What does the stainless steel valve seat do?

As a sealing material, stainless steel fire extinguisher valve seat plays a very important role in many accessories of fire extinguishers.

We have learned that there are actually many types of sealing materials, which are filled in the joints, cracks, door and window frames, glass perimeters, pipe joints or connections with other structures of buildings, which can block the medium through the leakage channel and play a role in Water-tight and air-tight materials. Sealing materials include metal materials (aluminum, lead, indium, stainless steel, etc.), non-metallic materials (rubber, plastic, ceramic, graphite, etc.), composite materials (such as rubber-asbestos board, aerogel felt-polyurethane), but The most used are rubber-like elastomer materials.

For example, in order to ensure the effect of waterproof sealing, building sealing materials should have high water tightness and air tightness, good adhesion, good high and low temperature resistance and aging resistance, and certain elastic-plastic and tensile-compression cycle performance. The selection of sealing materials should first consider its bonding properties and use parts. The good bonding between the sealing material and the substrate to be adhered is a necessary condition to ensure the sealing. Therefore, a sealing material with good adhesion should be selected according to the material, surface state and properties of the substrate to be adhered. For the joints in different parts of the building, the requirements for the sealing materials are also different. For example, the outdoor joints require higher weather resistance, while the expansion joints require better elastic-plastic and tensile-compression cycle performance.

The sealing material should generally have good physical and mechanical properties, high resilience, small compression set, reliable sealing, convenient processing and long service life.

So this kind of material doesn't look small and inconspicuous, but its role is very important.