Watts 0009128 Valve

The Watts 0009128, specifically the LFU5B-LP-Z3, is a high-performance 3/4 inch water pressure reducing valve designed for low-pressure domestic and commercial applications. Engineered with a lead-free cast copper silicon alloy body, this valve handles initial supply pressures up to 300 psi while maintaining a precise adjustable reduced pressure range of 10 to 35 psi. This model serves as the primary Watts 0009128 replacement for legacy units including 0051209, 0051210, 0057125, and 0059845. It features a Z3 sealed spring cage and corrosion-resistant stainless steel adjusting screws, making it ideal for outdoor or pit installations where environmental exposure is a factor. The integral stainless steel strainer and replaceable seat module allow for full inline servicing without removing the valve body from the piping, minimizing downtime for system maintenance.

• Low Pressure Regulation: Special LP configuration provides accurate control between 10-35 psi, factory set at 30 psi.
• Lead-Free Construction: Complies with low-lead safe drinking water requirements for potable water systems.
• Thermal Expansion Bypass: Integrated bypass feature prevents excessive pressure buildup caused by thermal expansion in closed systems.
• Durable Infrastructure: High-temperature reinforced EPDM diaphragm and stainless steel internal components ensure longevity in demanding hydronic environments.
• Versatile Connectivity: 3/4" female NPT union inlet by female NPT outlet simplifies installation on standard threaded pipe.

Is the Watts 0009128 suitable for high-pressure irrigation lines?
This valve is specifically a low-pressure model (10-35 psi). If your application requires standard residential pressure (50 psi+), use the standard LFU5B-Z3 series instead.

Can I service this valve without cutting the pipe?
Yes, the 0009128 is designed for inline serviceability. The seat module and strainer can be accessed and replaced while the valve body remains in the line.

Does this unit prevent backflow?
While it includes a bypass feature to handle thermal expansion, it is a pressure reducing valve, not a dedicated backflow preventer. System designers should include appropriate backflow prevention according to local codes.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.