VELCO Cryopumps

VELCO² 250
VELCO² 250
VELCO² 320
VELCO² 320
VELCO² 400
VELCO² 400
VELCO² 500
VELCO² 500
VELCO² 630
VELCO² 630
VELCO 800
VELCO 800
VELCO 900
VELCO 900
VELCO 1000
VELCO 1000
VELCO 1250
VELCO 1250

VELCO cryopumps are available in sizes DN 250 to DN 1250 as standard.

The optimized design of the internal components and a powerful cooling system allow operation under challenging conditions, i.e., high gas loads and/or high thermal radiation exposure up to 350 °C. Additionally, this combination enables long operating times without interruptions and minimizes regeneration time.

The housings, manufactured from stainless steel, for sizes DN 250 to DN 630 are welded as a single component. Larger housings are in two part and are assembled by flanging.

Depending on the application, optimized series offer above-average pumping capacity or pumping performance relative to the respective flange size. This allows for a reduction in the number of pumps required and thus cost savings.

Model designation VELCO 250 VELCO 320 VELCO 400 VELCO 500 VELCO 630 VELCO 800 VELCO 900 VELCO 1000 VELCO 1250
Inlet flange DN 250 ISO-K DN 320 ISO-K DN 400 ISO-K DN 500 ISO-K DN 630 ISO-K DN 800 ISO-F DN 900 ISO-F DN 1000 ISO-F DN 1250 ISO-F
Forevacuum flange DN 40 ISO-KF DN 40 ISO-KF DN 40 ISO-KF DN 40 ISO-KF DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K
Pumping speed [l/s]                
Water 7100 11600 18’200 28400 45100 72700 92’000 113600 177’500
Nitrogen 3’500 5’000 8’000 12’000 18’500 28’000 36’000 45’000 67’000
Argon 2’900 4’200 6’800 8’500 13’500 24’000 31’000 38’000 57’000
Hydrogen 4’500 5’500 7’500 9’100 10’000 25’000 33’000 40’000 60’000
Capacity [barl]                
Argon 2’500 2’500 8’000 10’000 15’000 20’000 21’000 22’000 30’000
Nitrogen 2’500 2’500 8’000 10’000 15’000 20’000 21’000 22’000 30’000
Hydrogen 25 25 32 38 50 100 110 120 150
Model designation VELCO² 250 H2 VELCO² 320 H2 VELCO² 400 H2 VELCO² 500 H2
Inlet flange DN 250 ISO-K DN 320 ISO-K DN 400 ISO-K DN 500 ISO-K
Forevacuum flange DN 40 ISO-KF DN 40 ISO-KF DN 40 ISO-KF DN 40 ISO-KF
Pumping speed [l/s]      
Water 7’100 11’600 18’200 28’400
Hydrogen 5’500 9’400 13’900 23’000
Helium 2’800 4’900 7’200 11’900
Capacity [barl]      
Hydrogen 60 60 120 120
Helium 1 1 2 2
Throughput [sccm]      
H2 continuous 400 400 600 600
H2 continuous 600 600 900 900

Model designation VELCO² 400 Xe VELCO² 500 Xe VELCO² 630 Xe VELCO 800 Xe VELCO 900 Xe VELCO 1000 Xe VELCO 1250 Xe
Inlet flange DN 400 ISO-K DN 500 ISO-K DN 630 ISO-K DN 800 ISO-F DN 900 ISO-F DN 1000 ISO-F DN 1250 ISO-F
Forevacuum flange DN 40 ISO-KF DN 40 ISO-KF DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K DN 63 ISO-K
Pumping speed [l/s]            
Water 18’200 28’400 45’100 72’700 92’000 113’600 177’500
Nitrogen 6’800 10’500 18’500 28’000 36’000 45’000 67’000
Argon 5’800 7’300 15’500 24’000 31’000 38’000 57’000
Hydrogen 6’400 7’800 14’000 25’000 33’000 40’000 60’000
Xenon 6’700 10’500 16’700 26’900 34’100 42’100 65’800
Capacity [barl]            
Argon 8’000 10’000 15’000 20’000 21’000 24’000 30’000
Nitrogen 8’000 10’000 15’000 20’000 21’000 24’000 30’000
Hydrogen 32 38 50 100 120 130 150

Model designation VELCO² 250S VELCO² 320S VELCO² 400S
Inlet flange DN 250 ISO-K DN 320 ISO-K DN 400 ISO-K
Forevacuum flange DN 40 ISO-KF DN 40 ISO-KF DN 40 ISO-KF
Pumping speed [l/s]    
Water 7’100 11’600 18’200
Nitrogen 3’000 3’500 6’500
Argon 2’500 3’000 5’200
Hydrogen 3’800 5’700 7’500
Capacity [barl]    
Argon 2’500 2’500 8’000
Nitrogen 2’500 2’500 8’000
Hydrogen 25 25 30
Throughput [sccm]    
Ar continuous 1’000 1’000 1’000
Ar continuous 1’250 1’250 1’250