Check Valve for Abrasive Blaster Pressure Vessel
OwnerPhuong Taylor Nguyeninventor
Life of this patent
Estimating the term…
Abstract
A check valve is installed in the pressure flow line of an abrasive blaster of the type having a pop-up valve which opens under pressure and closes when depressurized to a predetermined level. The check valve is upstream of the pop-up valve and includes a having a valve chamber in communication with the pressure system for seating a valve mechanism adapted for opening and closing the valve chamber in response to the pressure level in the pressure system for closing the pressure system to back flow when the pressure in the system reaches a predetermined level.
Claims11
A check valve for a pressure system for pressurizing the pressure chamber of an abrasive blaster of the type having a pop-up valve which opens under pressure and closes when depressurized to a predetermined level, the check valve being positioned in the pressure system upstream of the pop-up valve, the check valve comprising:
- a. a valve body having a valve chamber in communication with the pressure system for seating a valve mechanism;
- and
- b. a valve mechanism seated in the valve chamber and adapted for opening and closing the valve chamber in response to the pressure level in the pressure system for closing the pressure system to back flow when the pressure in the system reaches a predetermined level.
A ball check valve for a pressure system for pressurizing the pressure chamber of an abrasive blaster of the type having a pop-up valve which opens under pressure and closes when depressurized to a predetermined level, the ball check valve being positioned in the pressure system upstream of the pop-up valve, the ball check valve further having a central bore therethrough in communication with the pressure stream in the system, the ball check valve comprising:
- a. a valve body having a chamber including a ball seat
- b. a ball valve mechanism seated in the valve chamber and adapted for opening and closing the valve chamber in response to the pressure level in the pressure system for closing the pressure system to back flow when the pressure in the system reaches a predetermined level;
- c. a bleed hole in the valve body which is always open;
- and
- d. a retainer in the valve body for retaining the ball valve mechanism in the chamber during operation.
Dependencies are inferred from the claim text.