Crystallizer Valve Types
// Click any valve to drill down — 5 valve types, one crystallizer system
01 — FILL VALVE
Butterfly Valve
Spring-return pneumatic
02 — DROP VALVE
Gate / Slide Valve
Double-acting pneumatic
03 — DIVERT VALVE
3-Way Ball Valve
Rotary pneumatic actuator
05 — CONTROL VALVE
Globe / Butterfly
Modulating — I/P positioner
04 — ISOLATION
Manual Ball Valve
Handwheel operated
// SIDE-BY-SIDE COMPARISON — ALL 5 VALVES
| Valve | Type | Actuator | Signal | Fail Position | Controls |
|---|---|---|---|---|---|
| 01 Fill | Butterfly | Spring-return pneumatic | 120VAC on/off | CLOSED | Dextrose flowing IN |
| 02 Drop | Gate/Slide | Double-acting pneumatic | 120VAC on/off | NONE — holds last pos | Crystals discharging OUT |
| 03 Divert | 3-Way Ball | Spring-return rotary | 120VAC on/off | PATH A (de-energized) | Routes flow to A or B crystallizer |
| 04 Isolation | Ball Valve | Manual handwheel | None — manual | LOCKED OPEN (normal op) | LOTO isolation for maintenance |
| 05 Control | Globe/Butterfly | Spring-return + I/P positioner | 4–20mA analog | CLOSED (spring) | Throttles flow rate |