Valves
Devices that start, stop, regulate, or throttle flow in a piping system. Each valve type has characteristic loss coefficients and pressure ratings, contributing to the system head curve through minor losses.
Engineering Application
Isolation, control, check, and pressure-relief functions in water and process systems. Minor losses are typically added to the system curve using loss coefficient (K) or equivalent length methods so the duty point and pump duty reflect the full installed system.
Key Parameters
| Parameter | Unit |
|---|---|
| Flow coefficient (K / Cv) | — |
| Pressure rating | bar |
| Size / connection | mm |
Related Engineering Tools
Pump Power Calculator
Calculate hydraulic power, shaft power, and motor electrical power from head and flow rate.
HPump = ρ × g × Q × H / η Pipe Flow & Friction Loss Calculator
Determine pipe velocity, friction head loss, and pressure drop via Darcy-Weisbach or Hazen-Williams.
v = Q / A · hf = 10.67 × L × Q^1.852 / (C^1.852 × D^4.871) Pipe Flow Velocity & Sizing Calculator
Size a pipe to carry a target flow within a recommended velocity range, or check velocity for a given diameter.
D = √(4Q / (π·v)) · v = Q / A Pipe Pressure Drop (Darcy–Weisbach) Calculator
Compute pipe head loss and pressure drop with the Darcy–Weisbach equation, solving the Colebrook friction factor.
hf = f × (L/D) × (v²/2g) · f via Colebrook-White