1, electrical appliance and home appliance stores: many large appliance stores or appliance specialty stores have sales areas for pressure cookers and their accessories. You can visit your local appliance store and ask if they stock pressure cooker air valves.

2, kitchen supply stores: some stores specializing in the sale of kitchen supplies and cooking utensils also offer sales of pressure cookers and their accessories. You can look for pressure cooker air valves at your local kitchen supply store.

3, online shopping platforms: many e-commerce platforms such as Amazon, Jingdong, Taobao, etc. offer a variety of cooking utensils and kitchen supplies for sale. You can search for pressure cooker gas valve on the platform, choose the right product and buy it online.