Welded Bonnet Forged Globe Valve

Welded bonnet forged globe valve is a high-performance globe valve that uses a forging process to manufacture the valve body and connects the bonnet and the valve body by welding. Its core features are:

Body process: The forging process ensures high material density and excellent mechanical strength, suitable for high pressure (Class 150~3500LB) and high temperature (up to 570℃) working conditions;
Bonnet connection: Welding replaces the traditional bolt connection to achieve a fully sealed structure and avoid the risk of flange leakage, especially suitable for long-term maintenance-free or extreme working conditions.

Performance advantages

Sealing reliability:

The welded bonnet has no bolt gap, eliminating the hidden danger of medium leakage, and is suitable for high-risk media such as hydrogen and natural gas;
After the valve body and bonnet are welded, the overall strength is improved and the ability to resist internal pressure is enhanced.
‌Pressure and temperature resistance‌:

The forged valve body supports high pressure levels (such as 300LB, 3500LB), suitable for high pressure pipeline systems such as petrochemicals and power stations;
The design temperature covers -29℃~570℃, meeting the needs of high temperature steam and low temperature media.
‌Long life and maintainability‌:

The boltless structure reduces corrosion points and extends the service life of the valve;

It is suitable for highly corrosive environments (such as sulfur-containing oil and gas), and the erosion resistance of the welding interface is better than that of the flange connection.

Structural form:

Flow channel type: straight-through type (DN≤100mm) or angle type to reduce fluid resistance;
Sealing surface treatment: Hard seals use hard alloy (such as Stellite) or metal composite coating to improve wear resistance.
Design specification:

Comply with international standards such as BS 1873, API 602, etc., and adapt to flange end (ANSI B16.5) or butt welding end connection;
Typical model example: J61Y-F304 (welded valve cover + forged valve body + hard seal).

 

Welded Bonnet Forged Globe Valve

 

Applications
‌Energy field‌: high-temperature steam pipelines in thermal power plants, cooling systems in nuclear power plants; ‌

Petrochemical industry‌: cut-off and anti-backflow control of sulfur-containing crude oil and natural gas pipelines; ‌

Special media‌: closed transportation of high-risk media that are prone to leakage, such as hydrogen and liquid ammonia.

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