ValveDyn Pro

ValveDyn Pro is an engineering tool for reciprocating compressor valves. It simulates how the valve actually moves over a full crank revolution and tells you whether a design will last — and why.

VALVE DYNAMICS, NOT A SINGLE-POINT CHECK
• RK4 ODE simulation of the valve plate or rings: lift, bounce count, impact velocity and open fraction for suction and discharge, head end and crank end
• Valve losses, capacity and P–V indicator diagram with indicated work and pressure drops
• Plate, ring, multi-ring and poppet valve types

A HEALTH SCORE YOU CAN TAKE APART
• A score out of 120 built from gas velocity, valve loss, bounce, flutter, impact velocity and sealing
• Each check listed against its source and limit: API 618 gas velocity, Frenkel flow-area and lift criteria, spring and ring stresses — including the checks that fail
• Estimated service life and recommended ring and plate materials

OPTIMIZER
• Sweeps lift, spring rate, ring or plate mass, preload and slot width
• Ranks thousands of candidates, shows the distribution and the Pareto trade-offs, and flags when no feasible design exists and which constraint blocks it
• Optimize one stage or all stages of a multi-stage machine

MULTI-STAGE MACHINES AND REAL GAS
• Machines with several stages: interstage conditions, intercooling and total power
• Gas mixtures with Peng-Robinson or AGA-8 properties: Z-factor, real k, density

REPORTS AND FILES
• Client-ready PDF reports with parameters, per-stage performance and health scores
• Project files (.vdp) open from Files, AirDrop and iCloud Drive, and are fully compatible with ValveDyn Pro for Mac
• Built-in formula reference

SUBSCRIPTION
ValveDyn Pro is free to download. Without a subscription you can open, edit and share projects. Calculations, the optimizer, multi-stage analysis and PDF export require ValveDyn Pro — Yearly, an auto-renewable subscription with a one-month free trial for new subscribers. You confirm the purchase when you start the trial; your Apple Account is charged when the trial ends. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; you can manage or cancel it in your Apple Account settings.
Customers with a ValveDyn Pro licence key from Kaydani Compressor Engineering can enter it in the app instead.

Results are engineering aids and must be verified by a qualified engineer before they are applied to equipment.

Terms of Use (EULA): https://www.kaydani-ce.com/legal/ValveDynPro-EULA.pdf
Privacy Policy: https://www.kaydani-ce.com/privacy.html