Engineering unit converter 工程单位换算
Pressure, length, temperature, flow, torque and Cv↔Kv — the conversions that come up every day when a datasheet arrives in different units from your own.
压力、长度、温度、流量、扭矩以及 Cv/Kv 互换：datasheet 单位不一致时最常用的几类换算。
Conversions use standard definition values. Pipe schedules, flange dimensions or class ratings? Ask us — send the size and standard and we will confirm against the actual product drawing.
How to use it / 使用说明： 单位换算使用说明 — Which conversions cause ordering mistakes: gauge vs absolute, Nm3 vs Sm3, Cv vs Kv.
换算结果 Results
换算系数为标准定义值。压力按 1 bar = 14.5038 psi、1 MPa = 145.038 psi；Cv ↔ Kv：Kv = 0.865 × Cv（水，m³/h @ 1 bar）。
Looking for a valve with a specific Cv or Kv? Use the Cv/Kv calculator or send the duty to websale@sawye.com.