A pressure relief valve actuated by inlet static pressure and characterized by rapid opening or pop action.
A pressure relief valve characterized by rapid opening or pop action, or by opening in proportion to the increase in pressure over the opening pressure, depending upon the application.
A pressure relief valve in which the major relieving device is combined and controlled by a self actuated auxiliary pressure relief valve.
A power actuated pressure relief valve in which the major relieving device is combined with and controlled by a device requiring an external source of energy.
Gas Regulators that can provide both pressure and fire protection for storage tanks by supplying a blanketing gas which maintains a constant positive pressure in the vapor space of a storage tank.
A pressure relief device designed to admit fluid to prevent an excessive internal vacuum; it is designed to re-close and prevent further flow of fluid after normal conditions have been restored.
A non-re-closing pressure relief device actuated by the static differential pressure between the inlet and outlet of the device and designed to function by the bursting of the pressure containing disc.
Emergency Pressure Relief Devices designed to be used on tanks containing non-volatile liquids and on vent pipe extremities.
Emergency Pressure Relief valve designed to provide emergency relief capacity beyond that furnished by the normal operating pressure relief valve on the tank.
Overpressure protection for unfired pressure vessels and plant systems used with corrosive and high purity liquids, gases and vapors.