Do you loosen the cap on top?

Yes, you must loosen the cap for the air to vent. If you don't it has no where to vent to. Loosen cap 1/2 to full turn. don't over loosen.

can this be mounted horizontally?

The air vent must be installed vertically.

Can this be used to purge air from a well water line (cold) after the pump and before it gets to the house?

Yes, but it should be installed at the highest point in the line.

Does Bignell know water is water hot or cold ?

No it is for steam it only works hot ..used to bleed the line of air so water flows evenly thru line

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Hydro Master Automatic Air Vent Valve 1/8 Inch Brass

Hydro Master Automatic Air Vent Valve 1/8 Inch Brass

Product ID: 129773998

Details

Brand
HYDRO MASTER
Exterior Finish
Brass
Inlet Connection Size
0.13 inches
Inlet Connection Type
National Pipe
Material
Brass
Maximum Operating Pressure
150 psi

🔩150 psi max pressure

♨️240°F max temperature

🛠️1/8" NPT universal fit

482 kr

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Description

♨️ Upgrade Your Heat Game: The Smart Valve Every Pro Swears By!

BUILT TO LAST - Heavy-duty brass construction ensures durability and eco-friendly reliability for years of maintenance-free operation.
EFFORTLESS AIR BLEEDING - Set it and forget it—automatic venting keeps your heating system running flawlessly without manual hassle.
UNIVERSAL COMPATIBILITY - 1/8" male NPT threading fits seamlessly with most residential hydronic systems and air scoops.
ENERGY EFFICIENCY BOOSTER - Eliminates trapped air to prevent cold spots and uneven heating, reducing energy bills and boosting comfort.
QUICK TOOL FREE INSTALLATION - Swap out your manual valve in seconds—no special tools needed, saving you time and effort.

The Hydro Master Automatic Air Vent Valve is a robust 1/8" brass valve designed for hydronic heating systems. It automatically vents trapped air up to 150 psi and 240°F, improving system efficiency and comfort. Easy to install with universal NPT threading, it eliminates manual bleeding, saving time and energy costs while ensuring consistent heat distribution.

Specifications

ASIN	B07PQFWWZC
Best Sellers Rank	#14,768 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #475 in Fittings
Brand Name	HYDRO MASTER
Customer Reviews	4.6 4.6 out of 5 stars (690)
Exterior Finish	Brass
Inlet Connection Size	0.13 inches
Inlet Connection Type	National Pipe Tapered
Manufacturer	Boro
Manufacturer Part Number	692232533465
Material Type	Brass
Maximum Pressure	150 psi
Model Number	692232533465
Number of Items	1
Number of Pieces	1
Number of Ports	1
Outlet Connection Size	0.13 inches
Outlet Connection Type	MNPT
Size	1/8”
Thread Size	1/8 inch
Thread Type	NPT
UPC	692232533465
Unit Count	1 Count
Valve Type	Air Control Valve

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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482 kr

Duties & taxes included

In stock

Sold byAmazon NorwayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Norway.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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Good experience, but the tracking updates could be better.

2 months ago

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