Emerson DX3 PA-31840 Electronic Expansion Valve Instruction Sheet

Instruction sheet for Emerson DX3 PA-31840 electronic expansion valve with installation, wiring, and safety guidelines.


Emerson DX3 PA-31840 Electronic Expansion Valve Instruction Sheet - cover page
Brand
Emerson
Document type
User Manual
Language
Chinese
Pages
2
File format
PDF
File size
618 KB
Published
03 October, 2026
Updated
03 October, 2026
MD5 checksum
59B8B3E2DEF96DCB3B25D3787CEF1E7B

About this manual

This instruction sheet provides detailed mounting, wiring, and safety procedures for the Emerson DX3 PA-31840 electronic expansion valve. It includes guidance on valve positioning, welding, controller connection, cable lengths, and thermal insulation.

The document also lists hazardous substance content for each component and outlines compliance with relevant standards. Technical data such as maximum operating temperature, dimensions, and cable specifications are provided for proper system integration. This manual is written in Chinese.

What's inside

  • Stator Mounting
  • Valve Position
  • Welding
  • Flow Direction
  • Controller Connection
  • Thermal Insulation Material Enveloping
  • Hazardous Substances
  • Cable Length Options
  • Overall Dimensions

Specifications

Maximum Operating Temperature120 °C (248 °F)
Original Control Cable Length2 m
Extended Control Cable Lengthup to 6 m
Cable Temperature Rating-25 °C to +80 °C

Frequently asked questions

What is the maximum allowable temperature for the valve?

The valve can operate up to 120 °C (248 °F).

What is the original length of the control cable?

The original control cable length is 2 meters.

Can the control cable be extended, and if so, how long?

Yes, the control cable can be extended up to a total of 6 meters, using UL2464 0.34 mm² cable.

Which hazardous substances are listed for the valve components?

The sheet lists lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr +6), PBB, PBDE, copper alloys, steel, stainless steel, plastic, rubber, and magnetic materials.

Download PDF (618 KB)

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