'/%3E%3C/svg%3E)
Hover image to zoom
TruFLOW Visual Flow Meter, 0.25 to 2.0 gpm
 --%3E %3Csvg version='1.1' id='Fill' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23F15C02' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
Hover image to zoom
' fill='%23F15C02' d='M49 0C21.938 0 0 21.938 0 49s21.938 49 49 49 49-21.938 49-49S76.062 0 49 0m0 82.709a7.54 7.54 0 1 1 0-15.08 7.54 7.54 0 0 1 0 15.08m7.54-28.412a7.541 7.541 0 0 1-15.08 0V22.831a7.54 7.54 0 0 1 15.08 0v31.466z'/%3E%3C/svg%3E)
A2640027 has been discontinued
Discontinued December 11, 2025
This product was discontinued by the manufacturer.
MANUALS (2)
This item replaces: A2620027
Product Highlights
–
R20 Connection
Brass
PEX,PEX-AL-PEX
10 Year Warranty
Description
–
The high-flow rate visual meter (A2640027) is used with the A2610000 series TruFLOW manifolds. Features R20 male thread to connect with R20 threaded fitting assemblies.
Specs
–
| Connection Size: | R20 |
|---|---|
| Material: | Brass |
| Tubing Compatibility: | PEX,PEX-AL-PEX |
| Manifold Compatibility: | EP Truflow,Truflow |
| Flow Range (GPM): | 0.25 to 2.0 gpm |
| Warranty: | 10 Year |
Contact
+
Happy Independence Day!
Our Customer Support will be closed today in honor of Independence Day. We will be back tomorrow to answer your questions.
Call or text 888-757-4774
Special Hours
Closed Now
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
You May Also Need
Product Reviews
5 out of 3 reviews
100% would recommend this product
5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%
Showing 1-3 of 3 reviews
Solved a zone heating problem
I was having trouble with a zone keeping up for many years on in floor heat at my house. I wanted to balance 3 loops on one Uponor manifold. These were easy to install, adding them to the return manifold. My pex tubing was long enough to be able to use without cutting or tampering with in any way. I just threaded each end, one to the pex, the other to the manifold and away we went. Once installed the directions were straight forward enough and I just had to experiment with which loop was the longest and started there. Adjustment's were easy and I am happy with the results. The original installers had never balanced the zone or at least not properly. I can easily fine tune it using the visual indicators.
Jorgy
Mpls, MN
4 years ago
Verified Buyer
Was this review helpful to you?
Yes
Fast efficient service and wide selection of parts
Mike A
Oyster bay, ny
6 years ago
Verified Buyer
Was this review helpful to you?
Love these things
I am very happy my boiler tech installed fittings off the end of my zone manifold that enabled me to install these at a future time. Well the time came 12 years later when our boiler failed and the zones went out of wack. After installing these, balancing was a cinch. Now my system works to specs again.
SO
St Paul MN
7 years ago
Verified Buyer
Was this review helpful to you?
Product Q&A
6 Questions6 Questions
Q: I have a different manifold. Can I adapt this meter to be used simply in a 1/2" pex line?
Asked by Randall 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffIt could be adapted. You would need two compression fittings A4020500 and one R20 nipple A4322020.
Was this review helpful to you?
Q: Does this meter allow more than 2 gpm? Does it restrict flow at all?
Asked by Andy 12 years ago
Add your answer
Verified Reply- Supplyhouse Staffno, and yes
Was this review helpful to you?
Q: Can these flow meters be used with QS connectors on a try flow manifold
Asked by larry 12 years ago
Add your answer
Verified Reply- SupplyHouse StaffYes, they are designed to thread between the manifold itself and the QS fittings which attach to the tubing.
Was this review helpful to you?
Q: I have my manifold installed upside down as the loops are from above. Will this flow meter work upside down?
Asked by Matthew 12 years ago
Add your answer
Verified Reply- SupplyHouse Staffthe Tru FLOW Meter may be installed in a vertical or horizontal position. Do not install the Tru FLOW Visual Flow Meter upside-down (arrow pointing downward) as it will affect the accuracy of the reading
Was this review helpful to you?
Q: I read that you read the flow on the top where the spring meets the yellow piece but then how would you read the lower flow rates? The top of the yellow plastic starts at .6? How then would you read a flow between .25 and .6? Doesn't make sense.
Asked by Hydropro 13 years ago
Add your answer
Verified Reply- PexSupply StaffYou may want to consider Uponor's A2640015 flow meter, which offers smaller flow increments.
Was this review helpful to you?
-
You would have to get a different flow meter. One that reads smaller flow amounts.
Was this review helpful to you?
Q: Can I put this meter any place in my hydronic system, and will it read accurately when placed in series with 3/4 pipe?
Asked by Cold Feet 13 years ago
Add your answer
Verified Reply- PexSupply StaffThis meter is designed for use on the Uponor Truflow Manifold systems, and uses R20 threading. You would have to adapt from R20 to NPT or sweat to install this unit elsewhere in the system.
Was this review helpful to you?