Every HL-120 and HL-190 cryogenic freezer models are made with a 100psi relief valve. The 100psi relief valve can be switch for a 50psi relief valve if end users require a 50psi working pressure. As long as the primary relief valve remains higher than the road relief valve pressure setting, it can be legally lowered but then a back pressure regulator is necessary. We have created a kit Part Number 13394192 in order to facilitate the need for filling atmospheric dewars, which replaces the 22psi road relief valve with a 0-30psi back pressure regulator which with minimal flash loss allows for liquid flow into cryogenic aluminum dewars.
Mutually both units are equipped with the same plumbing assembly, consisting of dual relief valves, dual fill valves, and single road relief valves. They are designed to meet ASME specifications and have a maximum operating pressure of 100psi. Please find below the list prices on these units.
| Name | Part number | List Price |
| HL-120 | 11818705 | $9000.00 |
| HL-190 | 11814721 | $14000.00 |
| Service Kits | ||
| O2 | 11830211 | $275.00 |
| LN2 | 11830237 | $275.00 |
| Accessory Kits | ||
| Vent Kit | 11864277 | $280.00 |
| Mounting Kit | 10591449 | $280.00 |
| Low pressure kit | 13394192 | $182.00 |
| Kits can be used for either 120 or 190 | ||
| Adaptors | ||
| Adaptor 1” to 5/8 ODT O2 | 5518422 | $50.00 |
| Adaptor 1” to ½ OD LN2 | 5510562 | .$50.00 |
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