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Brass thermostatic expansion valve with 30 in capillary tube and solder connections

Parker

Parker ECE-B-VZ Thermostatic Expansion Valve 1-1/2 to 3 Tons

SKU CH-2DZ7-RBEN0

Adjustable thermostatic expansion valve for R-22 systems rated 1-1/2 to 3 tons with 30 in capillary and 3/8 in by 1/2 in solder connections

  • TypeAdjustable
  • Adjustable superheat control matched to system load
  • R-22 compatible for standard refrigerant applications
  • 1-1/2 to 3 ton capacity range covers common units
  • 30 inch capillary length suits typical evaporator layouts
  • External adjustment allows tuning without system shutdown

Parker ECE-B-VZ Thermostatic Expansion Valve

The Parker ECE-B-VZ is an adjustable thermostatic expansion valve designed for R-22 refrigeration systems. It handles a nominal capacity range of 1-1/2 to 3 tons and features straight-through solder connections with a 3/8 inch inlet and 1/2 inch outlet. A 30 inch capillary tube and sensing bulb mounting clamp are included for installation.

HVAC technicians servicing R-22 systems

This valve suits technicians who need an externally adjustable metering device for R-22 applications within the 1-1/2 to 3 ton capacity range. It is not for installers working with other refrigerants or systems requiring a different nominal capacity rating. Buyers needing flare-type connections instead of solder fittings should look at something else.

Externally adjustable superheat control

The externally adjustable design allows precise superheat setting without removing the valve from the line. This single feature determines whether the valve matches the service requirements for maintaining accuracy over varying evaporator loads. The adjustment helps minimize hunting, flood back and coil starving problems during operation.

Highlights

  • Adjustable superheat control matched to system load
  • R-22 compatible for standard refrigerant applications
  • 1-1/2 to 3 ton capacity range covers common units
  • 30 inch capillary length suits typical evaporator layouts
  • External adjustment allows tuning without system shutdown

Specifications

BrandPARKER
TypeAdjustable

Questions about this item

How does the 1-1/2 to 3 ton capacity rating translate to actual system performance?

The valve meters refrigerant for evaporators rated between 1-1/2 and 3 tons using R-22, maintaining accuracy across load changes to minimise hunting, flood-back and coil starvation.

What connection standard do the 3/8 in inlet and 1/2 in outlet use, and what does it limit?

Straight-through solder connections accept 3/8 in and 1/2 in copper tube; the joint geometry and tube size set the practical flow limit.

What mounting hardware does the 30 in capillary and sensing bulb require?

A mounting clamp is included for the sensing bulb; the 30 in capillary routes to the bulb location on the suction line.

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