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1/8" FV4 Auto Air Vent

Brand:
Watts
SKU:
0590715
Rating:
(45)
Q&A:
(3)
1/8" FV4 Auto Air Vent
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$14.35 each
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In Stock
Get 386 Wed, Jul 30
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Product Highlights

Product Highlight: Size
1/8"
Product Highlight: System Type
Hydronic (Water)
Product Highlight: Max Temp (F)
240°F Max Temp
Product Highlight: Max Pressure
150 psi
Product Highlight: Min Temp (F)
33°F Min Temp
Product Highlight: Temperature Range (F)
33°F - 240°F

Description

Series FV-4 Automatic Vent Valves are used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a brass body construction with male NPT connection, brass cover, air vent with silicone rubber seal, polyethylene float with valve plug, and automatic vent. Series FV-4M1 has a high temperature rating and is ideal for use with glycol systems or for use as an anti-vacuum device. It can also be installed to permit the separation and dispersal of air while fluid is circulating in the system. Can be disassembled for inspection and cleaning. Maximum Pressure: 150psi (10 bar) Temperature Range: 33°F - 240°F

Features:
  • Body and cover are brass construction
  • Air vent with silicone rubber seal
  • Impurities do not usually affect function as maximum float line of water is always lower than the valve seal
  • Float is high temperature resistant polyethylene
  • Suitable for use with glycol systems
  • Can be disassembled for inspection and cleaning

Specs

Size:

1/8"

System Type:

Hydronic (Water)

Min Temp (F):

33°F

Max Temp (F):

240°F

Temperature Range (F):

33°F - 240°F

Max Pressure:

150 psi

Min Pressure (PSI):

1.45

Material:

Brass

Body Pattern:

Straight

Mount:

Straight

Adjustability:

Non-Adjustable

Thread Type:

Male

Thread Size:

1/8"

Contact

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Compare Similar Products

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System Type
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Material
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CURRENT ITEM
Product Image of 1/8" FV4 Auto Air Vent
1/8" FV4 Auto Air Vent
SKU: 0590715
(45)
1/8"
Hydronic (Water)
240°F
Brass
Straight
1/8"
Hydronic (Water)
250°F
Brass
Straight

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Product Reviews

4.91 out of 45 reviews
100% would recommend this product
4.91
out of 45 Reviews
100% would recommend this product
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5 star
91%
4 star
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3 star
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Showing 1-10 of 45 reviews

SupplyHouse.com, great parts fast

SupplyHouse always has the part I need at a great price with fast delivery. What more can you ask for!
Steve
Sanborn, New York
5 months ago
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Better quality then what it replaced

Worked as described
Joe S
New York
8 months ago
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I do recommend this

this is a well made product and vents out air like it should in my Solar thermal closed loop Glycol system
Willy
21078
2 years ago
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As described

Easy to change item on system, came quickly
Bob
Pa
3 years ago
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I would by it again.

I like the low profile. And the side port.
David
Illinois
3 years ago
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Great Air Vent Valves

I bought 4 of these auto air vent valves. My old valves on my boiler would no longer vent air from heating system. After replacing with these, i began to hear the " hiss" again. Which means air is coming out of heating system. That means nice warmer heat again. So , i highly recommend these Auto Air Vents For your heating system.
ZenriddleRob
Bronx, NY
4 years ago
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Items work well

Product seems to be working well.
Rick
Duluth, Mn
5 years ago
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Reasonable price work well

Used to vent air from two hydronic loops that are physically higher in elevation within the hydronic system. They worked great to remove remaining trapped air!
Tom
Woodland Park Colorado
5 years ago
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I would recommend your company to friends and family

The product was exactly what I needed. The service and ease of online order was exceptional. I've never been disappointed with any product or service.
Roy
Ririe Idaho
5 years ago
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Vents The Air!

My mother loved this as her Christmas present
Cookie Monster
Kalamazoo, MI
6 years ago
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Product Q&A

3 Questions
3 Questions
ASK A QUESTION

Q: Do you need to adjust the black thumb screw on top? It's doesn't seem to screw in or out? The one on my furnace seems to drip water out of it. Does that mean it's bad or needs cleaning?

Asked by Bill 10 years ago

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I'm not a plumber, but I have used these before. My understanding is that the screw cap is opened just a bit so air can escape. If it's leaking water probably means it's rusty and corroded inside. it's a pretty simple matter to remove it and clean it, but you have to isolate it by shutting off valves up and downstream from the vent, if you have them. hope this helps. Mark

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Q: the piece of plastic inside the threaded end.... do I have to remove it prior to installation?,,, I was under the impresion that the pastic insert is for shipping purposes only, to avoid damaging the float.

Asked by willy 11 years ago

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That stays - it's connected to the vacuum breaker. http://media.wattswater.com/ES-FV-4M1.pdf

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-

My understanding of the paddle is that it should be left in place with the installation and that its purpose is to be disturbed by the fluid flow to keep the vent From developing an "air-lock" that interferes with the flow of bubbles out of the system. I installed all of mine in hydronic heating system with the paddles in place and these work fine.

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Q: What are its dimensions?

Asked by 14 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

Pleas refer to page 2 of the specifications linked below: http://s3.pexsupply.com/manuals/1322845860917/69070_PROD_FILE.pdf

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