Plumbing Gas Regulator Capacity Calculator
Read independently verified same-gas/outlet-pressure regulator capacity curve at actual absolute inlet pressure; no standard/actual volume conflation, setting procedure or gas safety approval.
Description
Regulator capacity varies with absolute inlet pressure under matched gas and outlet conditions.
Regulator capacity varies with absolute inlet pressure under matched gas and outlet conditions. A verified calibration supports in-range interpolation.1
The returned values include Caller interpolated regulator capacity m3 hour, Signed regulator capacity margin m3 hour. The How section below explains the calculation, input rules and interpretation.
When to use Plumbing Gas Regulator Capacity Calculator
Use Plumbing Gas Regulator Capacity Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No extrapolation, standard/actual volume conversion, setting procedure or gas safety approval is supplied.
Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.
How to use Plumbing Gas Regulator Capacity Calculator and understand its results
- Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.
- Enter callerMatchedRegulatorInletAbsoluteKpaKnots, callerVerifiedMatchedCapacityM3HourKnots, observedRegulatorInletAbsoluteKpa, observedGasDemandM3Hour using the field table and calculation rules, then run the tool.
- Read callerInterpolatedRegulatorCapacityM3Hour, signedRegulatorCapacityMarginM3Hour. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| callerMatchedRegulatorInletAbsoluteKpaKnots | Caller matched regulator inlet absolute kpa knots | list of number | Required |
| callerVerifiedMatchedCapacityM3HourKnots | Caller verified matched capacity m3 hour knots | list of number | Required |
| observedRegulatorInletAbsoluteKpa | Observed regulator inlet absolute kpa | number | Required |
| observedGasDemandM3Hour | Observed gas demand m3 hour | number | Required |
Enter aligned nonempty positive pressure knots with at least two strictly increasing entries, nonnegative capacities, positive query pressure within their inclusive range and nonnegative demand. Return interpolated capacity and signed margin.
capacity=linearInterpolation(pressureKnots,capacityKnots,inlet); margin=capacity−demand Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| callerInterpolatedRegulatorCapacityM3Hour | Caller interpolated regulator capacity m3 hour | number |
| signedRegulatorCapacityMarginM3Hour | Signed regulator capacity margin m3 hour | number |
{
"input": {
"callerMatchedRegulatorInletAbsoluteKpaKnots": [
200,
300,
400
],
"callerVerifiedMatchedCapacityM3HourKnots": [
10,
20,
30
],
"observedRegulatorInletAbsoluteKpa": 250,
"observedGasDemandM3Hour": 12
},
"output": {
"callerInterpolatedRegulatorCapacityM3Hour": 15,
"signedRegulatorCapacityMarginM3Hour": 3
}
}Limitations and assumptions
No extrapolation, standard/actual volume conversion, setting procedure or gas safety approval is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Plumbing Gas Pipe Sizing Low Pressure Calculator: Low-pressure gas-pipe capacity must match gas, length and inlet conditions. Catalog selection compares flow demand directly. For a complementary task, use Plumbing Gas Pipe Pressure Drop Calculator: Measured gas-route pressure drops add before subtraction from absolute upstream pressure. Absolute downstream pressure must remain positive.
References
Similar or alternative tools
- Plumbing Gas Pipe Sizing Low Pressure Calculator
Low-pressure gas-pipe capacity must match gas, length and inlet conditions. Catalog selection compares flow demand directly.
- Plumbing Gas Pipe Pressure Drop Calculator
Measured gas-route pressure drops add before subtraction from absolute upstream pressure. Absolute downstream pressure must remain positive.