Used WELCH 1397 #9037019 for sale

WELCH 1397 is a dry scroll pump. It is a rotary, positive displacement pump typically used to move gases and vapors. It works by creating a sealed chamber which is then compressed by a spiral-shaped inner scroll. This compression action increases the pressure of the gas or vapor, causing it to be expelled from the chamber. 1397 pump is composed of several components. These include an inlet, outlet, and motor; a scroll assembly; and a float minimum pressure valve. The inlet and outlet sections of the pump are located near the top and bottom of the cylinder respectively, with the float minimum pressure valve being positioned in between. External connections to the inlet and outlet allow for the pump to be connected to a line of gas or vapor. WELCH 1397 motor is a direct-drive electrical motor with a variable speed control. This allows for the rotational speed of the scroll assembly to be dictated to, giving operators flexibility in the flow rate of the pump. The scroll assembly located in the center of the cylinder is responsible for the compression action. This assembly consists of two spiral-shaped scrolls that are connected, wrap around each other, and rotate in opposite directions. This action causes pockets of air to form in the gaps between the scrolls. As the scrolls rotate, these pockets are opened and closed, leading to the compression of the gas or vapor. This increase in pressure then pushes the gas out of the chamber through the outlet. 1397 also includes a float minimum pressure valve, located between the inlet and outlet. This valve prevents the pressure in the chamber from dropping below a set point, maintaining a specific pressure level in the chamber and ensuring that the pump provides consistent performance. WELCH 1397 is typically used in a variety of industrial applications due to its ability to sequentially displace and compress air. This pump can be used to supply high-pressure air, vacuum systems, and fill various containers with liquids. Overall, this pump is a dependable and versatile choice that provides consistent performance.