The Lee Company's Catch-All Safety Screens integrate the next level of fine filtration into a rugged, compact, flange mount design. With a nominal hole size rating of 20 microns, these safety screens provide protection for critical components with even the smallest of flow passageways and clearances. The Lee Catch-All Safety Screens are incredibly robust considering their fine filtration rating. These screens incorporate a rugged, calendered, and sintered 316L stainless steel wire mesh weave for maxi-mum strength. Manufactured using a pro-prietary process, Lee Catch-All screens feature a seamless, one-piece design that contains radial convolutions that greatly increase the contamination carrying capacity of the screen. The result is a high strength screen with an optimum amount of protection, in a small package.
April 1886: the Brunkebergs tunnel
First ever example of a ground source heat pump?