Tools

Engineering tools that make the spec easier.

Quick calculators our team reaches for every day — valve sizing, line velocity, unit conversions. Free to use; when you're ready, we'll help turn the numbers into the right product.

Liquid valve Cv

Required flow coefficient for a liquid control valve

Flow rateGPM

Pressure drop ΔPpsi

Specific gravity

—required Cv

Cv = Q √(SG/ΔP), for turbulent, non-choked liquid flow. For flashing, cavitating, or compressible service, confirm with the manufacturer's sizing.

Pipe velocity

Liquid velocity in a round pipe

Flow rateGPM

Inside diameterin

—ft/s

v = 0.4085 × Q/d². (2.067 in = Sch 40 2″ ID.) Keep liquids ~3–10 ft/s to limit erosion and water hammer.

Pressure converter

Convert between common pressure units

Value

Temperature converter

°F · °C · K

Value

Flow converter

Volumetric flow units

Value

Estimates for convenience — they don't replace manufacturer sizing software or a stamped design. Working a specific application? Talk to a Rust engineer.