https://www.athenavalve.com/products/axial-flow-check-valve.html

Size: 2″~36″Pressure rating:150LB~1500LBBody material: Carbon steel /Stainless steel / Alloy steel /Special ( Monel /Inconel /Hastelly etc.)alloy steelEnd connection: RF/BW/RTJNACE: MR0175Certificate: CE/PED, ISO, ATEX, SIL