A valve-style drilling mud screen system comprising a first body having a first portion, a second portion and a third portion, a first drilling mud inlet at a first end of the first portion of the body, a first drilling mud outlet at a second end of the third portion of the body, a rotating subassembly, wherein the rotating subassembly is disposed within the second portion of the first body, wherein the first portion of the first body is fluidly connected to a first end of the rotating subassembly, and wherein a second end of the rotating subassembly is fluidly connected to the third portion of the first body, a pivot subassembly, wherein the pivot subassembly is attached to the rotating subassembly through the second portion of the first body, and a drilling mud screen, wherein the drilling mud screen is disposed within the rotating subassembly between the first drilling mud inlet and the first drilling mud outlet is disclosed. Methods of installing and using the drilling mud screen system are also disclosed.