Globe Valve

Globe valve is a linear motion valve mainly designed for fluid isolation or complete shut-off applications. Its trim assembly can be fully retracted from the flow path in the open position or completely seated to block the flow channel when closed.

Globe valves are mainly used for medium shut-off, and their flow resistance characteristics are higher than those of straight-through valves such as gate valves, making them suitable for applications where pressure drop control is not critical.

Globe valves are widely used for precise flow regulation. Their design must incorporate critical considerations of flow control range, pressure drop characteristics, and mechanical load distribution to prevent premature valve failure.

Valves designed specifically for high-pressure differential throttling applications require specially engineered internal trim components.

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Details

Product Introduction

Bolt connected valve bonnet, rising stem, lifting stem, metal seal.

Connection of valve body and valve bonnet

The valve body and valve bonnet of globe valves within Class150~Class900 (PN10~PN160) pressure ratings typically employ a stud-and-nut connection design.

Actuation Type

Generally, hand-wheel actuation, worm gear actuation, gear actuation, electric and pneumatic actuation are used.

Packing

Standard packing is flexible graphite formed packing; PTFE, metal wire reinforced flexible graphite formed packing or composite packing can be selected according to actual requirements.

Backseat structure

The entire series is equipped with a backseat structure. Carbon steel valves generally have replaceable backseat ring, while stainless steel valves feature a formed back-seat through integral machining or overlay welding; The backseat structure ensures reliable sealing when the valve is fully open.

Seat

Carbon steel globe valves use forged valve seats with spray-welded, user-specified alloy sealing surfaces. For NPS≤10 and DN≤250, the valve seat are default threaded connections to the valve body, with welded connections also available. Valves with NPS≥12 and DN≥300 typically employ welded connections. Stainless steel globe valves generally feature integral seats (machined from the valve body) or overlay-welded alloy directly on the body. Threaded or welded seats may also be configured based on requirements.

Design of valve stem

The valve stem is manufactured as an integral forged component, with its minimum diameter strictly adhering to industry standard specifications.

Application Station

Cooling water system that requires flow regulation

Fuel system with flow regulation and water tightness regulation

Boiler ventilation and drainage pipes, main steam ventilation and drainage pipes, and heater drainage pipes

When water tightness and safety are the main considerations, high inlet and low outlet configuration is adopted

Water supply, chemical feed, container air extraction, and extraction drainage system

Turbine sealing components and drainage pipes

Turbine lubricating oil system

Note: For the material table, please refer to the 《HIVAL Valve Brochure (V4.0.1—202602--HK)》

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