The Watts LF223-S-B-U-HP 1 is a 1" lead-free pressure reducing valve with single union FNPT connections. It reduces inlet pressure of up to 300 psi to an adjustable 50-145 psi downstream. It features a buna-n seat. Rated to 300 psi and 33°F to 180°F. This model is certified lead-free for potable-water installations.
This 1 inch high capacity lead free water pressure reducing valve is used in high pressure applications and is commonly installed at the meter in residential, commercial and industrial buildings. It is designed to control the water pressure flowing to all the appliances and outlets within the building and provides an inexpensive means of supplying lower, more functional water pressure to outlets and appliances. It features a lead free cast copper silicon alloy body construction, bypass to control thermal expansion pressure, NPT threaded union inlet with strainer by NPT female threaded outlet connections, high temperature resisting enlarged diaphragm for hot or cold temperatures, a sealed spring cage and seat orifice for high capacity performance. The high pressure reduced range is 50 to 145 psi (3.45 to 10.0 bar).
Features
- NPT threaded union inlet with strainer by NPT threaded female outlet
- Lead free cast copper silicon alloy body construction
- Bypass feature controls thermal expansion pressure
- High pressure range 50 to 145 psi (3.45 to 10.0 bar)
- Listed by IAPMO and NSF 61 Commercial Hot
- Disc holder removable for replacement of disc without dismantling the valve, no special tools are required
- Sensitive spring and large diaphragm for accurate pressure control
- High temperature resisting diaphragm for hot or cold water
- Sealed spring cage
- Includes: Strainer
- Includes: Bypass
Common Questions
- Does it have a built-in bypass for thermal expansion, or do I still need an expansion tank?
- LF223-S-B-U-HP 1 includes an integral thermal-expansion bypass. When downstream pressure from a water heater rises above the inlet pressure, the bypass relieves that excess back through the valve toward the supply, which prevents nuisance pressure build-up on a closed system. It is not a substitute for a properly sized thermal expansion tank where your local code requires one - the bypass only relieves back to the street when street pressure is lower, so check the code in your jurisdiction.
- What pressure is it set to out of the box?
- The adjustable reduced-pressure range of LF223-S-B-U-HP 1 is 50 to 145 psi. Verify the outlet setting with a gauge after installation and adjust to your target pressure.
- Does it include a strainer?
- Yes - LF223-S-B-U-HP 1 has an integral stainless steel strainer built into the body, so you do not need a separate inline strainer ahead of it. The strainer is removable for cleaning; if the valve starts to lose downstream pressure, pull and rinse the strainer before assuming the seat has failed.
- Does it come with a gauge?
- No - LF223-S-B-U-HP 1 has no gauge and no gauge tapping. Set the outlet pressure using a gauge elsewhere on the downstream piping. The -GG version of this model ships with a gauge tapping and a 160 psi gauge.
Specifications
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Type: Pressure Regulator
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Size: 1"
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Inlet Size: 1"
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Outlet Size: 1"
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Connection: FNPT
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Seat / Seal Material: Buna-N
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Max Pressure (psi): 300
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Shutoff: None
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Country of Origin: United States
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Warranty: 1 Year Limited
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MPN: LF223-S-B-U-HP 1
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Temperature: 33°F to 180°F
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Certifications: ASSE-1003, ANSI-A112.26, NSF-61, IAPMO
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Lead-Free: Yes
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Adjustable Range - Min (psi): 50
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Adjustable Range - Max (psi): 145
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Thermal Expansion Bypass: Yes
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Integral Strainer: Yes
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Gauge: None
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Union Configuration: Single Union
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Capacity Class: High Capacity
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Regulated Media: Water
