Cryogenic pump for hydrogen fueling station

A hydrogen fueling station including a cryogenic pump hydraulic system, the cryogenic pump hydraulic system comprising:

• a first hydraulic cylinder including a first hydraulic piston, the first hydraulic piston including a first piston seal separating a first low pressure portion of the first hydraulic cylinder above the first piston seal from a first high pressure portion of the first hydraulic cylinder beneath the first piston seal;
• a second hydraulic cylinder including a second hydraulic piston, the second hydraulic piston including a second piston seal separating a second low pressure portion of the second hydraulic cylinder above the second piston seal from a second high pressure portion of the second hydraulic cylinder beneath the second piston seal;
• at least one first hydraulic volume source configured to selectively communicate fluid between the first high pressure portion and the second high pressure portion;
• a first controllable valve configured to selectively place the first low pressure portion and the second low pressure portion in fluid communication with at least one low-pressure line;
• a second controllable valve configured to selectively place at least one second hydraulic volume source in fluid communication with the first high pressure portion;
• and
• a third controllable valve configured to selectively place the at least one second hydraulic volume source in fluid communication with the second high pressure portion.