4" x 20' Cryogenic Transfer Hose — 450 PSIG CL300

What pressure, flow and temperature is it rated for?

This hose is rated for 450 PSIG. Flow capacity depends on the inner corrugation design and insulation configuration, which are not specified in the listing—ask the seller for the rated flow in SCFM or GPM for your intended fluid. Cryogenic hoses are typically rated to handle fluids from -320°F (LN2) up to ambient, though the exact temperature range should be confirmed with the manufacturer's datasheet.

What materials are the wetted parts?

The listing does not identify the hose construction or materials. Cryogenic hoses typically use corrugated stainless steel inner cores with vacuum-jacketed or foam insulation, and Class 300 flanges are normally carbon or stainless steel. Ask the seller for the manufacturer's specification sheet showing the inner tube material, jacket material, and flange metallurgy.

What should I inspect before putting it into service?

Even though this hose is listed as new, verify that the vacuum jacket holds vacuum (if vacuum-insulated), check all flange faces for damage or contamination, and confirm gasket seats are clean and undamaged. Pressure test the hose per your site procedures before introducing cryogenic fluid, and if used for oxygen service, verify oxygen cleaning certification is current and the hose has been properly capped to maintain cleanliness during storage.