Description
Watts LFN250BZ 3/4″ Lead-Free Bronze Water Pressure Regulator with Bypass — 20 PSI Preset
The Watts 0121246 is a 3/4″ lead-free bronze water pressure regulator from the trusted N250BZ series, factory preset at 20 PSI. Designed for hydronic heating systems, boiler fill applications, and potable water service, this regulator automatically reduces incoming supply pressure to a safe, consistent downstream level — protecting system components and extending equipment life. The integral bypass feature allows for manual system filling or pressure testing without removing the valve from the line, saving time and reducing labor on installation and service calls.
Constructed with a lead-free bronze body, the LFN250BZ meets stringent NSF/ANSI 61 and NSF/ANSI 372 standards for use in potable water systems, making it compliant with lead-free legislation across the United States. The “LF” designation confirms this valve is safe for drinking water contact, while the durable bronze construction ensures long service life in demanding HVAC and plumbing environments.
Key Features
- 3/4″ connection size for standard residential and light commercial piping
- Factory preset at 20 PSI for consistent, reliable downstream pressure
- Integral bypass valve for easy system filling and pressure testing
- Lead-free bronze (BZ) body construction — NSF/ANSI 61 & 372 compliant
- Designed for hydronic heating, boiler feed, and potable water applications
- Reduces high incoming supply pressure to protect downstream components
- Watts N250 series — a proven, industry-trusted pressure reducing valve platform
Specifications
- SKU: 0121246
- Model: LFN250BZ
- Connection Size: 3/4″
- Preset Outlet Pressure: 20 PSI
- Body Material: Lead-Free Bronze
- Compliance: NSF/ANSI 61, NSF/ANSI 372 (Lead-Free)
- Bypass: Integral bypass included
- Brand: Watts
Application
Ideal for use as a boiler fill valve in hydronic heating systems, as a pressure reducing valve on domestic water supply lines, or anywhere a reliable, pre-set low-pressure regulation point is required. The bypass feature is especially valuable in boiler applications where the system must be filled or topped off without interrupting the valve’s normal operation.
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