VALVOLA SOLENOIDE 1020

Refrigerant Boys TEZ2 Series Thermostatic Expansion Valve for R407C – Flare Connections with 1/4″ SAE External Equalization

78,50€ VAT EXCLUDED

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Refrigerant Boys TEZ2 Series high-precision mechanical thermostatic expansion valve, designed for the calibrated delivery of liquid refrigerant to the evaporator in air conditioning, heat pump, and refrigeration systems operating with R407C gas. Features a forged brass body with SAE Flare threaded connections, a 1/4″ SAE, a laser-welded stainless steel diaphragm, and a sensor bulb on a flexible capillary tube for stable and accurate superheat modulation.

SKU: VATEZ2DA Categories: ,

78,50€ VAT EXCLUDED

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Description

Stable Overheating Control and Efficiency in R407C Circuits with High Pressure Drop

The R407C zeotropic mixture exhibits a characteristic temperature glide that requires particularly precise thermostatic control. Unlike models with internal equalization, the Refrigerant Boys TEZ2 series features a 1/4″ SAE Flare port for external equalization, which is essential when the system uses liquid distributors, multi-circuit coils, or components that cause significant pressure drops. By detecting the actual pressure at the evaporator outlet on the suction line, the valve ensures an immediate response to changes in thermal load, eliminating hunting and preventing dangerous liquid return to the compressor.

Strengths & Advantages:

  • External Equalization 1/4″ SAE Flare: Compensates for internal pressure drops in the evaporator or venturi distributor, ensuring proportional modulation and constant superheat throughout the entire heat exchange coil.

  • Sturdy Forged Brass Body: Standard male SAE Flare threaded connections for quick and safe service without the need for torch welding, protecting internal components from thermal shock.

  • Laser-Welded Stainless Steel Sensing Element: Stainless steel diaphragm and head sealed by laser welding, resistant to high pressure stresses and frequent thermal cycles, preventing refrigerant leaks from the bulb.

  • High-Dynamic-Response Sensor Bulb: Instantly transmits temperature fluctuations detected on the suction pipe to the upper diaphragm, continuously optimizing the evaporator’s wetted surface area.

  • Superheat Fine-Tuning Stem: Equipped with a calibration screw protected by a hermetically sealed brass cap, for static superheat calibration during startup or maintenance.

  • Inert to POE Lubricants: Internal components and seals are formulated to ensure complete chemical resistance and sealing compatibility with the synthetic ester oils (POE) used in R407C systems.

TECHNICAL SPECIFICATIONS

FeatureSpecifications
Brand / LineRefrigerant Boys – TEZ2 Series
Product TypeAdjustable Mechanical Thermostatic Expansion Valve
Compatible Refrigerant GasR407C
Pressure EqualizationExternal via 1/4″ SAE Flare (male) connection
Main Connection TypesSAE Flare-type male threads (flare)
Valve Body MaterialForged brass with high mechanical strength
Sensing Element MaterialStainless steel with hermetically sealed laser weld
Capillary Tube and BulbSpiral capillary tube with a cylindrical stainless steel sensor bulb
Lubricant CompatibilityEster-based synthetic oils (POE)
Temperature RangesAir Conditioning, Heat Pumps, and Medium-Temperature Refrigeration (AC / MBP)
Areas of ApplicationWater chillers, ducted split and multi-split air conditioners, heat pumps, air handling units (AHUs), and commercial refrigerated display cases using R407C with a liquid distributor

Additional information

Weight0,5 kg

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