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Apollo 121T Series Bronze Globe Valve, Class 125, Inline, Threaded Bonnet, Bronze Seat, 1-1/4' NPT Female: Household Rough Plumbing Valves: Industrial & Scientific. Apollo 121T Series Bronze Globe Valve, Class 125, Inline, Threaded Bonnet, Bronze Seat, 1-1/4" NPT Female: Household Rough Plumbing Valves: Industrial & Scientific. Inline globe valve with rising stem and threaded bonnet for on/off actuation and flow control (throttling) in a pipeline 。 Bronze valve body and seat for strength and corrosion resistance 。 200 pounds per square inch (gauge) (psig) for cold working pressure (CWP) and 125 psig for steam working pressure (SWP) 。 Threaded bonnet for reduced risk of leakage 。 Female National Pipe Taper (NPT) threads on both ends for connecting to male threaded pipes 。 This class 12 Apollo 121T series inline bronze globe valve has a threaded bonnet, rising stem, bronze seat, and female National Pipe Taper (NPT) threads on both ends, and is used to control flow (throttling) in a pipeline or water plumbing system. The valve body and seat are constructed of American Society for Testing and Material (ASTM) B62 bronze for strength and corrosion resistance.The valve’s maximum pressure is 200 pounds per square inch (gauge) (psig) for cold working pressure (CWP) and 12 psig for steam working pressure (SWP). It has a threaded bonnet for tight assembly and reduced risk of leakage, and female NPT threads on both ends for connecting to male threaded pipes. This class 12 valve meets standard Manufacturers Standardization Society (MSS) SP-0 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. This rising stem globe valve is for use in various pipeline or water plumbing systems. Globe valves control flow rates in a piping system by the lift of a vertical stem and disk, which must be turned to open and close the valve. A seated disc extends into the center of the valve to act as a plug to restrict or open the flow path, depending on how tightly the valve stem is turned. The stem on globe valves can be either rising (moves up as the valve opens) to indicate if the flow is on or off, or non-rising (stem height remains constant when the valve is either open or closed) for use in small spaces. Globe valves are used in various water, gas, air, and steam piping systems that require frequent throttling operations. 。 Conbraco Industries, Inc. manufactures ball, mixing, and relief valves, actuators, water gauges, marine fittings, heating and plumbing products, and backflow prevention devices under the brand. The company, founded in 192 and headquartered in Matthews, NC, meets international standard ISO/IEC 1702:200 and makes products that meet International Organization for Standardization (ISO) and American National Standards Institute (ANSI) standards. 。 。 。 。 。