The invention is a fluid discharge valve wherein the force necessary to mtain the valve in a closed position in the absence of fluid pressure is kept at a very nominal pressure. The fluid discharge valve further provides for the force on the valve body to increase proportional to the pressure up to a pre-determined value. At this pre-determined value, means are provided to open the valve and thereby allow fluid to pass. The invention provides for a discharge valve which maintains its initial cal...

A discharge valve for controlling the discharge flow of water from the delivery end of a fire pump including a valve body having an integral extension portion forming an inlet waterway for delivering water from the delivery end of the fire pump to the valve chamber of the discharge valve, a valve cover having an integral discharge portion for directing the water to the fire hose in a downward direction, and a push-pull drain valve formed integrally with and contained within the valve cover.

There is disclosed an improved sheet metal muffler for attenuating the sound of the gas discharged from a hermetic refrigeration compressor, wherein the muffler generally comprises a sheet metal casing having a hollow interior which is divided into two substantially equal chambers by a central baffle, with a restrictor tube extending through the baffle for placing the chambers in communication with one another, the restrictor tube being provided with a flared entrance portion at its upstream end...

Finely divided particulate solids are discharged from a high pressure zone to a low pressure zone, e.g. to atmospheric pressure, by passing a dense bed of this particulate material through a long discharge channel and past a throttle element. The pressure drop across the throttle element is significantly reduced due to the fact that the moving dense bed in the discharge channel dissipates the pressure drop along this channel leaving only a small pressure drop to be achieved across the throttle e...

A discharge tube has a sealed envelope filled with a gas; an anode, cathode and shielding electrode built in the sealed envelope; and electrode holding pins. At least eight electrode holding pins penetrate a button stem so as to be arranged at predetermined intervals on a circle coaxial with the button stem, and, of at least eight electrode holding pins, at least three hold the cathode, at least three hold the shielding electrode, and at least two hold the anode.

A discharge lamp comprises a cylindrical lamp casing substantially formed of a metallic material, a transparent glass plate air-tightly fitted to one of the opened end of the lamp casing, a sealing stem air-tightly closing the other opened end of the lamp casing, and a pair of cathode and anode elements sealed in the lamp casing together with discharge gas. The lower portion of the lamp casing may be made in square or circular structure and may be composed of a metallic cylindrical portion exten...

A discharge recording blank comprises a paper backing having a conductive surface formed by a base coating of conductive powdered carbon, and an outer powdered coating formed on the conductive surface. The outer powdered coating consists of nonconductive finely divided powder such as resin powder and/or pigment powder which is selected from white, gray or colored organic or inorganic pigment. The outer powdered coating is removed in localized areas in response to applied electric signals so as t...

An elongated discharge lamp which is particularly intended for use in photo-chemical reaction processes. The discharge tube of the lamp is supported at its ends by two end mountings, one of which carries the input terminals for the lamp. A conductor extending along the length of the discharge tube joins one of the terminals to the electrode at the remote end of the tube, and the tube and conductor are separately enclosed in respective transparent tubular envelopes sealed to the end mountings at ...

An additive-type mercury discharge lamp includes an arc tube comprising a radiation-transmitting sealed tubular body having a pair of electrodes arranged therein and filled with a discharge-sustaining filling including mercury, a rare gas and at least one halogen in elemental form or in the form of a metal halide. The electrodes are coated with at least one rare earth metal oxide, and the filling includes a substance which reacts with the oxide of the rare earth metal to convert the same to a ha...

A gas cleansing apparatus and more particularly an electrostatic precipitating apparatus having improved discharge electrode means therein.