Electronic Expansion Valves(EEVs) for HVAC/R

Electronic expansion valves (EEVs) from the DPF-AA/AB series are designed for modern HVAC/R applications. With stepper-motor precision control, they modulate refrigerant flow quickly and keep superheat stable, improving efficiency and reliability under varying loads. The compact, lightweight body fits tight spaces and works with a broad range of refrigerants (R22, R410A, R407C, R32, R134a, R404A, R507A, R290). Bidirectional flow supports reversible systems such as heat pumps. The robust design provides good contamination resistance, suitable for systems with minimal oil carry-over.

⸻

Features & Benefits
• Compact and lightweight; easy to install in limited space
• Large valve chamber → lower noise and stable operation
• Fast, accurate flow regulation with stepper motor
• Excitation speed 30–90 PPS; smooth, wide modulation range
• Bidirectional flow for heat pumps/reversible systems
• Broad refrigerant compatibility (R22, R410A, R32, R134a, R404A, R507A, R452A, R454A, R290)
• Operating temperature: –30 °C to +60 °C
• Durable construction; IP67 protection

Note: R290 is flammable—use according to local safety standards and qualified system design.

⸻

Applications
• Central & residential air conditioners, heat pumps
• Heat pump water heaters
• Commercial refrigeration & cold storage
• Precision cooling and industrial HVAC/R

⸻

Key Specifications
• Rated voltage: 12 V DC (±10%) (24 V DC on request, if applicable)
• Drive: 4-phase, 8-beat permanent-magnet stepper motor
• Excitation speed: 30–90 PPS
• Capacity range: 2.7–95.6 kW (depends on refrigerant and conditions)
• Maximum working pressure (MAWP): 4.3 MPa (≈ 43 bar)
• Coil resistance: 46.3 ± 7 Ω/phase @ 20 °C
• Coil current: 260 mA/phase @ 20 °C
• Protection: IP67

FAQ

Related Products