Amtrol 399591 Well-x-trol 20 Gallon Well Pressure Tank

Product Description

The AMTROL 399591 is a pre-pressurized diaphragm-style well pressure tank designed to maintain system pressure, protect the pump from short-cycling, and deliver consistent water flow in residential and light commercial well water systems. Rated to 150 PSIG working pressure, the tank is built around a deep drawn steel shell with multi-dome construction and a heavy-duty butyl diaphragm that separates the air charge from the water supply. The antimicrobial liner neutralizes bacteria on contact, and the patented Turbulator water circulation device keeps water moving to prevent stagnation. The space-saver footprint makes it practical for installations where floor space is limited.

This tank is suited for residential well water systems where a compact vertical tank is needed in a utility room, crawlspace, or equipment area. The 20-gallon drawdown capacity supports standard single-phase submersible and jet pump configurations. The stainless steel system connection and welded air stem reduce corrosion and leak points at critical fittings. A patented DuraBase composite stand eliminates the corrosion common to steel base designs, making this tank appropriate for both indoor and outdoor installations.

Key Features

• 150 PSIG maximum working pressure with deep drawn steel and multi-dome shell construction
• Heavy-duty butyl diaphragm isolates air charge from potable water supply
• Antimicrobial liner neutralizes bacteria on contact for cleaner system operation
• Patented Turbulator water circulation device reduces stagnation inside the tank
• Stainless steel system connection and welded air stem minimize corrosion and leak risk
• Patented DuraBase composite stand resists corrosion for indoor and outdoor use
• Tuf-Kote HG exterior coating provides durable protection in demanding environments

Compatibility

Designed as an OEM-style pre-pressurized replacement or new-installation well pressure tank for residential and light commercial well water systems using standard submersible or jet pump configurations.

Installation Notes

Well pressure tanks are typically installed by licensed plumbers in accordance with local plumbing codes and IPC guidelines. Before servicing or replacing an existing tank, shut off the pump breaker, relieve system pressure at a nearby fixture, and verify the pre-charge air pressure matches the system cut-in pressure before connecting. Do not exceed the rated 150 PSIG working pressure. Thread connections should be sealed with approved thread sealant or tape rated for potable water service.

Technical Specifications

• Maximum Working Pressure: 150 PSIG
• Tank Capacity: 20 gallons
• Diaphragm Material: Heavy-duty butyl
• Shell Construction: Deep drawn steel, multi-dome
• Exterior Coating: Tuf-Kote HG
• System Connection Material: Stainless steel
• Base Material: DuraBase composite (non-corrosive)
• Warranty: 7-year limited

Standard Information

• Brand: AMTROL
• Manufacturer Part Number: 399591