globekleppen

Globekleppen are the Dutch term for globe valves, a class of linear-motion valves used to regulate flow in piping systems. They are named for the globe-like shape of their bodies and operate with a movable disk or plug that seats against a stationary valve seat to throttle or stop flow.

Construction and design: The valve body typically contains a non-straight internal passage that creates a tortuous flow path, which supports precise throttling but increases pressure drop. The disk moves axially relative to the seat, controlled by a stem connected to a handwheel or actuator. Seats are usually replaceable, and trim materials vary, commonly including PTFE and graphite.

Operation and performance: Globe valves offer good throttling capabilities and reliable shut-off, making them suitable for applications requiring precise flow control. They are widely used for throttling services. However, they generally produce higher pressure losses than some other valve types for the same flow and can be heavier and less economical for very large diameters compared with gate or ball valves.

Variants and materials: Common configurations include straight-through globe valves and angle globe valves. Sizes range from small to large, and materials include stainless steel, carbon steel, bronze, brass, and other alloys. They are rated according to standard pressure classes (for example ANSI/ASME).

Applications and maintenance: Globe valves are used in chemical processing, oil and gas, power generation, water treatment, and HVAC systems where precise throttling and reliable shut-off are required. Maintenance considerations include packing gland leakage, bonnet sealing, and replacement of seats or seals as part of regular service.