1 1/4" Watts LFU5B-Z3 Pressure Reducing Valve
Item Number: 0009180
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$4,214.25
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Brand - Watts
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- Size: 1 1/4 inch
- Weight: 47.1 lb
- Lead Free* cast copper silicon alloy body construction
- Adjustable Reduced Pressure Range: 25-75 psi
- Maximum Working Pressure: 300 psi
- Temperature Range: 33°F - 180°F
- NPT Female Union inlet x NPT Female outlet
- Serviceable in line without special tools
- Bypass feature for thermal expansion pressure
Description
Description
The 1 1/4 inch Watts LFU5B-Z3 is a Lead Free Water Pressure Reducing Valve designed to protect plumbing systems and reduce water consumption in commercial, industrial, and residential settings. Constructed from lead-free cast copper silicon alloy, it features NPT female union inlet and NPT female outlet connections. The valve offers an adjustable pressure range of 25-75 psi, with a standard setting of 50 psi, and can handle a maximum working pressure of 300 psi. Its bypass feature manages thermal expansion pressure, and the unit is serviceable in-line for easy maintenance. Item number 0009180.

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Additional Details
This 1 1/4 inch Watts LFU5B-Z3 Lead Free Water Pressure Reducing Valve is designed to reduce incoming water pressure to a sensible level, protecting plumbing system components and reducing water consumption in commercial, industrial, and residential applications.
Key Features
- Features Lead Free* construction to comply with installation requirements.
- Bypass feature permits flow of water back through the valve into the main when pressures due to thermal expansion exceed the main supply pressure.
- Includes a Z3 sealed spring cage and stainless steel corrosion resistant adjusting cage screws for accessible outdoor or pit installations.
- Equipped with an integral stainless steel strainer that is easily removable for cleaning.
- Designed for in-line serviceability, allowing parts to be replaced without removing the valve from the line and without special tools.
- High temperature resistant reinforced diaphragm for hot water.
- Replaceable seat module for easy maintenance.
Connections
- Inlet: 1 1/4 inch NPT Female Union thread.
- Outlet: 1 1/4 inch NPT Female thread.
Specifications
- Body Material: Lead Free* cast copper silicon alloy
- Seat Material: Replaceable stainless steel
- Integral Strainer Material: Stainless steel
- Diaphragm Material: Reinforced EPDM
- Valve Disc Material: EPDM
- Yoke Material: Lead Free* cast copper silicon alloy
Performance
- Maximum Working Pressure: 300 psi (20.7 bar)
- Adjustable Reduced Pressure Range: 25-75 psi (172-517 kPa)
- Standard Reduced Pressure Setting: 50 psi (345 kPa)
- Temperature Range: 33°F - 180°F (0.5°C – 82°C)
Connections
- Inlet Connection: 1 1/4 inch NPT Female Union
- Outlet Connection: 1 1/4 inch NPT Female
Certificates & Approvals
- ASSE Standard 1003
- ANSI A112.26.2
- CSA Standard B356
- IAPMO Listed
- Southern Standard Plumbing Code
- NSF/ANSI 61-G Certified
FAQs
What is the primary function of the Watts LFU5B-Z3 valve?
The Watts LFU5B-Z3 valve is designed to reduce incoming water pressure to a manageable level, protecting plumbing system components from high pressure and helping to reduce water consumption.
What type of connections does this valve have?
This valve features a 1 1/4 inch NPT Female Union inlet and a 1 1/4 inch NPT Female outlet, making it suitable for threaded pipe connections.
What is the adjustable pressure range for this valve?
The adjustable reduced pressure range for this valve is 25-75 psi (172-517 kPa), with a standard factory setting of 50 psi (345 kPa).
Is this valve suitable for hot water applications?
Yes, the valve features a high temperature resistant reinforced diaphragm and has a temperature range of 33°F - 180°F (0.5°C – 82°C), making it suitable for hot water.
Can this valve be repaired without removing it from the plumbing line?
Yes, a key feature of the LFU5B-Z3 series is that all parts are quickly and easily serviceable without removing the valve from the line, and without requiring special tools.