1. Who produces 310S check valve?

Freeman Valve produces 310S check valve, including 310S swing check valve, 310S lift check valve, 310S piston check valve, 310S wafer check valve.

2. To which countries does Freeman Valve supply 310S check valve?

Freeman Valve supplies 310S check valve to countries such as the United Kingdom, Germany, Austria, France, Italy, Spain, Portugal, Denmark, Finland, Sweden, the United States, Canada, and Mexico.

3. What are the advantages of 310S check valve?

3.1 310S check valve are the preferred material for high temperature and extremely high temperature fields. They can work continuously at temperatures of 1050°C (1922°F). Therefore, 310S check valve are widely used in furnace manufacturing and heat treatment equipment.

*In oxidizing atmospheres with sulfur content of 2 g/m3 or less: 310S check valve can be used continuously at 1050°C (1922°F) with a peak temperature of 1100°C (2012°F);

*In oxidizing atmospheres with sulfur content exceeding 2 g/m3: 310S check valve can be used continuously at 950°C (1742°F);

*In low oxygen atmospheres with sulfur content of 2 g/m3 or less: 310S check valve can be used continuously at 1000°C (1832°F);

*In low oxygen atmospheres with sulfur content exceeding 2 g/m3: 310S check valve can be used continuously at 750°C (1382°F);

*In nitriding or carburizing atmospheres: 310S check valve can be used continuously at 1000°C (1932°F).

3.2 310S check valve have strong corrosion and oxidation resistance:

Stainless steel 310S is a low-carbon version of stainless-steel SS 310. Stainless steel 310S is composed of 20% nickel and 25% chromium, so stainless steel 310S is very effective in reducing environments (such as sulfur). And because of the low carbon content, stainless steel 310S can also effectively resist embrittlement.

3.3 310S check valve have low thermal conductivity, which is ideal for hot water or steam systems.

3.4 310S check valve have good toughness and low magnetic permeability, which is ideal for low-temperature applications. The minimum operating temperature of the 310S check valve is around -268°C (-450°F), which means it can be used in extremely low temperatures; however, due to its excellent oxidation resistance, its main use is still in the high temperature field.

1. Who produces 310H check valve?

Freeman Valve produces 310H check valve, including 310H swing check valve, 310H lift check valve, 310H piston check valve, 310H wafer check valve..

2. To which countries does Freeman Valve supply 310H check valve?

Freeman Valve supplies 310H check valve to countries such as the United Kingdom, Germany, Austria, France, Italy, Spain, Portugal, Denmark, Finland, Sweden, the United States, Canada, and Mexico.

3. What are the advantages of 310H check valve?

3.1 Stainless steel 310H is a high carbon version of Stainless-steel 310. 310H has good resistance to oxidation and thermal fatigue, making it the check valve of choice for high and ultra-high temperature applications, operating continuously at temperatures up to 1050°C (1922°F). Its corrosion resistance in high temperature environments exceeds that of many other stainless-steel alloys. It is used in the heat-treating industry, including sealing of concentrated acids.

3.2 310H is frequently exposed to sulfur dioxide environments and is highly resistant to the negative effects as well as the effects of high temperature oxidation. This metal also exhibits enhanced resistance to creep corrosion.

*In oxidizing atmospheres with sulfur content of 2 g/m3 or less: 310S check valve can be used continuously at 1050°C (1922°F) with a peak temperature of 1100°C (2012°F);

*In oxidizing atmospheres with sulfur content exceeding 2 g/m3: 310S check valve can be used continuously at 950°C (1742°F);

*In low oxygen atmospheres with sulfur content of 2 g/m3 or less: 310S check valve can be used continuously at 1000°C (1832°F);

*In low oxygen atmospheres with sulfur content exceeding 2 g/m3: 310S check valve can be used continuously at 750°C (1382°F);

*In nitriding or carburizing atmospheres: 310S check valve can be used continuously at 1000°C (1932°F).

4. What are the disadvantages of 310H check valve?

*Since 310H has a higher carbon content than 310S, 310H is less resistant to water corrosion than 310S. Its high carbon content is a limitation in humid environments;

*Due to its high carbon content, 310H is not recommended for continuous use between 425–860°C because carbides will precipitate.