Resideo 272742A Repair Kit

The Resideo 272742A is a field-proven zone valve repair kit designed to restore the internal sealing integrity of your Honeywell V8043, V8044, V4043, and V4044 series motorized hydronic valves. When troubleshooting a leaking zone valve or a high-limit trip caused by bypass seepage, swapping out the internal components is often more efficient than sweating out the entire valve body. This kit, which is technically identical to the 272742A/U version, provides the essential OEM replacement parts required to fix a stuck zone valve rubber ball or a degraded EPDM O-ring seal. By refreshing the moving parts and the primary seal, you eliminate the mechanical resistance that frequently causes synchronous motor failure or overheating in hydronic heating systems.

For service contractors, the Resideo 272742A Repair Kit offers a high-performance solution for residential and light commercial hot water zoning applications. The inclusion of a low-friction Teflon sleeve ensures smooth rotation of the ball assembly, preventing the "sticking" issues common in high-mineral or glycol-treated loops. This valve rebuild kit is rated for systems up to 300 psi and is the standard choice for 2-way and 3-way zone valve maintenance where the physical valve body remains structurally sound but the internal seat has failed.

• Complete Internal Overhaul: Includes (1) rubber ball, (1) 1-inch O-ring, (1) Teflon sleeve, and (4) replacement screws for a full hardware refresh.
• Universal Compatibility: Fits all standard Resideo and Honeywell V-series motorized valves, ensuring you have the right part for diverse service calls.
• Leak Prevention: High-grade 1" O-ring and precision-molded rubber ball restore the bubble-tight shut-off required for efficient zone control.
• Reduced Friction: Integrated Teflon sleeve minimizes torque requirements on the power head, extending the service life of the actuator motor.

Is the 272742A compatible with older 2-wire and 4-wire V8043 models?
Yes, this kit is specifically engineered for the internal assembly of the V8043 and V4043 series, regardless of the lead-wire configuration on the actuator head.

Do I need to drain the entire boiler system to install this kit?
You only need to isolate the specific zone and depressurize it. Because this kit replaces the internal ball and seals, the valve body must be opened, necessitating a partial drain of the isolated circuit.

What is the difference between the 272742A and the 272742A/U?
There is no technical difference between the two part numbers; the "U" designation typically denotes universal retail packaging, but the internal components are identical OEM specs.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.