Model # 374A

Internet #100532582

Store SKU #816403

null 3/4 in. Cast-Iron Water Pressure Safety Relief Valve
0098268678833

3/4 in. Cast-Iron Water Pressure Safety Relief Valve

$24.78 /each

Frequently Bought Together

Product Overview

The 3/4 in. Cast-Iron Water Pressure Safety relief valve is used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. It consists of an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and not as an operating control.

California residents: see   Proposition 65 information

  • Standard pressure setting 30 psi (206.9 kPa)
  • Pressure range in 5 psi (34.5 kPa) increments from 30 to 150 psi (2 to 10 bar) with corresponding high ratings at 550,000 BTU/Hr
  • Iron body for strength and long life
  • Easy to install

Info & Guides

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Specifications

Dimensions

Details

Warranty / Certifications

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Customer Questions & Answers

Can the valve get mounted horizontally?

Can the 374 mount sideways to point down with the discharge?
Asked by: PatT
Yes, see image...
Answered by: JollyRoger
Date published: 2017-02-18

May i use it heating sistems ? Boiler?

Asked by: Chitto
Yes, see image
Answered by: JollyRoger
Date published: 2017-02-18

What is the BTU rating of this relief valve?

Asked by: VAOR
550,000 BTU/HR. rating, I got this right off of the tag that comes on it.
Answered by: JollyRoger
Date published: 2017-02-18

will this valve replace Conbraco 10-408-05

Asked by: Oldman
Yes, the ¾” 374A will replace the Conbraco 10-408-05.
Answered by: WattsWater
Date published: 2016-12-12
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Customer Reviews

3/4 in. Cast-Iron Water Pressure Safety Relief Valve is rated 4.1 out of 5 by 15.
Rated 5 out of 5 by from Working on my furnace seemed daunting at first, but after viewing this product it seemed easy eno... Working on my furnace seemed daunting at first, but after viewing this product it seemed easy enough to change. This part WAS easy to remove and replace. It was also very easy to locate this product on the Home Depot website. I simply entered the part # I found on the old valve (1979 furnace) , and I found exactly what I needed !
Date published: 2017-02-15
Rated 4 out of 5 by from Does the job Only lasted 3 years, but for the price, its worth it. Thanks home depot for having it in stock.
Date published: 2017-01-03
Rated 5 out of 5 by from This relief valve is a good product at the cost. This relief valve is a good product at the cost.
Date published: 2017-01-06
Rated 4 out of 5 by from Should come with brass nipple... Should come with brass nipple
Date published: 2017-01-25
Rated 1 out of 5 by from Broke after three days Broke after three days
Date published: 2016-12-27
Rated 5 out of 5 by from Does the job Although a little pricey for just a pressure valve, it does do the job.
Date published: 2013-09-01
Rated 3 out of 5 by from Should last longer I have to replace these every year or two because they start leaking. They don't wear out but the disc type valve seat gets contaminated too easily. Needs a better design.
Date published: 2015-01-06
Rated 5 out of 5 by from heating system only (30 psi relief) Simple to install after heating system drained. Two pipe wrenches and some white Teflon tape were the only things needed to complete the installation.
Date published: 2015-01-20
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