High Pressure Isolation Globe Valves

Valve Type: Stop / Globe Valve
Design Standards: ASME B16.34, EN 12516, IBR
Max Fugitive Emissions: 100 ppm
Size (NB): 1/4&#8243;, 3/8&#8243;, 1/2&#8243;
Pressure Classes: Class 1500, 2500, 4500

Proper isolation of extreme-temperature steam samples is the most fundamental and critical aspect of any local instrumentation rack or SWAS grid. The Forbes Marshall Slim Trim High Pressure Globe Isolation Valve performs the essential “job” of safely and effectively stopping high-pressure steam flow from supercritical boilers and power plants
Unlike standard valves, these compact stop valves are specifically engineered with an outside screw and yoke construction to withstand severe thermodynamic stress. By featuring die-formed graphite packing with controlled stem clearances, the Slim Trim valve guarantees maximum fugitive emission levels of under 100 ppm, protecting both plant personnel and the environment. Ultimately, this globe valve delivers reliable, leak-tight isolation and easy wall-mounting maintenance, ensuring your sampling lines remain secure and compliant with global ASME and EN standards.

Industrial Applications of Slim Trim High Pressure Globe Isolation Valve

Supercritical Boiler Sampling: Primary sample extraction line isolation
Local Instrumentation Racks: Secure shut-off before high-pressure cooling and pressure reduction

Die-Formed Graphite Packing: Guarantees low emissions (maximum 100 ppm), ensuring a safe and environmentally compliant sampling environment
Outside Screw and Yoke Construction: Keeps stem threads isolated from the hot process fluid, preventing thermal damage and ensuring ease of maintenance
Self-Aligning Two-Piece Gland: Prevents stem binding and ensures even packing compression for a prolonged, leak-free operational life
Class 4500 Rating Capability: Safely handles the extreme pressures of modern supercritical power plants within a highly compact (up to 3 kg) footprint

High Pressure Isolation Globe Valves

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