resideo 1-inch welded NC zone valve V8043F1051/U 24V

**Technical Specifications:**

*   **Model:** V8043F1051/U

*   **Valve Type:** 1-Inch NPT Welded Connection, Normally Closed (NC)

*   **Actuator Type:** Synchronous Motor, 24VAC

*   **Voltage:** 24VAC, 50/60Hz

*   **Power Consumption:** 4.8VA (at 24VAC)

*   **Close-off Pressure:** 45 psi (3.1 bar)

*   **Maximum Operating Pressure:** 150 psi (10.3 bar)

*   **Fluid Temperature Range:** 40°F to 250°F (4°C to 121°C)

*   **Ambient Temperature Range:** 40°F to 150°F (4°C to 66°C)

*   **Body Material:** Forged Brass

*   **Seat & Seal Material:** EPDM

*   **Stem Material:** Stainless Steel

*   **Connection:** 1" Male NPT (Welded)

*   **Flow Coefficient (Cv):** 8.0

*   **Motor Duty:** Intermittent (5 minutes on, 5 minutes off)

*   **End Switch Rating:** 5.0A (SPDT) at 120VAC, 2.5A at 240VAC, resistive

*   **Approvals:** CSA Certified

**Product Description:**

The Resideo V8043F1051/U is a 1-inch, normally closed zone valve designed for hydronic heating and cooling systems. It features robust welded NPT connections for a permanent, leak-resistant installation. The valve is operated by a reliable 24VAC synchronous motor actuator, which provides positive shut-off control for individual zones.

The brass forged body ensures durability and corrosion resistance under continuous operation within specified pressure and temperature ranges. The internal EPDR seat and seal, combined with a stainless steel stem, offer long service life and reliable sealing performance. An integrated auxiliary end switch is provided for system control signaling, such as activating a circulator pump or boiler.

This valve is engineered for demanding residential and light commercial applications where dependable zone control is required. Its intermittent duty motor is designed for typical cycling operation in zoning systems.