The bellows globe valve is also called
the bellows seal globe valve. Through automatic roll welding, a metal barrier is formed between the flowing medium and the atmosphere to ensure zero leakage of the valve stem. Compared with the traditional
globe valve, the bellows seal one has the following advantages:
1.
The bellows globe valve has a long service life, low maintenance and low operating costs. Robust bellows seal design ensures zero leakage of the valve stem and provides free maintenance.
2. The opening and closing torque of valves is small, which reduces labor intensity and can drive any form of the actuator, convenient for remote control.
3. The appearance is beautiful, and the valve passageway has smooth streamline, which reduces the flow resistance coefficient of the valve. Hence, this valve is a high-quality and energy-saving product.
4. The outside sealing of the valve adopts the bellows seal, graphite gasket seal and stainless steel gasket seal, which is reliable and can be used for a long time without replacing the sealing packing. The leakage caused by the industrial globe valve not only pollutes the environment, but often causes heavy personal and property losses. The bellows seal one is much safer and more stable. And foreign advanced standards are strictly adopted in its design and manufacture.
The Application of
Bellows Globe Valves
The bellows globe valve has no leakage, so it is safe to be used for the high-risk medium.
Bellows globe valves replace the packing seal with closed bellows which can be stretched and compressed, effectively preventing leakage caused by packing losses. Generally, these valves are used for the transmission of the medium with strong permeability. For instance, valves for hydrogen systems. As long as bellows are not damaged, the valve leakage generally not occur. However, the general globe valve is sealed with packing, easy to cause leakage.
