Transparent basisEquations, assumptions, and units are displayed with the result.
Public BetaOpen test period: August 30–September 13, 2026. Calculations remain preliminary and require engineering review.
M&H Engineering LLC
Industrial Gas Engineering Tools
Clear inputs. Traceable results.
Free industrial gas calculators for valve sizing, gas flow, piping, pressure relief, thermal, hydrogen, and cryogenic engineering workflows.
View engineering toolsCalculation workflow01
InputOperating conditions
ModelDocumented equations
OutputEngineering result
Deterministic calculations—not generative AI outputs.Engineering tools
Start with a calculation
FLOW & CONTROL VALVES / 01–02
Open tool Gas Valve Sizing
Calculate required valve Cv from a known standard flow, or calculate available SCFM from a known Cv.
- Required Cv
- Available flow
- Choked-flow check
Engineering review requiredTools support decisions; they do not replace manufacturer or code verification.
Pricing
Free public beta
No payment, membership, or account is required during the current test period. Commercial plans will be evaluated only after validation and release controls are complete.
About us
M&H Engineering LLC
Publisher of practical, self-service industrial gas engineering tools for process, mechanical, piping, pressure-relief, hydrogen, and cryogenic systems. Each calculator displays its basis, assumptions, units, and limitations for engineering review.