This Milwaukee Valve UP105 Ultra Pure series bronze gate valve has a non-rising stem, female National Pipe Taper (NPT) threads, and it is lead-free for potable water plumbing systems. The lead-free bronze construction, solid wedge gate, and threaded bonnet provide higher strength and resistance to corrosion than brass. The valve has a non-rising stem that stays fixed in place when the gate is raised or lowered for low clearance or underground use, and the graphite internal packing helps prevent the valve’s stem from leaking. The maximum pressure is 300 pounds per square inch (gauge) (psig) for water, oil, and gas pressure (WOG). It has female NPT threads for use with 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 valve is appropriate for use in plumbing systems that convey or dispense water intended for cooking or human consumption.
This gate valve is certified to contain no more than 0.25 percent lead by weighted average on its wetted surfaces, and complies with California AB1953, Vermont Act 193, Maryland HB372, and federal public law 111-380 for use with potable water. The valve meets Manufacturers Standardization Society (MSS) SP-80 and National Sanitation Foundation/American National Standards Institute (NSF/ANSI) 372 standards for quality assurance.
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, including corrosive service), and parallel disc (appropriate for high and low pressure applications). Hand wheels or levers activate the screw mechanism in the valve’s bonnet, which comes in various designs, to open and close the gate. Union bonnets are preferable for building service piping, threaded-in (or screw-in) bonnets work well for lighter-duty usage, and bolted body-bonnet connections are used primarily in iron multi-turn valves. Most gate valves have either a rising stem, which moves up and down with the gate, or a non-rising stem, which remains fixed in place. When closed, the gate and its seats form tight planar sealing surfaces, ideal for linear liquid flow. Gate valves are used in air, gas, liquid, and steam applications.
The Milwaukee Valve Company manufactures manual and actuated valves, controls, and control accessories. The company, founded in 1901, and headquartered in New Berlin, WI, meets International Organization for Standardization (ISO) 9001:2008 and 14001:2004 standards.