WSP Pressure Tank - Well Water, PT-AMTRO-5, Amtrol

If your well water system cycles on and off too often or the water pressure fluctuates when you run multiple fixtures, the WSP Pressure Tank smooths out those ups and downs. It holds a large reserve of pressurized water to ease pump strain and keep your flow steady.

The problem you’re facing

When you turn on a faucet, flush a toilet, or start an irrigation system using well water, you expect steady pressure and a smooth flow. But if your pump cycles on and off too frequently, you’ll notice pressure surges, inconsistent water delivery, or even a short pump lifespan. You might hear the pump kick in every few minutes, or experience the water pressure dipping when several taps run at once.

Why it’s happening

Well pumps rely on pressure tanks to store water under air pressure. Without a properly sized tank, your pump has to start and stop more often—this is called short-cycling. It happens because the system doesn’t hold enough water at the right pressure to meet your household’s demand between pump runs. The pressure tank’s bladder or diaphragm keeps water and air separated, maintaining consistent pressure. If the tank is too small or compromised, the pump cycles frequently, causing pressure swings.

What it’s costing you to leave it

Frequent pump cycling puts mechanical strain on your pump motor, reducing its lifespan and increasing the chance of failure. It can also lead to uneven water pressure during showers or when multiple appliances run at once. Over time, that pressure fluctuation can wear on plumbing fixtures and appliances. You may find yourself spending more time listening to the pump or dealing with low water flow when you need it most.

How this system fixes it

The WSP Pressure Tank provides a large reserve of pressurized water that your system can draw from before the pump needs to start again. It uses a pre-charged diaphragm inside the tank to keep the water separate from the air cushion. This air pressure pushes the water out steadily, so you get smooth, even pressure. By holding a bigger water buffer, the pump can rest longer and start less often, protecting it from wear.

What this system can handle

This tank offers a commanding 119-gallon capacity, making it suitable for homes with high water demand, large estates, or light-commercial setups. It can support irrigation systems, agricultural watering, and multi-fixture buildings with heavy simultaneous water use. Its large volume means it handles even the toughest pressure requirements, reducing short-cycling and maintaining steady pressure in systems where smaller tanks fall short.

What you actually get

The WSP Pressure Tank includes the durable pressure vessel with a factory pre-charged diaphragm designed to keep water and air separated throughout its life. This tank carries a lifetime warranty on the pressure vessel itself. The control valve and electronics come with the manufacturer’s standard warranty. The exact valve and control configuration will be matched to your system when sized.

Is this the right size for you

This tank fits homes or facilities with very high water demand or those experiencing rapid pump cycling with smaller tanks. It’s ideal if you have multiple bathrooms, irrigation, or a light-commercial operation. If your water use is moderate or your well pump is smaller, a smaller pressure tank may suit you better. Oversizing can mean unnecessary upfront cost and space use.

Living with it

The tank itself requires little maintenance thanks to the pre-charged diaphragm design. You should periodically check the air charge pressure matches your pump’s cut-in pressure and adjust if needed—something your plumber can handle during routine service. The large capacity means fewer pump starts, which saves wear on your pump and reduces maintenance overall.

What it won’t do

This pressure tank won’t filter or soften your water, nor will it fix taste, odor, or chemical problems. It’s designed solely to smooth pump cycling and stabilize pressure. For sediment, hardness, or contaminant issues, you’ll need dedicated filtration or treatment equipment.

Why buy it from us

Water Softener Plus (WSP) ships this tank directly from Tampa, Florida, with free U.S. shipping included. You get a genuine Amtrol-built pressure vessel renowned for durability and serviceability. We offer a lifetime warranty on the tank’s pressure vessel and stand behind the product with a 90-day money-back guarantee. Our team helps you size it correctly for your system before purchase—no pushy sales, just straightforward advice.

Included with this system

• Lifetime warranty on the tank. The control valve and electronics carry the manufacturer's own warranty.

Specifications

The next step

Order your WSP Pressure Tank online today to ensure your well pump runs smoothly and your water pressure stays steady. Free U.S. shipping is included—let us help protect your pump and improve your water system’s performance.