Watts 0121448 Valve

0121448 is the updated version for 0254480 (LEAD FREE), 140S-3-3/4-125, LF140S3-125-3/4

Watts 0121448 Pressure Safety Relief Valve – 140S-3 | 3/4" NPTF, 125 PSI, 218,000 BTU, Thermostat Length 3", ANSI Certified

Ensure safe and reliable operation of your water heating systems with the Watts 0121448 Pressure Safety Relief Valve, model 140S-3. Designed to provide dependable overpressure protection, this 3/4-inch valve is factory set at 125 PSI and rated for 218,000 BTU/hr, making it ideal for water heaters and hot water supply tanks.

Crafted with a copper silicon alloy body, this relief valve offers long-lasting durability and is built to perform in high-demand residential or commercial environments. It is certified to meet ANSI Z21.22 / CSA 4.4, ASME Code HV, and NSF/ANSI/CAN 372 standards.

Product Specifications:

• Brand: Watts

• MFR #: 0121448

• Model: 140S-3

• UPC: 098268585247

• Country of Origin: United States

• Category: Pressure Relief Valves / Cooling Equipment Relays

Technical Details:

• Inlet/Outlet Size: 3/4" NPTF, Female

• Thermostat Length: 3 inches

• Body Height: 5-5/8 inches

• Factory Set Pressure: 125 PSI

• Operating Pressure Range: 75–150 PSI

• Operating Temperature Range: -40°F to 210°F

• BTU Rating: 218,000 BtuH

• Body Material: Copper Silicon Alloy

• For Media: Water

• For Use With: LF140S-3

• Fits Brand: Watts

Key Features:

• Certified for safe drinking water use (low-lead compliance)

• Prevents dangerous pressure buildup in water heating systems

• Durable construction for long service life in harsh environments

• Factory-calibrated for precise performance

• Easy NPTF threaded installation

Certified Safety You Can Trust

This product meets all compliance requirements under the Safe Drinking Water Act, making it suitable for both potable and non-potable water systems. Whether you're installing new equipment or replacing an aging valve, the Watts 0121448 provides the peace of mind and reliability professionals expect.

Shop now for fast shipping and expert service. Protect your system with trusted Watts quality!

This item is not eligible for free shipping.