... ratings from 2000psi, 3000psi, 5000psi, 10000psi and 15000psi, material classes from AA through FF, product specification levels (PSL) from 1 ... design.Rising stem slab gate valves are available in temperature classes L, P, R, S, T, and U specified in ... 2000psi, 3000psi, 5000psi, 10000psi and 15000psi working pressure, material classes from AA through FF, product specification levels (PSL) from 1 ...