# BypassValve

Config type: `"BypassValve"`  
Source: `crates/components/src/bypass_valve.rs` (or valve module)

---

## EN

### Purpose & model

Bypass leg valve with opening characteristic (linear / equal-percentage / custom). Parallel path around a component (compressor, HX, etc.).

```
ṁ = f(opening, ΔP, kv, characteristic)
h_out ≈ h_in
```

### Residuals

Flow residual + energy (isenthalpic or low Δh).

### Ports

`inlet` / `outlet`.

### Actuator

`opening` ∈ [0, 1] — free when under control.

### JSON (main)

| Key | Meaning | Default |
|-----|---------|---------|
| `opening` | 0–1 | 0–1 |
| `kv` | capacity | – |
| characteristic | linear / … | linear |

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## FR

### But

**Vanne de by-pass** sur une branche parallèle.

### Actionneur

Ouverture 0–1.

### JSON

Voir EN.