Extrol SX-90V - Water heaters and boilers Amtrol - Free user manual and instructions
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| Product Type | Expansion Tank for Water Heaters and Boilers |
| Model | Extrol SX-90V |
| Brand | Amtrol |
| Capacity | 4.9 Gallons |
| Precharge Pressure | 40 psi (Adjustable) |
| Maximum Working Pressure | 150 psi |
| Maximum Operating Temperature | 240°F |
| Connection Size | 1 inch NPT Female |
| Material - Shell | Steel with Epoxy Coating |
| Material - Diaphragm | Butyl Rubber |
| Dimensions (Diameter x Height) | 14.5 inches x 14.5 inches |
| Weight | 11.5 lbs |
| Application | Residential and Light Commercial Water Systems |
| Functions | Absorb expansion pressure, reduce water hammer, maintain consistent water pressure |
| Installation Orientation | Vertical or Horizontal (with bracket) |
| Maintenance | Check precharge annually; drain if necessary |
| Safety Features | ASME certified, Pressure relief valve compatible |
| Spare Parts Availability | Replacement air valve and diaphragm kits available |
| Warranty | 5 years limited warranty |
Frequently Asked Questions - Extrol SX-90V Amtrol
What is the purpose of the Amtrol Extrol SX-90V expansion tank?
The Extrol SX-90V is designed to absorb the increased volume of water caused by thermal expansion in closed water systems, preventing pressure buildup and reducing strain on plumbing and fixtures.
How do I set the precharge pressure on the SX-90V?
Use a standard tire gauge to check the air pressure at the valve on top of the tank. Adjust the pressure to match the system's static water pressure, typically 40-60 psi. Use a bicycle pump or compressor to add air, or depress the valve to release air.
Can the SX-90V be installed horizontally?
Yes, the tank can be installed either vertically or horizontally. When mounting horizontally, use the provided bracket to ensure proper support and avoid stress on the connection.
How often should I check the expansion tank?
It is recommended to inspect the tank annually. Check the precharge pressure and look for any signs of leaks or corrosion. If the water system pressure fluctuates frequently, check more often.
What should I do if the tank is waterlogged?
If the tank feels heavy and no cushion when tapped, it may be waterlogged. Turn off the water supply, drain the system side, and re-pressurize the air side to the recommended precharge. If the diaphragm is ruptured, replace the tank.
Is the Extrol SX-90V compatible with all water heaters?
It is suitable for most residential and light commercial water heaters and boilers. Ensure the tank capacity and pressure rating match your system. Always consult local codes.
What maintenance does the SX-90V require?
Minimal maintenance is needed. Check the air precharge annually and inspect for leaks. Keep the area around the tank clean and free from debris. No lubrication or internal cleaning is required.
What is the maximum temperature and pressure the tank can handle?
The tank is rated for a maximum working pressure of 150 psi and a maximum operating temperature of 240°F. Exceeding these limits may cause damage or failure.
How do I replace a faulty valve on the SX-90V?
The air valve is replaceable. First, depressurize the tank by releasing air. Unscrew the old valve using a valve core tool, then screw in a new one. Re-pressurize to the correct setting. For diaphragm replacement, contact a professional.
Where can I find replacement parts for the Extrol SX-90V?
Replacement parts, including air valve cores and diaphragm repair kits, can be purchased through Amtrol authorized dealers or online plumbing supply stores. Ensure you have the model number for correct ordering.
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USER MANUAL Extrol SX-90V Amtrol
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Product information
Brand : Amtrol
Model : Extrol SX-90V
Category : Water heaters and boilers