kitchen and Bath Fixture Fittings and Accessory Products
Declaration details
- Manufacturer
- Watts
- Program operator
- Smart EPD
- Declaration number
- SmartEPD-2024-023-0132-01
- Date of issue
- May 23, 2024
- Valid until
- May 23, 2029
- Product category rules (PCR)
- Part B: Kitchen and Bath Fixture Fittings and Accessory Products (version 1)
- Standard
- ISO 14025:2006 and ISO 21930:2017
- Functional unit
- 1 packaged product
- System boundary
- Cradle to grave (A1 - A3, A4, A5, B1 - B7, C1 - C4)
- Product specificity
- Product Specific
- Manufacturing specificity
- Facility Specific
- Manufacturing plant
- Franklin Manufacturing Plant (583 S Main St, Franklin, NH 03235, USA)
- Product category
- Plumbing › PlumbingEquipment
- Product SKU
- 0386462
- Product service life
- 20 years
- Verifier
- Gaspard Philis, LCA.no
- LCA software
- SimaPro 9.5
- Program instructions
- Smart EPD General Program Instructions v.1.0, November 2022
Life cycle assessment results
Results per 1 packaged product.
Environmental Impact Assessment Results
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GWP-total | kg CO2 eq | 3.33e+1 | 9.52e-1 | 5.37e-2 | 0 | 0 | 2.71e-1 | 9.61e+1 | 0 | 0 | 0 | 0 | 3.37e-2 | 0 | 0 |
| GWP-total | kg CO2 eq | 3.28e+1 | 9.39e-1 | 4.47e-2 | 0 | 0 | 2.42e-1 | 9.47e+1 | 0 | 0 | 0 | 0 | 3.33e-2 | 0 | 0 |
| ODP | kg CFC 11 eq | 5.52e-7 | 1.57e-8 | 9.15e-11 | 0 | 0 | 5.86e-9 | 1.59e-6 | 0 | 0 | 0 | 0 | 5.58e-10 | 0 | 0 |
| AP | kg SO2 eq | 1.14e+0 | 5.74e-3 | 3.30e-5 | 0 | 0 | 5.79e-4 | 3.22e+0 | 0 | 0 | 0 | 0 | 1.81e-4 | 0 | 0 |
| EP-fw | kg N eq | 8.75e-1 | 9.78e-4 | 2.43e-4 | 0 | 0 | 1.26e-3 | 2.45e+0 | 0 | 0 | 0 | 0 | 3.44e-5 | 0 | 0 |
| POCP | kg O3 eq | 4.85e+0 | 1.53e-1 | 7.58e-4 | 0 | 0 | 8.74e-3 | 1.40e+1 | 0 | 0 | 0 | 0 | 5.07e-3 | 0 | 0 |
Resource Use Indicators
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PERE | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| PERM | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| PERT | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| PENRE | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| PENRM | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| PENRT | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| RPRE | MJ | 8.77e+1 | 1.67e-1 | 1.49e-3 | 0 | 0 | 1.33e+0 | 2.46e+2 | 0 | 0 | 0 | 0 | 6.03e-3 | 0 | 0 |
| RPRM | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| RPRT | MJ | 8.77e+1 | 1.67e-1 | 1.49e-3 | 0 | 0 | 1.33e+0 | 2.46e+2 | 0 | 0 | 0 | 0 | 6.03e-3 | 0 | 0 |
| NRPRE | MJ | 4.92e+2 | 1.43e+1 | 7.56e-2 | 0 | 0 | 1.80e+0 | 1.42e+3 | 0 | 0 | 0 | 0 | 5.08e-1 | 0 | 0 |
| NRPRM | MJ | 3.20e+0 | 0 | 0 | 0 | 0 | 0 | 8.96e+0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| NRPRT | MJ | 4.95e+2 | 1.43e+1 | 7.56e-2 | 0 | 0 | 1.80e+0 | 1.43e+3 | 0 | 0 | 0 | 0 | 5.08e-1 | 0 | 0 |
| ADP-fossil | MJ | 3.97e+1 | 1.88e+0 | 9.58e-3 | 0 | 0 | 1.89e-1 | 1.17e+2 | 0 | 0 | 0 | 0 | 6.70e-2 | 0 | 0 |
| SM | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| RSF | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| NRSF | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| FW | m3 | 4.03e-4 | 0 | 0 | 0 | 0 | 0 | 1.13e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Waste and Output Flow Indicators
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HWD | kg | 1.72e-1 | 0 | 0 | 0 | 0 | 0 | 4.81e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| NHWD | kg | 3.43e-2 | 0 | 1.30e-1 | 0 | 0 | 0 | 3.51e+0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.09e+0 |
| RWD | kg | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| HLRW | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ILLRW | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CRU | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MFR | kg | 8.04e-1 | 0 | 0 | 0 | 0 | 0 | 2.25e+0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MER | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MNER | kg | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
| EEE | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| EET | MJ | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Carbon Emissions and Removals
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BCRP | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEP | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCRK | kg CO2 | -2.37e-1 | 0 | 0 | 0 | 0 | -1.74e-1 | -6.65e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEK | kg CO2 | 0 | 0 | 1.92e-1 | 0 | 0 | 4.35e-2 | 5.37e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEW | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CCE | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CCR | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CWNR | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ND = not declared. Life cycle modules: A1-A3 product stage, A4-A5 construction process, B use stage, C end of life, D benefits and loads beyond the system boundary.
Material composition
| Material/Component Category | Origin | % Mass |
|---|---|---|
| Body_Bronze | US | 43 |
| Spider_Stainless Steel | TW | 9 |
| Adapter_Brass | CN | 9 |
| Spider_Brass | TW | 8 |
| Washer_Stainless Steel | US | 6 |
| Spring Cage_Aluminium | CN | 4 |
| Tailpiece_Brass | US | 3 |
| Union Nut_Brass | CN | 2 |
| Nut_Brass | CN | 2 |
| Stem_Steel | US | 2 |
| Strainer_Stainless Steel | US | 2 |
| Tailpiece_Stainless Steel | CN | 2 |
| Seat_Brass | US | 2 |
| Disc_EPDM | CN | 1 |
| Seal Cap_Brass | CN | 1 |
| Retainer Ring_Stainless Steel | US | 1 |
| Plate_Stainless Steel | US | 1 |
| Seat_Rubber | CN | 1 |
| Packaging material | Origin | Mass (kg) |
|---|---|---|
| Paper | GLO | 0.13 |
| Biogenic carbon content | kg C per packaged product |
|---|---|
| Biogenic carbon content in product | 0 |
| Biogenic carbon content in accompanying packaging | 0.065 |
Hazardous substances
No regulated hazardous or dangerous substances are included in this product.
Scenarios
Transport to the building site (A4)
- Fuel type
- Diesel
- Vehicle type
- 16-32 metric ton, EURO3 Truck
- Transport distance
- 2700 km
- Capacity utilization
- 37%
- Weight of products transported
- 2.7 kg
- Packaging mass
- 0.3 kg
End of life (C1-C4)
- Collected separately
- 1.09 kg
- Recycling
- 1.09 kg
Product description
Backflow preventors prevent the flow of harmful materials and substances from entering back into the potable water supply. This 1/2 inch bronze combination fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, in one pre-assembled unit.
Interpretation
The analysis of Watts valve products provides useful insights regarding the cradle-to-grave environmental impacts. The LCA results also identify where substantial impacts are occurring to allow further process and materials improvements to be implemented by Watts. The cradle-to-grave impacts for all products are dominated by the B4 replacement phase as ~2.8 declared units are needed to reach the 75 year building lifespan per the PCR requirement. This stage typically accounts for ~70% of the impacts throughout the products' lifecycle. After this the second largest contributor is the A1 Raw Materials Extraction and Processing stage. This stage accounts for ~10-20% of the lifecycle impacts. The A3 Manufacturing stage accounts for 5-10% of the impacts, with the other stages accounting for <1%.
LCIA results are relative expressions and do not predict impacts on category endpoints, the exceeding of thresholds, safety margins or risks. EPDs are comparable only when they follow the same PCR, functional unit and system boundary. The full EPD (PDF) contains the methodology, scenario assumptions and verification statement.