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Milwaukee Valve 1150 Series Bronze Gate Valve, General Service, Class 150, Rising Stem, 3/8" NPT Female
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About Milwaukee Valve 1150 Series Bronze Gate
This class 150 Milwaukee Valve 1150 series bronze gate valve has a rising stem and female National Pipe Taper (NPT) threads on both ends. The bronze construction, solid wedge gate, and threaded bonnet provide higher strength and resistance to corrosion than brass, and it has a rising stem that moves up and down with the gate to offer a visual signal (when extended) that the valve is open. This stem design and the graphite internal packing also prevent the stem threads from coming into contact with flow to avoid corrosion to extend valve life. The maximum pressure is 300 pounds per square inch (gauge) (psig) for water, oil, and gas pressure (WOG) and 150 psig for saturated steam pressure. It has female NPT threads on both ends for connecting to male threaded pipes. Mounted on top of the valve, a manually operated malleable iron hand wheel activates the inside screw mechanism, which lifts and lowers the gate to start and stop the flow between the connected pipes. This class 150 valve meets Manufacturers Standardization Society (MSS) SP-80 (with the exception of the 4-inch model of this valve, as it has a split wedge and bolted bonnet that does not meet MSS SP-80) standard for quality assurance. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure. The valve is appropriate for use in general service in plumbing and heating piping systems. Gate valves control flow in a piping system by lifting a gate out of the path of steam, fluids, or gases. They are designed to block or permit flow, as the vibrations and force of flow repeatedly striking a partly lowered gate can damage the gate and seats. To accommodate different flows and pressure requirements, gates come in four types: solid wedge (appropriate for almost all liquid service), flexible wedge (appropriate for steam service), split wedge (appropriate for normal temperature, non-condensing
