Danfoss Motor operated valves types ICM65-100,ICM125-150 Electric valves Design

Connections

There is a very wide range of connection types

available with ICM valves:

• D: Butt weld, EN 10220

• A: Butt weld, ANSI (B 36.10)

• J: Butt weld, JIS (B S 602)

• SOC: Socket weld, ANSI (B 16.11)

• SD: Solder connection, EN 1254-1

• SA: Solder connection, ANSI (B 16.22)

• FPT: Female pipe thread (ANSI/ASME B 1.20.1)

Approvals

The ICV valve concept is designed to fulfil global

refrigeration requirements.

ICM is CE, UL and CRN approved

For specific approval information, please contact

Danfoss.

The ICM valves are approved in accordance with

the European standard specified in the Pressure

Equipment Directive and are CE marked.

For further details / restrictions - see Installation

Instruction.

Valve body and top cover material

Low temperature steel

Danfoss Motor operated valves types ICM65-100,ICM125-150 Electric valves Function

ICM, motor operated valves are designed for usewith the ICorce from the actuator is transferred

via a magnetic coupling (a) through the stainless

steel top housing (b) and thus eliminates

the need for a packing gland. The rotational

movement of the magnetic coupling (a) is

transferred to a spindle (c) which in turn provides

the vertical movement of the piston (d) and the

valve seat (e), to open and close the valve. The

closing force of the actuator, combined with

the the valve seat (e) and PTFE valve plate (f),

provides an effective seal to prevent leakage

across the valve port, when the valve is in the

closed position. To prevent damage to the PTFE

valve seat (e) and plate (f) from system debris, it

is recommended that a filter is installed upstream

of the valve. Please refer to page 14 for filter

sizing and application recommendations.

ICM 20 – 65:

Valve inlet pressure (P 1 ) acting on the underside

of the PTFE valve seat (e) also passes through

the hollow piston assembly (d) on to the top of

the piston (d) and balances the pressure acting

on the piston (d). Any trapped liquid across the

throttle cone (g) is allowed to equalise down

to the valve outlet without affecting the valve

performance.

ICM 100 – 150:

Danfoss Motor operated valves types ICM65-100,ICM125-150 Electric valves Function 

Valve inlet pressure (P1) acting on the underside

of the PTFE valve plate (h) also passes through

the equalization hole (i) and ensures that the

servo piston (j) is pressure balanced. This will

equalize P1 and P2. During an opening operation

of the valve, the pilot piston (k) will be raised

from its valve seat inside the servo piston (j).

This allows the P2 pressure to escape through

the servo piston (j) to the outlet of the valve.

The pressure P1 will act on the underside of the

servo piston (j) and force it to open. This will

close the gap between the pilot piston (k) and

the servo piston (j) until the pressures P1 and P2

are equalized again. When there is no pressure

difference between P1 and the outlet of the valve

the pilot piston (k) is attached to the servo piston

(j) ensuring it to open up.