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Main product image of 1-1/4" x 1-1/2" Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (45 psi)
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1-1/4" x 1-1/2" Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (45 psi)

Brand:
Watts
SKU:
F383308
Rating:
(1)
Q&A:
(0)
1-1/4" x 1-1/2" Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (45 psi)
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$656.87 each
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Non-Potable Water Applications

This product does not comply with the “Safe Drinking Water Act,” which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.
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Product Highlights

Product Highlight: Size
1-1/4" x 1-1/2"
Product Highlight: Pressure Set Point
45 psi
Product Highlight: Capacity (BTU)
28300 BTU Capacity
Product Highlight: Inlet Size
1-1/4"
Product Highlight: Outlet Size
1-1/2"
Product Highlight: Material
Iron

Description

This pressure relief valve has a 1 inch NPTF female inlet, 1-1/4 inch NPTF female outlet, and pressure relief setpoint of 45 psi. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features an iron body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Sensor activation requires purchase of an activation kit which can be connected to existing building management systems or the Watts Cellular Gateway.

Product Features
  • Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve
  • Requires purchase of activation kit to activate sensor
  • Iron body with forged bronze inlet
  • Expanded outlets for hot water space heating boilers
  • Non-metallic disc-to-metal seating
  • Set pressure 45 psi
Specifications
  • Body Material: Iron
  • Inlet Connection Size: 1-1/4 IN
  • Inlet Connection Type: Female Threaded
  • Inlet Thread Type: NPTF
  • Lead Free: Not In Scope
  • Maximum Working Pressure-PSI: 35
  • Outlet Connection Size: 1-1/2 IN
  • Outlet Connection Type: Female Threaded
  • Outlet Thread Type: NPTF
  • Pressure Range: Does Not Apply to Product
  • Pressure Relief Setting-PSI: 45
  • Series: 740

Specs

Pressure Set Point:

45 psi

Capacity (BTU):

28300

Capacity:

2830000 BTU/hr

Inlet Size:

1-1/4"

Outlet Size:

1-1/2"

Size:

1-1/4" x 1-1/2"

Material:

Iron

Application:

Heating

Thread Type:

Female

Temperature Range (F):

250°F Max

Connection Type:

Threaded

ASME:

Yes

Contact

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Use this for Tankless Boiler Application

My Laars Mascot boiler came with a 30PSI relief valve, which I changed with this 45PSI recently. It was apparent that on cold days when the boiler had to put out more heat, the pressure built up in the system to just around 30PSI. This caused the relief valve to continually discharge water from the system, to the tune of a 5-Gal bucket every few hours. Since the pressure was no where near being out of the range of normal operation, it became apparent that the 30PSI was completely inadequate for this system. Price is high due to uncommon pressure setting.
Eastoner
Easton PA
14 years ago
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