Patent ID: 6269840
Filing Date: 2001-08-07
Classification: B60H,F16K,F25B,Y10T

Abstract:
A valve in valve assembly comprising:a main valve housing having an internal passage and a throughbore having a first end open to the internal passage;a valve body positioned in the throughbore and movably operable to control fluid flow through the passage;a chamber in the valve body, the chamber being open to the passage at a first chamber end and open to the throughbore at a second chamber end; anda flow control device located in the chamber at the first chamber end and controlling access between the chamber and the passage, wherein the flow control device comprises a valve core including a bore, a valve seat about the bore, a biasing device, and a valve stem, the bore linking the passage and the chamber, the valve stem having a first portion located within the bore and the valve stem having a second portion proximal the internal passage and biased by the biasing device to an inoperative position blocking the bore by engaging the valve seat.