초록 ▼

A bi-directional flow filter including a block having first and second peripheral ports with a forward line of flow through the block from the first peripheral port to the second peripheral port and a reverse line of flow through the block from the second peripheral port to the first peripheral port

A bi-directional flow filter including a block having first and second peripheral ports with a forward line of flow through the block from the first peripheral port to the second peripheral port and a reverse line of flow through the block from the second peripheral port to the first peripheral port. A first check valve and a first filter element are disposed in the forward line of flow to allow flow only in the forward direction through the first filter element. A second check valve and a second filter element disposed in the reverse line of flow to allow fluid flow only in the reverse direction through the second filter element. First and second filter element cavities are positioned in the block in a generally side-by-side relation with the first port in one block face and the second port in the opposite block face. First and second filter elements are disposed in their respective cavities and filter in the respective forward and reverse directions fluid entering the first and second ports, respectively.

대표청구항 ▼

A filter for filtering fluid flowing in either direction through a conduit, said filter comprising: a block having first and second peripheral ports adapted to be connected to respective sections of bi-directional fluid flow conduit; first and second filter element cavities in said block, each suppo

A filter for filtering fluid flowing in either direction through a conduit, said filter comprising: a block having first and second peripheral ports adapted to be connected to respective sections of bi-directional fluid flow conduit; first and second filter element cavities in said block, each supporting therein a filter element to respectively filter fluid passing therethrough in a respective single direction, said first filter element cavity being in direct communication with said first peripheral port so fluid entering said first port is filtered by said filter element in said first cavity, said second filter element cavity being in direct communication with said second peripheral port so fluid entering said second port is filtered by said filter element in said second cavity, said filter element cavities being positioned in said block in a generally side by side relation with said first peripheral port in one face of said block and said second peripheral port in the opposite face of said block; a first passage in said block communicating the downstream side of said filter element in said first filter element cavity with said second peripheral port; a second passage in said block communicating the downstream side of said filter element in said second filter element cavity with said first peripheral port; and check valve means for controlling the flow of fluid in each said first and second passages so fluid can only flow through each passage in the direction to said respective peripheral ports.