A shutoff valve installed on the discharge side of a pump to automatically shutoff hazardous liquid flow in the event of a rupture on the downstream side of the shutoff valve. The shutoff valve operat
7. A combination plug shut-off and double check valve comprising: Description: SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a superior combination shut-off and check valve for use at the meter in providing a domestic water service connection under the cod...
Main Building gas shutoff valve located at the gas meter A main building gas shutoff valve are normally located at the main gas meter. An additional shutoff valve may be located in the street or sidewalk outside of the building - a device that cannot be readily seen nor used by a build...
Compression valves, also known as multi-turn valves, are usually globe valves. They feature a stem with a rubber washer on the end, which is attached to the valve handle. When turned, the stem moves into the cavity of the valve, compressing the washer against the internal seat and forming...
An apparatus for use with a manual water valve having a rotatable valve stem, for preventing water damage by automatically closing the water valve upon sensing water leaking from a source downstream from said water valve. The apparatus comprises at least one water sensor including a housing having...
In steam heating systems which are not provided with return pipes for the condensation products of the system, leakage of water from the radiators when the steam is wholly or partially shut off has always been a serious menace to property. When the valve at the radiator is shut off, in the...
A flow shut-off valve shuts off natural gas if there is a break in a gas line, for example, the line to a water heater toppled by an earthquake. The shut-off valve is fitted into a standard pipe nippl