Installation guide: Electric expansion valve AKVA 20

Specifications

Refrigerants: R717, HCFC, HFC

• Maximum Working Pressure (MWP): PS 42 bar (609 psig)
• Maximum Operating Pressure Difference (MOPD max.): (P1-P2) max. 18 bar (261 psig)

Temperature Limits:

• Ambient Temperature: -40 °C < t_amb < 50 °C (-40 °F < t_amb < 120 °F)
• Media Temperature: -40 °C < t_media < 60 °C (-40 °F < t_media < 140 °F)

Diagram shows temperature limits for ambient and media.

Materials

Cover / Deckel / Raccordement / Lock / Anslutning Material: P285QH EN 10222-4

The valve must be installed stress-free in the pipe system by qualified personnel and processes only. After welding, the valve should be surfaced to be corrosion-proof.

Diagram shows the valve body with labeled parts: Cover, Lock/Anslutning.

Installation Notes & Diagrams

Diagram shows a schematic of the AKVA 20 valve with inlet (P1) and outlet (P2) ports, and a filter symbol labeled "FIA 100 μm (Mesh 150)", indicating a required filtration level.

Diagram depicts a valve connection with a torque specification of "30 ± 3 Nm" for tightening.

Diagram shows the valve with "On" and "Off" indicators, and a screwdriver, suggesting manual operation or adjustment.

Valve Sizing

Each line marking on the piston indicates the valve size. The AKVA 20-3 is shown as an example.

Diagram shows an exploded view of the AKVA 20 valve assembly.

Diagram shows a connection point on the valve with a torque specification of "75 Nm ± 5 Nm".

Service and Maintenance Warnings

Important:

• Service must not be carried out when the valve is under internal pressure.
• Use only original Danfoss spare parts.
• All service and installation must only be performed by authorized personnel.

Diagram illustrates the process of replacing a gasket. It shows a disassembled valve part and indicates "New" and "Used" gaskets.