Severe Service

This category includes M1 metal-seated ball valves and M4 steam vent and drain isolation valves for severe operating conditions involving high temperature, high pressure, corrosion, erosion, and more. M1 is suitable for critical isolation applications in power generation, mining, oil and gas, refining, and chemical processing; M4 focuses on venting, draining, and blowdown of steam and superheated steam in power plants. Selection should prioritize verification of the process medium, pressure-temperature rating, valve size, connection type, flow direction, and required shutoff performance.