






🔥 Elevate your comfort game with silent, sleek steam control! 🔧
The Midline Valve 6J3I5-5 is a chrome-plated steel steam radiator air vent designed for quiet, efficient heat regulation. Featuring a compact, angle-adjustable mount and rust-resistant construction, it balances heating systems smoothly without noise or manual intervention. Ideal for tight spaces, it supports up to 10 PSI and installs quickly, making it a reliable upgrade for modern HVAC setups.





| ASIN | B08L5QQR3D |
| Batteries Required? | No |
| Best Sellers Rank | #161,696 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,480 in HVAC |
| Brand | Midline Valve |
| Color | Chrome |
| Customer Reviews | 3.5 3.5 out of 5 stars (210) |
| Date First Available | October 14, 2020 |
| Exterior Finish | Chrome |
| Inlet Connection Size | 0.13 Inches |
| Inlet Connection Type | 0.125 inches |
| Item Package Quantity | 1 |
| Item Weight | 8.4 ounces |
| Item dimensions L x W x H | 2 x 1 x 1 inches |
| Item model number | 6J3I5-5 |
| Manufacturer | Midline Valve |
| Material | Steel |
| Maximum Operating Pressure | 10 Pound per Square Inch |
| Number of Ports | 2 |
| Part Number | 6J3I5-5 |
| Product Dimensions | 2 x 1 x 1 inches |
| Size | Small |
| Specification Met | ASME B16.34 |
| Style | 1/8" Angle Adjustable Mount |
| UPC | 804595435328 |
R**T
Adjustable airflow
Nice product and which I most like about this is that its airflow is adjustable.
S**A
Winter cost requires genuine parts
This is no good and spits water messing up my floor and ceiling, the cheapest sometimes cost more. I went to the real plumbing store and one of the genuine valves cost almost $50, yes you heard me right, I don’t mind buying cheap clothes that doesn’t rip, but when it comes on to heat in winter we need to do better cheap doesn’t work on costly real estate.
A**R
Simple choice
Easy to use and install
B**C
No more cold spots
Radiators bleed off and operate great now
S**Y
Many of the valves do not seem to work
A lot of the valves keep venting, do not close even after hours of the boiler working
A**E
As expected
Good
J**S
Eh
Do they work ? maybe ? Pretty loud . Pretty cheap & lots of excess steam . No real control . There is no pressure stop with these . Once there’s pressure they are letting every bit out … not really effective for once your up to temp
T**M
good seller with good product
Item arrived earlier than expected and in perfect condition. Valves were easy to install and work very well.
S**I
Absolutely trash. All 5 blow out steam or water.
B**Z
They don’t seal at all. Not midline, Chinese knockoff crap. Total ripoff.
R**F
Took forever to get them, Showed up in a bag damaged and dented, figured no big deal its just dents, well they are also USELESS, the valve float pin never sets, the hot steam should expand the gases inside the float pin to close the rad off once tempurature is reached and when cooled it should drop down to allow for the next heat cycle, and should stay open only to allow cool air out so the rads don't become air locked. These things litterally piss steam the whole time unlessyou flip them unside down (using gloves ) to seat the float pin youself.... The bathroom one tries to seat but just ends up ticking obnoxiously ( see video ) I will be returning these....DON'T BUY
R**N
On my steam heat system, these air vent valves did not work. Some of them didn't release cold air, so the radiators didn't heat up. Others just stayed open and spewed steam (noisily) through the whole steam cycle. I tried each of them on different radiators, with the same results. I've never had this problem with other, similar air vents.
Trustpilot
3 weeks ago
2 weeks ago