Automatic Vent Valve,1/4 in. NPT close
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Automatic Vent Valve, 1/4 in. NPT

WATTS

Price: $12.41 / each

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5.0 Stars
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  • Item # 4A821
  • Mfr. Model # FV-4-1/4
  • NSN # 5340-01-495-1787
  • UNSPSC # 40141727
  • Catalog Page # 3767
  • Shipping Weight 0.3 lbs.
Country of Origin USACountry of Origin is subject to change.

Technical Specs

  • ItemAutomatic Vent Valve
  • Inlet Size1/4"
  • Body MaterialBrass
  • Connection TypeMNPT
  • Float MaterialPolyethylene
  • Max. Pressure150 psi
  • Min. Pressure1.45 psi
  • Temp. Range33 Degrees to 240 Degrees F
  • Vent Dia.1-1/4"
  • Vent Height3-1/8"

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Rated 5 out of 5 by 1reviewer.
Rated 5 out of 5 by Works great. I have a small air leak before my pool pump that allows my filter to fill with air over time. Now, the system just evacuates the air on its own and I no longer have to go manually discharge the air with the valve at the top of the filter.It took 5 minutes and a few dollars worth of brass connectors to install. August 19, 2013
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Product Q&A

(1 Question : 1 Answer)

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I need to bleed my #2 oil generator every start up will this work with diesel fuel or do you have some other devise that is self bleeding that will,,thanks john
4 months ago
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Answer: 
This item has no FM approval and would not be a good choice for deisel fule contact, unfortunately Grainger does not have an air vent which is approved for flammables at this time.
3 months, 4 weeks ago
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The answers given by Grainger in Ask and Answer are not intended to replace or supplement any professional, engineering or other consultation services available to its product users. Always read, understand, and follow the product information and instructions provided by the manufacturer. same on category AAA as well