Globe valves regulate flow in a pipeline and are used to control or stop the flow of liquid or gas through a pipe.
Globe valves are so named for their spherical body shape, with the two halves of the body separated by an internal disc.
Typical applications of globe valves include:
Construction: Straight body, Y-body, angle valves Construction: Bolted, Welded, for high pressures – Plug, needle, parabolic, and linear shutter
Main Design Standards: ASME B16.34, API 602, BS 5352, ISO 15761, BS 1873,
Pressure Classes: ANSI 150#-4500#
Sizes: from ½” to 2” API
6A Pressure Classes: 3000-15000 API
6A Sizes: from 1 13/16” to 11”
Connections: SW, NPT, BW, RF, RJ
Materials: Carbon Steel, Stainless Steel, Alloy Steel, and Exotic Materials
Construction: Straight body, Y-body, angle valves Construction: Bolted, Welded, for high pressures – Plug, needle, parabolic, and linear shutter
Main Design Standards: ASME B16.34, BS 1873, API
6A Pressure Classes: ANSI 150#-4500#
Sizes: from 2” to 24”
Connections: BW, RF, RJ Materials: Carbon Steel, Stainless Steel, Alloy Steel, and Exotic Materials
The globe valve consists of a movable disc element and a seat fixed in a generally spherical body.
When the disc is fully lowered, fluid flow is interrupted. When the disc is fully raised, fluid flow is at its maximum value.
In large industrial applications, a globe valve can be actuated using an electric, pneumatic, or hydraulic actuator instead of a manual handwheel. The disc inside causes the fluid to change its direction to pass through the disc.
Due to this movement, the product cannot flow freely and causes a pressure drop after the valve. Since the entire system pressure exerted on the disc is transferred to the valve stem, the practical size limit for these valves is NPS 12 (DN 300).
Globe valves larger than NPS 12 (DN 300) are more of an exception than the rule. Larger valves require enormous forces to be exerted on the stem to open or close the valve under pressure. However, globe valves up to NPS 48 (DN 1200) exist.
The range of flow control, pressure drop, and service must be considered in the valve design to avoid early failures and to ensure satisfactory service.
At MAGVALVES you can also find a multitude of other valves, such as check valves and butterfly valves, as well as filters and sight glasses.
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