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Stainless Globe Valve The selection principle is:
Stop valves should be used on pipelines or devices with high temperature and high pressure media. Such as thermal power plants, nuclear power plants, and high temperature and high pressure pipelines in petrochemical systems.
On pipelines where the flow resistance requirements are not strict. That is, where the pressure loss is not considered.
Small valves can be selected from needle valves, surface valves, sampling valves, pressure gauge valves, etc.
There are flow regulation or pressure regulation, but the regulation accuracy requirements are not high, and the pipeline diameter is relatively small, such as pipelines with a nominal diameter of ≤50mm, it is suitable to use.
Small fertilizers and large fertilizers in synthetic industrial production should use high-pressure angle stop valves or high-pressure angle throttle valves with a nominal pressure of PN160, a nominal pressure of 16MPa, or PN320, a nominal pressure of 32MPa.
In the desiliconization workshop and pipelines prone to coking in the Bayer process of alumina production, it is easy to use a direct-flow stop valve or direct-flow throttle valve with a split valve body, a removable valve seat, and a hard alloy sealing pair.
In water supply and heating projects in urban construction, stop valves, balancing valves or plunger valves can be used for pipelines with smaller nominal diameters, such as pipelines with nominal diameters less than 150mm.
The most significant advantages of stop valves are:
During the opening and closing process, the friction between the valve disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. The opening height is generally only 1/4 of the diameter of the valve seat channel, so it is much smaller than that of the gate valve. Usually there is only one sealing surface on the valve body and the valve disc, so the manufacturing process is better and easy to repair.

Nominal pressure or pressure level: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K
Nominal diameter or caliber: DN10~500, NPS 1/2~36"
Connection method: flange, butt welding, thread, etc. Applicable temperature: -196℃~700℃
Drive method: manual, bevel gear transmission, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage
Valve body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8(304), CF3(304L), CF8M(316), CF3M(316L), Ti. Different raw materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.