how to select hard sealing butterfly valve and soft sealing butterfly valve
Butterfly valves are widely used in a variety of industries due to their ease of use and low maintenance requirements. They are popular for regulating flow in pipelines, especially in applications where a large amount of fluid needs to be controlled quickly. There are two main types of butterfly valves- hard sealing butterfly valves and soft sealing butterfly valves.
Here are the key differences between these two valves and some factors that you should consider when selecting between the two:
1. Sealing materials
Soft sealing butterfly valves are designed to have a seal made of rubber or other elastomers that compress and bend to create a seal around the valve disc. Hard sealing butterfly valves, on the other hand, use a metal or polymer seal that is pressed against the valve seat to create a tight seal. The material choice plays a significant role in determining the valve's resistance to corrosion, temperature resistance, and the level of sealing performance.
2. Application type
The application type and characteristics of the fluid to be handled play a vital role in selecting the type of butterfly valve. Soft sealing butterfly valves are suitable for low-pressure applications where a high level of sealing performance is not required. Hard sealing butterfly valves, on the other hand, are more suitable for applications with high operation temperatures and high-pressure fluids.
3. Budget
Price is also a crucial factor in choosing between soft and hard sealing butterfly valves. Soft sealing valves are less expensive than hard sealing valves, and they require less maintenance throughout their lifecycle. However, hard sealing valves are more durable and can handle a more extensive range of applications without failing.
In conclusion, selecting between hard and soft sealing butterfly valves depends on several factors such as application type, required sealing performance, and budget. It is essential to consult with a qualified valve professional to ensure that you choose the valve that best suits your application requirements. Ultimately, whether you choose hard or soft sealing butterfly valves, you can benefit from low maintenance requirements, a long service life, and excellent performance.
