#D, 1/4" Straight Air Valve Zoom

#D, 1/4" Straight Air Valve


Brand: Jacobus - Maid O Mist

Jacobus - Maid O Mist
Qty Price
/ each
$88.20 / box (12 units x $7.35)
In Stock at Supplier! Ships in 2-3 Days
(522 Available)


Application: Radiator Vent
Model: D
Size: 1/4"
System Type: Steam
Adjustability: Non-Adjustable
Temperature Range (F): 140°-240°F
Max Temp (F): 240°F
Min Temp (F): 140°F
Vent Size: .1850"
Mount: Straight
Material: Steel
Body Pattern: Straight
Thread Type: Male
Thread Size: 1/4"

Description for Jacobus - Maid O Mist JDS4

#D, 1/4" Straight Air Valve
Size: 1/4"
Type: Straight
Adjustability: Non-Adjustable

#D, 1/4" Straight Air Valve


by PowerReviews
Jacobus - Maid O Mist#D, 1/4" Straight Air Valve

(based on 1 review)

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Reviewed by 1 customer

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Right valve for the right location

By DIYGrace

from Brooklyn, NY

Verified Buyer

Comments about #D, 1/8" Straight Air Valve:

These Jacobus Maid of Mist valves are the best! We have an old steam system and some of the valves were noisy, leaking, or preventing the radiator from working at all. Some rooms were much cooler than others. After changing the valves to these, our system is working great. I was having a hard time finding the straight air valves at my local stores; Pex Supply had the complete selection.

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1 Question | 1 Answer
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  • #D, 1/4" Straight Air Valve


    Does the model type ( example 1/4 0r 1/8 ) affect how much heat , or how hot a radiator will get. I rent an apartment and the landlord freezes us in the winter and recently installed new valves on the radiators but before he sent the Supt. to do it he asked me what floor I live on. When I unscrewed the valve the radiator got extremely hot so I'm assuming the more air that escaped the hotter it will get? Thanks for your help:) Dyana
    Asked on 10/24/2010 by Anonymous from NY

    1 answer



      Air Valves are an integral part of any steam heating system, and will affect the heat output. The tighter you screw it in the less heat output, and the looser the valve the more heat output.

      Answered on 10/26/2010 by PexSupply Staff from NY
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