Specifications: 1) Sizes: 2 - 20" 2) Pressure class: 150 - 2,500lb. 3) Suitable temperature: -28 ~ 425oC 4) Suitable medium: water, steam, oil products, nitric acid, acetic acid 5) Body material: wcb, wc6, wc9, cf8, cf8m, cf3, cf3m 6) Connection: FF, RF