Control valves, severe-service ball and butterfly valves, pressure safety valves, and pneumatic and electric actuators — including the engineered valves where selection, materials, and testing decide whether the bid survives.
Valve specifications in the U.S. are dense: API 600 / 6D construction, ASME B16.34 pressure-temperature ratings, API 598 testing, fugitive-emission requirements, and for relief devices, API 520 / 521 sizing and API 526 orifice selection. Severe service adds its own traps — trim materials for erosion and corrosion, noise limits, and actuator sizing against real operating margins, not catalogue best cases.
We review your valve offering the way a U.S. reviewer will: datasheet by datasheet, calculation by calculation — and we support the TQ responses that keep a technically sound valve from being rejected on a documentation technicality.