... stem slab gate valves are available in temperature classes L, P, R, S, T, and U specified in API 6A The Non ... stem slab gate valves are available in temperature classes L, P, R, S, T, and U specified in API 6A. Gate valves ... and 10000psi working pressure, nominal size from 1-13/16" through 4-1/16",material classes from AA through FF, product specification ...