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Watts F274836 3/4" Pressure Relief Valve 174A 150PSI 2,445,000

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Special Price $270.77 Regular Price $300.55
In stock
SKU
F274836
The Watts F274836 3/4" Pressure Rel‍ief Val‍ve 174A 2,4​45,000 BTU is a essential pa⁠rt used i⁠n boiler and hot water heating​ systems to‍ prote‌ct eq⁠uipment f‍rom exces‌sive‌ inte‍rnal press‌ure in HVAC systems. It works by using a​ spring​-lo​aded mechani‌sm that automatic‌ally op‌e‌ns when system pressure exceeds⁠ the set limit of‍ 150 PSI, rel​e‌asin⁠g water to‍ pre‌vent damage and re​stor​e safe operating conditions. It is used‌ i​n systems where pressure control is critical. It helps improve system safety, pr⁠event equi​pment failure⁠, reduce overheating risks and ensure stable​, and protect‍ed performa‌nce in heating applications.
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Product Questions (2)
Customer Questions
What maintenance is required for the Watts F274836 Pressure Relief Valve?

Periodically test the valve using the manual lever to ensure proper operation and reseating. Inspect for leaks, corrosion, or discharge buildup. Keeping the discharge line clear helps maintain safety. Always use caution and relieve system pressure before inspection to avoid injury.

What are common issues with the Watts F274836 Pressure Relief Valve?

  • Continuous leaking or dripping from discharge pipe.
  • Valve failing to reseat properly after activation.
  • Pressure relief not triggering at set pressure.
  • Mineral buildup affecting valve sealing.
  • Corrosion or internal component wear.

Installation Steps

Step 1: Shut off water supply and relieve system pressure before installation.

Step 2: Remove the old pressure relief valve carefully.

Step 3: Apply thread sealant or Teflon tape to the valve threads.

Step 4: Install the new valve securely, ensuring proper orientation and tight connections.

Step 5: Connect the discharge pipe according to local plumbing codes.

Step 6: Turn on water supply, check for leaks, and test the valve operation safely.