The Protectoseal Company

William J Zehr

Thomas C Piotrowski

Scott R Diaz

An improved valve is provided for blanketing and maintaining the vapor space of a tank with inert gas at a set pressure. The valve is of the type that incorporates a pilot valve that operates in response to sensed tank vapor space gas pressure. The opening and closing of the pilot valve controls the opening and closing of an associated main valve which admits pressurized inert gas into the tank from an inert gas supply to maintain the tank set pressure. The valve permits one to externally adjust internal components of the pilot valve after valve assembly. Also, the valve provides for pressure balanced operation that achieves a consistent opening pressure over the allowable range of inlet gas supply pressures.

Tank blanketing valve

A method and means for removing the fire extinguisher dry powder from its pressurized cylinder using a vacuum pump and appropriate apparatus and collecting the powder in a drum and to prevent powder degradation. The apparatus is simple to operate and provides a clean, fast method for discharging and removing dry chemical powder from fire extinguisher cylinders.

Fire extinguisher discharge station

A tilt can or container for pouring flammable liquids having means for simultaneously venting the can when opening the pouring spout.

Tilt can

A compact filling station for fire extinguisher cylinders wherein the cylinder is weighed as the fire extinguishing material is fed therein to determine the correct quantity in said cylinder and said cylinder is filled by using a vacuum.

Fire extinguisher cylinder filling station

A device for rupturing a pressurized cylinder containing a fire extinguishing product wherein when the temperature is high enough to melt the fusible link, it will cause a spring-loaded punch to forcibly propel the punch downwardly to rupture a rupturable disk in the cylinder to allow the contents to be ejected therefrom.

Growing community of inventors

Des Plaines, IL, United States of America

William J Zehr