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Help CenterDanfoss Types ICLX65,ICLX100,ICLX150,027H6040 2-step Solenoid Valves
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Danfoss Types ICLX65,ICLX100,ICLX150,027H6040 2-step solenoid valves Function
The ICLX valve is used as a shut-off valve in suction lines to open after hot gas defrost.The valve is a pilot controlled valve operated by an external pilot pressure source. This means that the valve can operate with no internal pressure differential (P d ) at all.Low P d is the key objective and makes the ICLX valve ideal for applications that are sensitive to differential pressure. Though P d is kept low, it can still be quantified, and must be considered when choosing valve size. See section - Selection of ICLX valve - for the impact.The main valve is provided with two pilot solenoid valves, as well as a nipple for connection to external pilot pressure. The external pilot pressure line must be connected to a system pressure (p2) which is at least 1.5 bar / 20 psi higher than the inlet pressure (p1) of the valve. The difference between the external pilot pressure and the inlet pressure of the valve defines the maximum opening differential pressure (MOPD) of the ICLX.
The ICLX is kept open when power is applied to the coils placed on the EVM pilot solenoid valves pos. 1 and pos. 2. The ICLX is closing and kept closed when the coils on EVM pilot solenoid valves pos. 1 and pos. 2 are de-energised.The pilot solenoid valve (pos.1) allows external pilot pressure (p 2 ) to the bottom of the servo piston and thus opens the first step corresponding to approx. 10% of the valve capacity. At the same time the bleed spring will be compressed. This will start a pressure equalization of the inlet pressure (p 1 ) to the outlet pressure. When the differential pressure across the valve has fallen to approx. 1.25 bar /
18 psig the spring will be strong enough to open the second step and open the valve for full capacity.
This way high-pressure pulsations, which would occur when opening for full capacity in one step, can be avoided.ICLX must not be used in pipe systems where the differential pressure across the main valve in open position can exceed 1 bar / 15 psig, otherwise the step two on the valve will close.
Danfoss Types ICLX65,ICLX100,ICLX150,027H6040 2-step solenoid valves Features
• Designed for Industrial Refrigeration
applications for a maximum working pressure
of 52 bar g / 754 psig.
• Applicable to HCFC, HFC, R717 (Ammonia) and
R744 (CO 2 ).
• Can be used in chemical and petro-chemical
applications.
• Direct welded connections.
• Connection types include butt weld, socket
weld and solder connections.
• Low temperature steel body.
• Low weight and compact design.
• Only one signal required for both pilot solenoid
valves.
• The ICLX main valve top cover can be oriented
in any direction without the function of pilot
valves being affected.
• Especially suitable for systems where low
pressure drop is required.
• Stabilizes working conditions and eliminates
pressure pulsations during opening after
defrosting.
• Provides safety against pressure "shocks" as the
valve can only open fully when Δp
18 psig.
• Cavitation resistant valve seat.
• Manual opening possible.
• PTFE seat provides excellent valve tightness.
• Service friendly design.
• Classification: DNV, CRN, BV, EAC etc.
To get an updated list of certification on the
products please contact your local Danfoss
Sales Company.
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