Refrigeration Expansion Valves - Refrigeration and HVAC

Refrigeration expansion valves regulate refrigerant flow into evaporators on marine refrigeration, provision cooling, air-conditioning and HVAC systems. Thermostatic and electronic types maintain superheat and protect compressors from liquid refrigerant return.

ProShipWorks provides end-to-end support to source and supply Refrigeration Expansion Valves for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Refrigeration Expansion Valves
Product Category	Refrigeration and HVAC
Product Reference	1424
Brands / Manufacturers	Danfoss, Parker Sporlan, Emerson
Unit of Measure	Piece

Key Features

Key Feature
1. Controls refrigerant flow according to evaporator load
2. Maintains evaporator outlet superheat
3. Available for common marine refrigerants including R134a, R404A, R407C, R410A and R513A
4. Thermostatic and electronic control options
5. Available with replaceable orifice assemblies and corrosion-resistant components

Applications of Refrigeration Expansion Valves

Application
1. Marine air-conditioning and chilled-water plants
2. Provision refrigeration and cold-storage rooms
3. Refrigerated cargo and container cooling systems

Models & Manufacturers

Model	Manufacturer
TE2	Danfoss
TE5	Danfoss
ETS 6	Danfoss
TXV Series	Parker Sporlan
EX4	Emerson

Technical Specifications

Model	Specification	Value	Unit
TE2	Valve type	Thermostatic expansion valve	—
TE5	Valve type	Thermostatic expansion valve with interchangeable orifice	—
ETS 6	Valve type	Electronic expansion valve	—
TXV Series	Valve type	Thermostatic expansion valve	—
EX4	Valve type	Electronic expansion valve	—

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Applicable requirements may include PED 2014/68/EU, EN 12284, ISO 5149 and ASHRAE 15, depending on valve design, refrigerant and installation. Product-specific conformity documentation must be verified with the manufacturer.
Class Approval	Marine acceptance and type approval are application- and manufacturer-specific. DNV, ABS, Lloyd's Register, Bureau Veritas and ClassNK may accept the valve as part of an approved refrigeration or HVAC system; verify the vessel class documentation before procurement.

Installation, Maintenance & Safety Information

Installation Notes	Select the valve, power element, orifice and refrigerant for the specified evaporating and condensing conditions. Install in the correct flow direction, protect the sensing bulb from damage, insulate and secure it at the evaporator outlet, and braze using dry nitrogen where required. Follow the manufacturer's superheat setting procedure.
Maintenance Tips	Inspect for refrigerant leakage, frost patterns, abnormal superheat and restricted strainers. Check bulb attachment, electrical connections on electronic valves, and controller operation. Replace damaged power elements, coils, sensors or orifices with approved parts and recommission superheat after service.
Safety Notes	Isolate, recover and depressurize the refrigerant circuit before removal. Use refrigerant-specific PPE, ventilation and recovery equipment. Do not mix refrigerants or exceed the valve pressure and temperature ratings. Electrical work must be performed with power isolated by qualified personnel.