Pad for Gas Ballast Check Valve, Edwards, E1/E2M, Part# 26501036 – vacstellar

Replacing this pad is a straightforward job if you are already working on your pump. It is located inside the gas ballast valve assembly. When you have the valve apart, simply remove the old pad and install the new one .

The gas ballast system on your Edwards pump serves an important purpose. It lets a small amount of air or gas into the pump during the compression stage. This helps push out water vapor and other condensable gases before they can turn into liquid inside the pump oil .

The check valve pad is a small sealing component inside the gas ballast valve. It works like a one-way door. It lets gas flow into the pump when needed but prevents oil or other fluids from flowing back out. Over time, this pad can become hard, brittle, or worn from constant use .