Dikkan DN400 Panduan Petunjuk Pengoperasian - Halaman 4

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3. DESCRIPTION

Globe valves are named for their spherical body shape.

A Globe valves is a linear motion valve and are designed to close off, open up or regulate the flow in a pipeline. The

disc is designed to stop flow and a tight seal with pressure under the disc. In the 10% open position to full open position,

globe valves are efficient in throttling line pressure. Continuous throttling at less than 10% open may cause noise &

vibration, wear and damage to discs and seats. SDNR valves are used as non-return valves protecting the plant against

back flow of medium and additionally they can shut off the flow. Regulating disc is a spherical shape that makes it a

better choice for regulating applications. Bypass disc is for higher differential pressures. In such cases pressure must

be over the disc.

Globe valves are operated by handwheel manually. If required, valves can be produced suitable for gearbox,electrical,

pneumatic or hydraulic actuator installation. General features of the globe valves are as follows;

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Bolted bonnet,

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Outside screw and yoke

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Rotating rising stem & handwheel

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Metallic or soft seating surfaces

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Special trims available

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Flanged

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Backseat

Doc. No: FRM.65

Rev. No: 00 Rev. Date: 01.06.2015