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Milwaukee Valve 1174 Series Bronze Gate Valve, Heavy Duty Service, Class 200, Rising Stem, 1" NPT Female
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About Milwaukee Valve 1174 Series Bronze Gate
This class 200 Milwaukee Valve 1174 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 union bonnet provide higher strength and resistance to corrosion than brass. The stainless-steel seat rings equip the valve for high pressure applications and help resist corrosion over time. It has a rising stem that moves up and down with the gate that provides a visual signal (when extended) that the valve is open. This stem design and 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 400 pounds per square inch (gauge) (psig) for water, oil, and gas pressure (WOG) and 200 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. The class 200 valve meets Manufacturers Standardization Society (MSS) SP-80 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 heavy duty service in plumbing and heating 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 gas and liquid service, includin
