I what are the globe valve and bellows globe valve

1.Globe Valve The globe valve is one of the most widely used valves. It stops the flow of medium by relying on the lever pressure to tightly combine the sealing surface of the valve plate and the valve seat.

2.Bellows Globe Valve The bellows globe valve also belongs to the globe valve and is an improved version of the globe valve. The main difference between them is that the metal bellows replaces the traditional packing seal. One end of the bellows is welded to the valve stem, and the other end is welded to the valve, completely isolating the medium from the external environment.

II. Same Function

The basic functions of a gate valve and a bellows gate valve are the same – they are both used for the closure of pipelines and the regulation of flow.

III. Differences

name	globe valve	below globe valve
Seal	Filler seal, prone to aging and leakage.	Metal hard seal, zero leakage outside
Cost and maintain	Simple structure, low cost,  convenient maintenance and replacement	complex process，high cost
medium	water, steam, oiletc.	toxic, flammable and explosive substances
Service life	packing is prone to wear and needs to be replaced regularly.	Longer sealing life

IV application scenarios

It is widely used in water supply, drainage, exhaust systems, industrial and civil pipelines for chemical processes, oil and natural gas, etc.

Applied to the petroleum, chemical, pharmaceutical, fertilizer, and power industries, etc.