Piston pump for industrial gas
max. 420 bar | SDPD Cryo Star

1 The cold end is slanted upwards by 10 degrees, thus
improving degassing of the pump cylinder and
preventing accumulation of gas in the suction
chamber prior to start-up and during operation
2 Thanks to the excellent vacuum insulation, the
lowest temperature is kept in the pump body, and
the liquid is available for an instant re-start (without
venting)
3 The suction chamber is designed to separate
any flash gas from the incoming liquid, assuring a
homogeneous flow of cold liquid into the cylinder
4 The straight inflow suction valve provides the best
possible low resistance flow characteristic, ensuring
a low NPSH requirement. (large diameter of the
inflow suction valve)
5 The thin “hat” seal rings remain flexible even at
extremely low temperatures
6 The cold end is either screwed in, or bolted to an
intermediate piece. This open distance piece serves
as a cold break between the cylinder and the crank
drive
7 Both the crank drive and the intermediate part have
connections for an optional nitrogen purge
8 Thermosiphon tank suction valve execution (option),
allowing for a shorter cool down period as well as
reduced losses
9 Piston head made of bronze allowing a safer
operation.