The Yamato DP-43C is a 91 L floor-type large-capacity vacuum drying oven — the smaller of the DP43C/63C pair (91 L vs 216 L). It dries by decompressed-chamber direct heating: reducing chamber pressure to as low as 0.1 kPa (1 Torr) lowers the boiling point of moisture and solvents so they evaporate gently at low temperature. A program operation function (16 segments), a green-LED PID controller, and an integrated bottom cabinet that stores the vacuum pump make it a space-efficient floor unit. on a 220V single-phase supply, it suits large-part vacuum drying, multi-purpose bulk solvent removal, and production degassing where benchtop capacity is insufficient.
Its larger sister is DP-63C (216 L); step up further to the DP83C/104C series (512 L / 1000 L).
Key Specifications
| SKU | DP-43C |
| Type | Floor-type large-capacity vacuum drying oven, programmable |
| System | Vacuum drying by decompressed-chamber direct heating |
| Internal capacity | 91 L |
| Operating temperature range | 40 to 200 °C |
| Operating pressure range | 101 to 0.1 kPa (760 to 1 Torr) |
| Temperature control accuracy | ±1.0 °C (at 200 °C) |
| Max. temperature reaching time | ~80 min |
| Internal dimensions (W×D×H) | 450 × 450 × 450 mm |
| External dimensions (W×D×H) | 670 × 669 × 1500 mm |
| Interior material | Stainless steel |
| Exterior material | Cold-rolled steel with baked-on melamine resin finish |
| Heater | Mica heater, 2.25 kW |
| Heat-insulating material | Glass wool |
| Door | Single swing door |
| Vacuum gauge | Bourdon-tube type, 0 ~ -0.1 MPa (gauge pressure) |
| Observation window | Tempered glass + polycarbonate resin plate |
| Temperature control | PID control by microprocessor |
| Temperature sensor | K-thermocouple (double sensor) |
| Program operation | 16 segments |
| Timer | 1 min to 999 hr 50 min |
| Shelf support | 4 steps / 105 mm pitch |
| Exhaust / purge port | NW25 flange / Rc 1/4 (18 mm O.D.) |
| Shelves | 2 perforated stainless-steel shelves |
| Weight | ~190 kg |
| Voltage | 220V single phase, 11A, 50/60 Hz |
Application Profile
Large-part and bulk vacuum drying. The 91 L chamber and 450 mm-cube interior accept larger parts and bulk quantities than benchtop ovens; decompressed direct heating dries them gently at 40–200 °C under reduced pressure.
Multi-purpose solvent removal. Reduced pressure lowers solvent boiling points so residual solvents are stripped from powders, films, and assembled parts at low temperature. The 16-segment program operation runs a defined multi-step drying schedule.
Production degassing and outgassing. Deep vacuum (to 1 Torr) drives dissolved gases and volatiles out of resins, adhesives, and cast materials before curing or measurement.
Moisture-sensitive preparation at scale. Bound and surface moisture is removed from hygroscopic materials and larger assemblies before further processing, without oxidative exposure.
Space-limited labs. The vacuum pump stores in the bottom cabinet, keeping the footprint compact for a floor-standing large-capacity oven.
Design Architecture
The DP-43C dries by decompressed-chamber direct heating: a 2.25 kW mica heater warms the stainless chamber while an external vacuum pump evacuates it through the NW25 exhaust flange to as low as 0.1 kPa (1 Torr), read on a Bourdon-tube gauge (0 ~ -0.1 MPa). An improved exhaust system significantly shortens vacuum-reaching time, and the pump can be stored in the bottom cabinet with quick-connect piping for easy maintenance.
Control. A microprocessor PID controller holds setpoint to ±1.0 °C at 200 °C across the 40–200 °C range, with green-LED digital display and ▲/▼ digital setting. Operation modes include fixed-temperature, quick auto-stop, auto-stop, auto-start, and 16-segment program operation; a calendar timer and integration-time functions are included. A K-thermocouple double sensor and triac zero-cross heater control govern the heat circuit.
Chamber and viewing. The 450 × 450 × 450 mm interior provides 4 shelf-support steps at 105 mm pitch with 2 perforated stainless-steel shelves. A large tempered-glass + polycarbonate observation window with protective cover allows monitoring under vacuum.
Safety. Self-diagnostic functions (sensor, heater, triac, automatic overheating prevention), an independent overheating-prevention circuit, key-lock, and an electric-leakage breaker. Never use in a flammable or explosive gas atmosphere, and never process explosive or flammable material. High-temperature components — observe burn-hazard cautions.
Frequently Asked Questions
What is the DP-43C's chamber size and temperature range? 91 L (a 450 mm-cube interior), operating 40 to 200 °C with ±1.0 °C control accuracy at 200 °C.
How deep a vacuum can it pull? To as low as 0.1 kPa (1 Torr), across a 101 to 0.1 kPa (760 to 1 Torr) operating range.
What electrical supply does the DP-43C need? 220V single-phase, 11 A, 50/60 Hz.
Does it come with a vacuum pump? No — pair it with a pump such as the GLD202BB rotary vacuum pump (with the CA301 trap for solvents); the pump stores in the bottom cabinet.
When should I choose the DP-63C instead? Step up to the 216 L DP-63C when 91 L is short on chamber volume; the DP83C/104C series (512 L / 1000 L) covers larger loads.
Ordering & Configuration
Included: 2 perforated stainless-steel shelves.
Pair with a vacuum pump. Yamato lists the GLD202BB oil-sealed rotary vacuum pump with rubber- or SUS-hose kit (115V or 220V) and the CA301 cooling trap for solvent-laden loads. Factory-installed options include an N2 gas introduction device (30 L/min) and a vacuum-pump switch — specify at order.
Confirm electrical supply. The DP-43C is 220V single-phase, 11A. Confirm supply and circuit at order.
Plan floor space and installation. At 670 × 669 × 1500 mm external and ~190 kg, this is a floor-standing unit — confirm room access, floor loading, and service clearance at order.
Confirm application fit. Verify sample chemistry, target temperature/vacuum, batch/part size versus the 91 L chamber, and whether the 216 L DP-63C is the better capacity match.
Request a quote for pricing, vacuum-pump and cooling-trap pairing, factory-installed options, electrical/installation planning, lead time, and warranty. Warranty per Yamato standard capital-equipment terms — confirm at quote.
Yamato DP large-capacity vacuum drying oven family:
- DP-43C (this product) — 91 L, 220V
- DP-63C — 216 L, 220V
- DP-83C — 512 L, 220V
- DP-104C — 1000 L, 480V 3-phase
