⚙️ Honeywell Home 40003916-026 V8043E Powerhead Assembly – 2-Way, 24V, 18″ Leads
🧭 Product Overview
The Honeywell Home 40003916-026 Powerhead Assembly is a direct replacement for V8043E zone valves in hydronic heating systems. Designed for two-way valves with a spring return to close, this powerhead provides smooth, reliable control of hot water flow. Featuring 18″ leads and a manual lever, it’s engineered for easy installation and dependable operation in residential and light commercial heating systems.
Built with Honeywell’s trusted quality, the 40003916-026 ensures quiet operation, long service life, and simple replacement — no need to remove the valve body from the piping.
✅ Key Features
✔️ Direct Replacement: Fits Honeywell V8043E 2-way zone valves with end switch.
✔️ Spring Return Close Action: Automatically returns to closed position for safety.
✔️ 18″ Leads: Pre-attached wiring for quick, clean installation.
✔️ Manual Lever: Allows manual operation for setup and testing.
✔️ Reliable 24V Operation: Compatible with standard 24V control systems.
✔️ Auxiliary Switch Included: Rated for 4.4A running @ 120V or 50 VA @ 24V pilot duty.
✔️ Hot Water Use Only: Specifically designed for hydronic heating zones.
✔️ No Plumbing Required: Replace the powerhead without disconnecting the valve body.
📏 Specifications
| Specification | Details |
|---|
| Brand |
Honeywell Home |
| Part Number |
40003916-026 |
| Model |
V8043E Powerhead Assembly |
| Application |
Two-way zone valve (spring return to close) |
| Voltage |
24V AC |
| Frequency |
50/60 Hz |
| Leads |
18″ (on same side as manual lever) |
| Ambient Temperature Range |
Max 125°F |
| Auxiliary Switch Ratings |
4.4 A running @ 120V; 50 VA @ 24V pilot duty |
| Media |
Hot Water Only |
| Mounting |
Snap-on replacement for V8043E valves |
| Manual Opener |
Yes |
| End Switch |
Yes |
⚠️ Common Symptoms Indicating Replacement Needed
-
Zone valve not opening or closing properly
-
System not responding to thermostat calls
-
Manual lever feels loose or stuck
-
Heating zones remain hot when thermostat is off
-
No voltage or response from powerhead during operation
💬 (FAQ) Frequently Asked Questions
Q: Is this a direct replacement for older V8043E zone valves?
A: Yes — the 40003916-026 is a drop-in powerhead replacement for Honeywell V8043E series valves with end switches.
Q: Can I replace this without draining the system?
A: Yes — the powerhead can be removed and replaced without disconnecting plumbing or draining water lines.
Q: Is it suitable for steam systems?
A: No — this model is for hot water systems only.
Q: Does it include the valve body?
A: No, this listing is for the powerhead assembly only.
🛒 Shopping Tips
-
Double-check your existing valve model (should be V8043E).
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Ensure your system uses 24V control voltage.
-
Replace powerheads in pairs for multi-zone systems to maintain consistency.
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Keep wiring diagrams handy during installation for correct lead connections.
