How much is the price difference between soft seal butterfly valve and hard seal butterfly valve?

Soft seal withHard seal butterfly valveHow much is the spread of the In thebutterfly valveOf the sealing methods, soft seal and hard seal are two common types, and in fact, the cost difference between these two sealing methods is not significant. Usually, the price point of hard-sealed butterfly valves is slightly higher than that of theSoft Seal Butterfly Valve. As the caliber decreases, this price difference gradually shrinks, and when the caliber increases, the gap widens. Taking the butterfly valve with a caliber below DN300 as an example, the price difference between soft seal and hard seal is roughly ranging from $100 to $900. The specific price also needs to be determined based on the complete model and parameters.

Soft Seal Butterfly Valve

Hard seal butterfly valve

Butterfly valve in the sealing performance of the soft seal and hard seal difference, mainly reflected in the following aspects:

1. Seal material:

• Soft seal butterfly valves widely use rubber, polyurethane and other flexible materials to make sealing elements, such as EPDM, NBR, PTFE, etc. These materials are known for their excellent elasticity and sealing effectiveness.

• The sealing parts of hard seal butterfly valves are generally made of metal materials, such as stainless steel and cemented carbide, which show excellent resistance in extreme environments such as high temperatures and high pressures.

2. Sealing performance:

• Soft seal butterfly valves are known for their excellent sealing performance, which can effectively cope with the drastic fluctuations of medium pressure and temperature and ensure the stability of sealing performance.

• Hard seal butterfly valves, whose sealing parts are made of metal, thus realizing the hard contact between sealing surfaces, which limits its adaptability to the medium. However, this type of butterfly valve shows higher reliability in extremely harsh environments such as high temperature and high pressure.

3. Durability:

• The sealing parts of soft seal butterfly valves are often susceptible to wear and tear, and their service life is relatively short.

• The sealing parts of hard seal butterfly valves have excellent wear and corrosion resistance, thus significantly extending their service life.

4. Scope of application:

• Soft seal butterfly valves are widely used in all kinds of media transportation system, excellent performance in regular working conditions, applicable to water, air and other media.

• Hard seal butterfly valve is especially suitable for the media quality requirements of strict, and need to withstand high temperature, high pressure and other harsh conditions of the environment, widely used in chemical, petroleum, natural gas and other industries.

According to the specific needs of the project and the characteristics of the medium, the appropriate soft seal or hard seal butterfly valve must be selected to ensure the safe and stable operation of the system and excellent sealing performance.