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1" Copper Reducing Valve, Female Union x Female Reviews

4.9 Rating 44 Reviews
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This precision-engineered 1-inch water pressure regulator represents a specialized control solution manufactured from copper silicon alloy for high-performance plumbing installations where incoming municipal water supply pressures exceed safe operating thresholds.  The female union inlet paired with female NPT outlet configuration distinguishes this pressure reducer from standard threaded models, enabling rapid disconnection for maintenance while preserving downstream pipe integrity.  Municipal water pressure frequently arrives between 80-150 PSI, creating excessive strain on fixture connections, appliance valves, and distribution piping throughout residential and commercial structures. This 1" copper reducing valve actively moderates these elevated pressures down to adjustable settings between 25-75 PSI, with factory calibration at 50 PSI delivering optimal protection for standard plumbing system components. The copper silicon alloy body construction provides superior corrosion resistance compared to standard brass alternatives, particularly in water supplies with elevated mineral content or chlorination levels. This 1-inch pressure regulator integrates a replaceable polymer seat module, reinforced diaphragm assembly, and integral stainless steel strainer within a compact housing measuring approximately 8-3/4 inches from inlet to outlet centerline. Cast Copper Silicon Alloy Construction & Advanced Metallurgical Engineering Properties The valve body utilizes copper silicon alloy casting technology that delivers exceptional strength-to-weight characteristics while maintaining complete lead-free compliance for potable water contact surfaces. This specialized copper alloy formulation contains silicon additives that enhance tensile strength beyond pure copper grades, preventing stress cracking under thermal cycling between 33-160°F operating extremes.  The 1" female union x female configuration features precision-machined NPT threads conforming to ASME B1.20.1 specifications, ensuring leak-proof connections without excessive tightening torque that could damage fixture threads. Internal passages within this copper pressure reducing valve maintain smooth bore transitions that minimize turbulence and pressure drop during water flow events. The copper silicon alloy composition resists dezincification corrosion mechanisms that plague standard brass valves in aggressive water chemistry environments.  Cast copper provides superior heat dissipation compared to brass alternatives, preventing thermal degradation of internal elastomer components during high-volume flow conditions in commercial applications. The 1-inch nominal size accommodates flow rates up to 35 gallons per minute while maintaining stable downstream pressure regulation, making this valve suitable for whole-house water supply installations or dedicated equipment feed lines requiring consistent pressure delivery. The union connection at the inlet incorporates a compression nut and tail piece design that facilitates tool-free disassembly, eliminating the need for pipe cutting during routine inspection or seat replacement procedures. Surface finish on cast copper components exhibits minimal porosity, reducing bacterial colonization risks in potable water applications. Precision Diaphragm-Actuated Pressure Control Mechanism & Spring-Loaded Valve Operation This direct-acting pressure regulator employs a reinforced EPDM diaphragm assembly that responds instantaneously to downstream pressure fluctuations without requiring external power or pilot lines.  The diaphragm separates the spring chamber from water passage areas, translating spring compression force into precise valve seat positioning that throttles incoming high-pressure water supply. As downstream pressure increases toward the setpoint, the diaphragm flexes upward against spring resistance, gradually closing the valve orifice to restrict incoming flow and prevent pressure overshoot. The 1" copper reducing valve incorporates a sealed spring cage with stainless steel screws that permits outdoor or below-grade pit installations without spring corrosion concerns.  The spring assembly provides consistent force characteristics across the 25-75 PSI adjustment range, maintaining regulation accuracy within ±2 PSI of the established setpoint under varying flow demands. An adjustable screw mechanism at the valve top allows

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Linkburchett
Verified Reviewer
“My previous pressure regulator was failing causing me to have crazy pressure swings... My plumber recommended putting two of these in series to reduce the water coming in two stages.”
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Posted 5 years ago
“My existing Watts regulator was failing, making groaning noises. Replaced a 40-year-old 25AUB with this. Fit perfectly. Took 15 mins to install, used Teflon tape and new O-ring. Eliminated noise, no pressure adjustment needed.”
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Posted 6 years ago
“Product works great but packaging was poor. Valve moved freely and box was damaged. Risk of bent screw. Would buy from store next time.”
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Posted 6 years ago
“This product feels solid and is very well-built. I like the fact that it has two service ports on the bottom to maintain this unit in the future. I like that this unit has a union connector built-in as well.”
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Posted 6 years ago
“Replaced our old Watts 25AUB that has a blue tag, from about 1991. This is a direct swap so you won’t have to mess with pipes not lining up as needed. The end with a coupler obviously doesn’t need anything on the threads. I highly recommend using Teflon tape. After rewrapping heavily, it stopped dripping.”
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Posted 6 years ago
“The manufacturer’s box was loosely taped with scotch tape and even that was ripped. The next thing I noticed was there were signs that this item had already been used as there were metal shavings on both ends as if someone forced a fitting in the ends. This was all confirmed by the fact that the threads were marred. The replacement valve is new and in an unopened box...installed without any problems and does not leak.”
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Posted 6 years ago
“Really great heavy duty prv which sorted my problem of low flow rates and bad drops when under load. Installed without ptfe tape on inlet, but ended up with a weeping joint, so took apart and redid using ptfe tape and now works great. My flow rates doubled when i put this in.”
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Posted 6 years ago
“Installed myself in about an hour. Needed careful tightening to avoid leaks.”
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Posted 7 years ago