Venturi vacuum valve device for saving water

Application Number: 00108326
Application Date: 2000.04.07
Publication Number: 1317684
Publication Date: 2001.10.17
Priority Information:
International: G01F1/44
Applicant(s) Name: John L. Bliss
Inventor(s) Name: JohnO L. Bliss
Patent Agency Code: 31100
Patent Agent: gu junfeng
Abstract A venturi tube vacuum valve has a plunger fit in the tube. It has three openings. The first opening as water inlet is less than the second opening. The are communicated with each other in the plunger to form a small-diameter region and a size-constant big-diameter region, which are communicated. The third opening exposed to atmosphere is between the small-diameter region and the second opening to form a suck-in hole. The second opening communicated with big-diameter region is used to form an outlet in the plunger.