3420 H.B. SMITH Cover Plate
The H.B. Smith 3420 Cover Plate is a genuine OEM replacement part designed for use on 19A/HE and 28A/RTS Series Boilers. It serves as the observation cover plate, providing a secure and durable seal for inspection openings while maintaining system safety and efficiency.
🌟 Key Features
✅ OEM Replacement – Engineered to fit H.B. Smith 19A/HE and 28A/RTS Series boilers
✅ Durable Construction – Built to withstand high-temperature boiler environments
✅ Provides Secure Seal – Helps maintain safe operation during inspection and maintenance
✅ Easy Installation – Direct fit for quick replacement
⚙️ Technical Specifications
| Specification | Details |
|---|
| Brand |
H.B. Smith |
| Part Number |
3420 |
| Description |
Observation Cover Plate |
| Compatible Series |
19A/HE, 28A/RTS |
| Application |
Observation Port / Inspection Cover |
❓ Frequently Asked Questions (FAQ)
Q1: What boilers does this cover plate fit?
➡️ Compatible with H.B. Smith 19A/HE and 28A/RTS Series Boilers.
Q2: Is this plate supplied with the gasket?
➡️ Gasket sold separately; order the correct gasket for your boiler model if needed.
Q3: What is the purpose of the cover plate?
➡️ It covers the observation port, allowing safe inspection and maintenance access.
🛒 Shopping Tips
💡 Check your boiler’s model number before ordering to ensure compatibility.
🔧 Replace the gasket at the same time for best sealing performance.
🔥 Keep spare observation cover hardware for routine maintenance cycles.
