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Atwood Mobile 90028 Water Heater Pressure-Temperature Relief Valve 3/4-14 NPT 150 PSI

Manufacturer

Atwood Mobile

<h3>Atwood Mobile Products: Over a Century of RV Innovation</h3><p><strong>Atwood Mobile Products</strong> has been bringing the comforts of home to the open road since its founding in 1909 by brothers James and Seth Atwood. What began as the Atwood Vacuum Machine Company in Rockford, Illinois gradually evolved into one of the most recognized names in the recreational vehicle industry. Through decades of strategic growth and product development, Atwood became the go-to manufacturer of essential RV appliances — earning a reputation built on durability, reliability, and engineering excellence.</p><p>The company's trajectory into the RV market accelerated through a series of key acquisitions. In 1964, Atwood purchased the Bowen Company, an established RV water heater manufacturer, planting the seeds for what would become its most iconic product line. The mid-1980s acquisition of Wedgewood brought a full lineup of gas ranges and cooktops into the fold, and the 1993 purchase of Hydroflame furnaces solidified gas appliances as the core of Atwood's identity. By 2010, the company had further expanded with the addition of Fan-Tastic Vent, a respected manufacturer of performance air-exchange systems. In 2014, Dometic acquired Atwood Mobile Products, and Atwood products continue to be manufactured and sold under the Dometic umbrella — carrying forward a legacy that touches virtually every corner of the RV market.</p><p>According to industry sources, Atwood products are found in approximately 90 percent of recreational vehicles in America — a testament to the brand's widespread trust among RV builders and owners alike. Whether you're outfitting a new rig or replacing a worn component, Atwood's lineup covers the essentials that make mobile living comfortable and safe.</p><h3>Atwood's Core Product Categories</h3><p>Atwood's strength lies in the breadth and quality of its appliance lineup. The brand's <a href="/6692-atwood-mobile-water-heaters-201162">RV water heaters</a> are perhaps its most celebrated products, available in propane, electric, and on-demand tankless configurations to suit a wide range of needs and rig sizes. Their aluminum tank construction is engineered to resist corrosion — a critical advantage in mobile environments where moisture and road wear take a constant toll.</p><p>For warm-weather travel, Atwood's <a href="/200073-air-conditioning-atwood-mobile-6692">RV air conditioning</a> units provide efficient, quiet rooftop cooling that keeps interiors comfortable even in peak summer heat. Designed specifically for the demands of mobile use, these units balance powerful output with energy-conscious operation.</p><p>In the galley, Atwood's <a href="/201021-stoves-cooktops-atwood-mobile-6692">RV stoves and cooktops</a> — developed through the Wedgewood line — offer a wide selection of gas cooking options that bring real home-cooking capability to any camper or motorhome. And for maintaining a fully functioning RV bathroom and kitchen, the brand's <a href="/6692-atwood-mobile-plumbing-parts-accessories-200786">plumbing parts and accessories</a> provide the connectors, fittings, and hardware needed to keep water systems running properly on the road.</p><p>Atwood Mobile Products remains a cornerstone brand for RV owners, DIY enthusiasts, and professional technicians seeking dependable replacement parts and appliances. With a service network spanning thousands of locations across North America, support for Atwood products is never far away.</p>

Part Number

90028
09/20/2036 9:31 PM
Sale Price

$83.09

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Atwood Mobile 90028 is an OEM pressure-temperature (P/T) relief valve engineered as a direct replacement for Atwood and Dometic RV water heaters. Featuring a 3/4-14 NPT thread connection and a factory-set relief pressure of 150 PSI, this valve is a critical safety component that protects your water heater tank and surrounding plumbing from dangerous over-pressurization.

When internal tank pressure exceeds the rated threshold, the valve automatically opens to safely vent excess pressure—then reseats once conditions normalize. Replacing a faulty or weeping P/T relief valve is essential preventive maintenance that helps avoid costly water heater damage.

Key Features:

  • Factory-set relief pressure: 150 PSI
  • Thread size: 3/4-14 NPT
  • OEM replacement for Atwood / Dometic RV water heaters
  • Automatic pressure-relieving operation for passive safety protection
  • Direct fit for electric and combination gas/electric Atwood water heater models

Compatible Atwood Water Heater Models Include:

  • GCH66E, GCH67E, GCH68E
  • G6A6E, G6A7E, G6A8E
  • G10-2E, G10-3E
  • GH102E, GH103E
  • GCH6A10E, GC6AA10E
  • GC10A4E, GCH10A4E
  • Most other Atwood models equipped with a 3/4 NPT relief valve

Sold as a single replacement valve. This is a genuine Atwood Mobile Products part (now sold under the Dometic brand) and the correct OEM service kit component for 3/4-inch NPT-equipped units.

Haven't found the time to work on my SL.

Tires arrived in great condition

Everything went smoothly. Thanks.

Excellent price and very easy to order products.

Product shipped from Norfolk VA, which was very convenient to me in NC. Arrived in a few days from ordering.

easy order

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great prices

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