Armstrong 573100-008 A400-L Expansion Tank
Armstrong 573100-008 A400-L Expansion Tank
Couldn't load pickup availability
TIPS Contract Vendor
We are an officially awarded purchasing cooperative vendor.
📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 573100-008 |
| Model Designation | A400-L |
Efficient hydronic system management requires reliable pressure regulation, which is exactly what the 573100-008 Armstrong A400-L Expansion Tank is engineered to provide. This component acts as a critical safety and operational buffer in closed-loop heating and cooling circuits, ensuring that fluctuating water volumes caused by thermal expansion are managed effectively to protect sensitive system components from damage.
By utilizing an internal diaphragm, the model A400-L absorbs excess pressure as the fluid temperature rises, preventing the relief valve from unnecessary discharging. This mechanism maintains steady operating pressures, which significantly extends the service life of pumps, boilers, and piping infrastructure while preventing common issues like aeration or system water loss.
Key System Performance Baselines:
- Pressure Regulation: Maintains consistent system pressure to prevent premature relief valve activation.
- Corrosion Resistance: Heavy-duty shell construction provides long-term durability in demanding hydronic environments.
- Diaphragm Integrity: High-grade internal membrane isolates the system water from the air cushion for reliable performance.
⚠️ Application Profile: Recommended for use in residential and light commercial closed-loop hydronic heating systems, radiant floor heating installations, and chilled water loops requiring consistent expansion management.
