KDE420SA 2-Stage 4K GM Cryocooler 2.5W @ 4K GM Coldhead He Liquefy

Model: KDE420SA

Item specifics

Application: Hydrogen Liquefaction

Cooling Capacity (50Hz): 2.5W 4.2K

Lowest Temperature: <3.5K

Power Consumption (50Hz): <7.2 kW

Cooling Type: Water Cold

Cool down Time (1st stage): < 60min (4.2K)

Weight: 20 kg

Review

Description

The Pride KDE420SA is a high-capacity two-stage Gifford-McMahon (GM) cryocooler designed for applications requiring temperatures down to 4 K. It provides 2.0 W of cooling capacity at 4.2 K and 20 W at 50 K, making it suitable for superconducting devices, cryopumps, cryostats, quantum technology research, and helium recondensation systems. The cryocooler reaches 4.2 K in less than 60 minutes and is driven by the KDC6000 helium compressor.

Featuring a robust and proven GM refrigeration cycle, the KDE420SA offers high reliability, long service life, and stable continuous operation. The cold head is water-cooled and connected to the compressor through flexible helium lines, allowing easy integration into laboratory and industrial cryogenic systems. The cold head requires scheduled maintenance every 15,000 operating hours to ensure optimal performance and reliability. Cooling capacity is rated at 20 W @ 50 K on the first stage and 2.0 W @ 4.2 K on the second stage.

Specifications

Model No.	KDE420SA (4K)
Brand	Pride
Lowest Temperature	< 3.5K
Cooling Capacity (50Hz)	1st Stage	2nd Stage
	40W @ 50K	2.5W @ 4.2K
Cool down Time	60min
Weight	Coldhead	Compressor
	20 kg	118 kg
Compatible Helium Compressor	KDC6000V
Power Consumption (50Hz)	Steady	Cooldown
	6.5kW	7.2kW
Cooling Type	Water-cold
Cooling Water Requirement	> 7 L/min
Standard Flexline	20A×20m
Maintenance Interval	Coldhead
	18 month
Warranty Period	1 Year

Working & Storage Conditions

Item	Operating	Storage
Ambient Temperature	4~40 ℃	-20~65 ℃
Relative Humidity	30%~70%	0%~90% (Requiring No-condensing)
Ambient atmospheric pressure	70kPa~110kPa	20kPa~110kPa