Danfoss 068Z3728 Thermostatic Expansion Valve – Angleway, externally equalized for R448A, R449A

The Danfoss 068Z3728 thermostatic expansion valve (TXV) is designed for precise refrigerant control in refrigeration and HVAC systems using R448A, R449A. It ensures stable superheat regulation and reliable operation under varying load conditions.

Caracteristicas principales

• Refrigerante: R448A, R449A
• Capacidad: 0.25 to 5.5 tons
• Rango de temperatura: -40 C to +50 C
• Conexiones: 3/8 pulg flare inlet × 1/2 pulg flare outlet
• Tipo de valvula: Angleway, externally equalized
• Longitud del tubo capilar: 59 pulg
• Presion maxima de trabajo: 500 psig
• Sobrecalentamiento estatico: 7.2 C (adjustable)
• Numero de parte identico: 068Z3732

Aplicaciones

Ideal for walk-in coolers, freezers, display cases, chillers, and other commercial refrigeration systems requiring accurate refrigerant expansion with R448A, R449A.

Numeros de parte equivalentes

• Emerson TX series
• Sporlan EBS or ER series
• ALCO T/TE/TI series

Preguntas frecuentes

• Is the orifice interchangeable?
  Yes, supports multiple orifice sizes for capacity matching.
• Can I use other refrigerants?
  No, this model is calibrated for R448A, R449A only.
• Why internal or external equalization?
  This configuration ensures proper control under the specified operating conditions.
• What does the capillary tube do?
  It transmits sensing bulb data to the valve for responsive superheat control.