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Whale Water Systems 75974 Temperature and Pressure Relief Valve for Marine Water Heaters

Manufacturer

Whale Water Systems

<h3>About Whale Water Systems</h3><p>With roots stretching back to <strong>1810</strong> and headquarters in Bangor, Northern Ireland, Whale Water Systems has spent over two centuries refining the art of water management for life on the move. Whether you're outfitting a sailboat, a motorhome, or a caravan, Whale has built an enduring reputation as one of the world's most trusted suppliers of low-voltage water, waste, and heating systems. Today, as part of the broader Brunswick Corporation family through the Navico Group, Whale continues to bring engineering heritage and modern innovation together in every product it makes.</p><h3>Purpose-Built for Marine, RV &amp; Caravan Life</h3><p>What sets Whale apart is its singular focus: delivering reliable water and heating solutions designed specifically for the demands of off-grid and mobile living. Unlike general plumbing brands, Whale engineers its products around low-voltage DC power systems, making them ideally suited to boats, campervans, and recreational vehicles where conserving power is just as important as conserving water. From compact <a href="/7648-whale-water-systems-water-heaters-201162">water heaters</a> that deliver hot water efficiently without shore power dependency, to precision-engineered <a href="/7648-whale-water-systems-pressurized-water-system-tubing-fittings-200807">pressurized water system tubing and fittings</a> designed to handle the vibration and movement of life underway, every Whale product is built with the mobile user in mind.</p><h3>A Complete Water System Ecosystem</h3><p>One of the greatest strengths of choosing Whale is the ability to build a fully integrated water system using components from a single, trusted manufacturer. Whale's <a href="/7648-whale-water-systems-float-switches-200426">float switches</a> keep bilge and tank monitoring reliable and automatic, providing peace of mind whether you're at anchor or on the road. Their <a href="/7648-whale-water-systems-showerfaucet-mixers-200946">shower and faucet mixers</a> are thoughtfully designed to balance hot and cold water delivery in tight spaces — a hallmark of marine and RV bathroom design. And for everything that holds a system together, Whale's extensive line of <a href="/7648-whale-water-systems-plumbing-parts-accessories-200786">plumbing parts and accessories</a> ensures you can maintain, repair, or expand your water system with confidence.</p><h3>Over 200 Years of Engineering Expertise</h3><p>Whale's longevity in the industry is no accident. The brand has continuously invested in research and development to meet evolving standards for safety, efficiency, and ease of installation. Their products are widely recognized for tool-free push-fit connections, durable materials that resist corrosion in salt and freshwater environments, and designs that make DIY installation accessible to boat owners and RV enthusiasts alike. When you're miles from the nearest marina or campground service center, the reliability of your water system matters enormously — and that's exactly the scenario Whale has been engineering for since the nineteenth century.</p><p>Whether you're upgrading an aging water heater, replacing worn fittings, or building out a new pressurized water system from scratch, Whale Water Systems offers the depth of product range and the proven track record to get the job done right.</p>

Part Number

75974
09/12/2036 7:16 AM
Sale Price

$38.01

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Whale Water Systems 75974 is a critical safety component designed to protect marine hot water heating systems from excessive pressure and temperature buildup. This replacement relief valve is specifically engineered for Seaward 6-gallon and 11-gallon marine water heaters, providing reliable protection against dangerous conditions that can damage equipment or create safety hazards.

Key Features:

  • 1/2" NPT threaded connection for secure installation
  • 100 PSI maximum pressure rating for optimal safety protection
  • 210°F temperature relief threshold prevents overheating
  • Direct replacement for Seaward part number 73127
  • Manufactured by Watts (OEM part number 0004431)
  • Compatible with all Seaward marine water heaters

This temperature and pressure relief valve automatically releases water when system pressure exceeds 100 PSI or temperature reaches 210°F, preventing tank rupture and protecting your marine plumbing system. Essential for maintaining safe operation of your onboard hot water system, this valve ensures compliance with marine safety standards while extending the life of your water heater.

Quick and easy search system.

great selection, fast delivery

Recieved item as described and in great condition 7

All is good! If you ship with USPS (and not UPS) I&#039;m happy.

Y'all guys are awesome I will be definitely order from you again . I have a 1978 omc 350 in and out board that I have been trying to find a place to order from.Now I am so glad that I found y'all.Mr Gilmore

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