Flow & Pressure Drop Calculations

Any site with MGPS should understand the flow requirements and possible pressure restrictions within the system. HTM02-01 medical gas flow and pressure drop calculations will confirm required demand, identify pipeline restrictions, and understand any limitations that could affect the quantity of supply to the patient.​

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What These Calculations Assess

Our flow and pressure drop calculations are used to evaluate how the MGPS performs under expected and peak demand conditions, supporting both operational assurance and risk planning.

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They focus on understanding whether the system can deliver required flows and pressures reliably across all connected areas to ensure the patient receives the quantity of supply required.

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Flow Calculations HTM02-01

Flow calculations are calculated based on HTM02-01 for every clinical area and added to the system requirements, this can be shown on calculation tables or any of our drawing packages.

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They help to:

• Determine total and localised medical gas demand

• Compare HTM02-01 diversified flows to your average continuous demand

• Confirm adequacy of supply systems 

• Support planning for new outlets, departments, or extensions

• Identify areas where demand may exceed original design intent

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These calculations provide a structured basis for capacity planning and upgrade decisions.

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​Pressure Drop Calculations

Pressure drop calculations evaluate losses through the pipeline system to ensure delivery pressures remain within acceptable limits.

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They consider:

• Pipe sizes & Lengths

• Pressure of gas 

• Fittings & valves factor

• Cumulative losses across branches and zones

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This analysis helps confirm that clinical areas receive sufficient pressure during normal and peak operation.

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​When Flow & Pressure Drop Calculations Are Most Useful

• If there is no understanding of current site restrictions and capabilities

• Refurbishments or reconfiguration of clinical areas

• Extensions to existing MGPS networks

• Adding outlets, equipment, or high-demand areas

• Investigating low pressure or performance concerns

• Assessing legacy systems against current operational demand

• Supporting design validation and decision-making

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How the Calculations Are Produced

• Based on verified system information and layout data

• Carried out using HTM02-01 pressure drop calculation information

• Assumptions clearly defined and documented

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Where required, findings can be used to inform design changes, mitigation measures, or further technical review.

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What You Get

• Clear understanding of system capacity and limitations

• Confidence that demand can be met safely and reliably

• Evidence to support refurbishment and extension decisions

• Reduced risk of pressure-related performance issues