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3/4" GF 15/26 Iron Pump Flange Pair (NPT)

Brand:
Grundfos
SKU:
519601
Rating:
(36)
Q&A:
(14)
3/4" GF 15/26 Iron Pump Flange Pair (NPT)
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$17.43 each
In Stock
In Stock
Get 354 Wed, Jul 30
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Easy Returns No restocking fee for 90 days

Product Highlights

Product Highlight: Connection Size
3/4" Connection
Product Highlight: Connection Type
Threaded Connection
Product Highlight: Material
Cast Iron
Product Highlight: Used With
UP 15 Series Pumps (Some), UP 26 Series Pumps (Some), UP 43 Series Pumps (Some), UPS 15 Series Pumps (Some)

Description

Pair of Grundfos 3/4" NPT Circulator Pump Flanges.

Includes (2) flanges, (2) gaskets, (4) nuts & (4) bolts.

Specs

Connection Size:

3/4"

Connection Type:

Threaded

Type:

Pump Flanges

Material:

Cast Iron

Used With:

UP 15 Series Pumps (Some)

UP 26 Series Pumps (Some)

UP 43 Series Pumps (Some)

UPS 15 Series Pumps (Some)

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CURRENT ITEM
Product Image of 3/4" GF 15/26 Iron Pump Flange Pair (NPT)
3/4" GF 15/26 Iron Pump Flange Pair (NPT)
SKU: 519601
(36)
3/4"
Threaded
Pump Flanges
Cast Iron
UP 15 Series Pumps (Some)
UP 26 Series Pumps (Some)
UP 43 Series Pumps (Some)
UPS 15 Series Pumps (Some)
3/4"
Threaded
Pump Flanges
Cast Iron
00 Series Pumps
110 Pumps
111 Pumps
112 Pumps
113 Pumps
1400-10 Pumps
2400-10 Pumps
2400-20 Pumps
1400-45 Pumps

You May Also Need

UPS15-58FC, 3-Speed Circulator Pump, 1/25 HP, 115 volt
SKU: 59896341
Grundfos

Product Reviews

4.81 out of 36 reviews
100% would recommend this product
4.81
out of 36 Reviews
100% would recommend this product
WRITE A REVIEW
5 star
86%
4 star
8%
3 star
6%
2 star
0%
1 star
0%
WRITE A REVIEW

Most Liked Positive Review

Flanges shipped the same day and worked as expected.

I got these flanges to go with the Grudfos pump I bought. The website made it easy to pick the correct flanges, and the Q&A's/FAQ's helped also. Super good price on the flanges and they shipped the same day as I placed my order, just like the pump. I forgot to mention in my review about the pump that all the manufacturer's literature that the SupplyHouse has on their site made it easy for me to look at the pump curves and pick a Grundfos pump that had performance compatible with the expensive but junky "specialty hot tub pump" that I was replacing. Good price, good website, good service, fast shipping. That's all I can ask for!
VS

Most Liked Negative Review

Be aware!

Used two pairs of flanges to install two recirculating pumps on my home radiant heating system. After assembly and mounting the pumps all four flanges leaked! Had to remove and disasemble them. Found that the paint on the threads of all the flanges loosend and destroyed the plumbers tape during the initial assembly. YOU NEED TO CLEAN THE PAINT OUT THE THREADS BEFORE INSTALLING THE ADAPTER!!!!
Showing 1-10 of 36 reviews

Yes I would

Fast delivery and great service
Curt
13045
1 years ago
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Thumbs up

Good part
Ebag
Hessel
2 years ago
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as described

bought this for a Grundfos pump I had ordered from a different company. Later found out I had the wrong pump. By the time I pay shipping to send these flanges back to SupplyHouse I'll only get back a few dollars and those would be spent in fuel taking it to the post office. Otherwise, they were packaged good. Delivery was fast. No problems from SupplyHouse. I would buy from them again.
imsloan
Jacksonville, Florida
2 years ago
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Flange kit

Flange kit For circulator pump. Perfect fit works great
Drew
NJ
2 years ago
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Satisfaction!

Timely delivery, everthing as expected, thanks
Dean
Msp
2 years ago
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I am buying for a project i the fall

I was a bit disappointed to see the motor was an identical build as the last one that burned up and failed on the last system after 3 months
Doug
Scottsdale North Arizona
2 years ago
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Flange fitting

Parts arrived a day earlier then original specified, which allowed me to repair my circulator pump
Dave
Norristown
3 years ago
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Excellent

Great Service with excellent parts
Not a plumber
Alaska
3 years ago
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Yes, and i will buy this item again

This item is working perfectly with the circulator pump sku# 59896341 for the 2 pipes chiller/boiler air handler return lines.
The Seasons Condo
Alexandria, Virginia
3 years ago
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Very good product

Good product exactly what I wanted
Dan
Davenport
4 years ago
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Product Q&A

14 Questions
14 Questions
ASK A QUESTION

Q: does this product fit a grundfos type up 15-42fr pump?

Asked by jim 10 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

Yes, this flange would be compatible with the UP15-42FR pump.

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Q: What size gasket is this. My pump didn't come with the gasket.

Asked by Bwhunter85 10 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

The correct gasket to use with this flange is sku 510179. The gasket size is not listed, it is simply the gasket that is the correct size for the GF 15/26 flange type.

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Q: Does this flange work with the Grundfos UPS15-58FC pump?

Asked by joe 11 years ago

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Verified Author and ReplyVerified Reply- Supplyhouse Staff

yes

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Q: Is there a "Lead Free" version of this, for a potable water system, or will this do?

Asked by Forrest 11 years ago

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Don't use iron or steel pump flanges in a potable water system, as they will rust. I would use bronze, brass or stainless steel. If you truly need "lead free", then only use a product that is officially marked as such.

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Q: what are the demensions between bolt holes ?

Asked by marco 11 years ago

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The bolt holes are 3 1/4 for a 1" flange Sent from my iPhone

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- RockHillJR

If Grundfos, 3 1/4".

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Q: What is the measurement between the two bolt holes?

Asked by stubbs plumbing 12 years ago

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The Grundfos pump flanges measure 3- 5/32" center to center on the bolt holes.

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-

My cast iron flanges are 1" IPS . The dimensions are; 4 3/16" end to end. Width is 2 5/8". Body thickness is 9/16". There is a boss surrounding the 1" IPS threaded hole that adds 5/16" to the body thickness in the area surrounding the center hole.  The boss is 1 3/8" in diameter. The bolt holes are 3 1/8" center to center. The bolt holes are cast in place, tapered about 1/2" in diameter on the pump side, 9/16 on the pipe side. The holes easily clear the 7/16" typically used in pump installations. Good Luck

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Q: Will grundfos flanges work with taco pumps and b&g pumps as well, reason I ask is they seem almost half the price of the other brands, wondering why? Thanks

Asked by Dg 12 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

Most residential circulator pumps work with standard flanges that are interchangeable among brands. These flanges will work with any Taco or Bell & Gossett circulator that uses standard flanges.

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-

Yes, pumps and flanges are interchangeable. I prefer flanges with isolation valves if you do not already have a means to isolate the pump. Sent on the Sprint® Now Network from my BlackBerry®

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-

Yes, all the flanges interchange. Some are just a flat steel flange and some are cast steel, they both work fine.

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-

Yes they fit Carl Filomio Sirina Protection Systems Corp. www.SirinaFire.com

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-

Yes they are same as B&G

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-

As long as the inside diameter and bolt holes are the same size and match up to each other you should be fine!

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Q: In the other q&a section copper ntp connections are recommended for installation. Will this cause dielectric corrosion? If so, what other options are there?

Asked by Gefert 13 years ago

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I have used these Flanges with copper for 15 years with no problems

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-

After 5 years of use, I've not seen any dielectric corrosion. You can also use brass, it's cheaper. Robert.

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-

You will need to use a steel nipple and a dielectric union if you want to transition to copper. C. Scott Cole, PE LEED AP

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-

Although it is true that iron and copper do create a galvanic corrosion couple, in this example, it does not pose a problem. Here are the reasons: The galvanic potential of iron and copper are very close to each other so the potential for corrosion is low. Cast iron contains silicon that makes cast iron significantly more corrosion resistant than an iron based alloy such as common steel. Secondly the water in the system is self contained and thus over time becomes depleted of oxygen. Oxygen is necessary for corrosion. I have a 105 year old house with cast iron radiators and brass valves. In the 105 years there is no sign of corrosion of the iron anywhere near the brass valve.

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-

The other option is to use brass nipples.

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-

You need to use Brass nipples (not copper). This will eliminate the corrosion. I hope this helped You.

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Q: Do I need a 1" threaded connection, or can I solder a 1" copper pipe? If I need the threaded connection, where can I buy this transition piece to sweat copper?

Asked by Robbie 13 years ago

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Yes you need a threaded connection. Buy a 1" male threaded copper or brass adapter from pex supply to make the transition to sweat.

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-

Use a 1" MPT copper threaded coupling. Pexsupply has those.

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-

They are a 1 inch iron pipe tread. You can use a simple male adaptor. Of a brass nipple or gal nipple. Sent from my Verizon Wireless 4GLTE smartphon

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-

Yes, you will need two of the item below. I copied and pasted the below info from PEX supply. First, solder the fitting onto the copper pipe. Then take Teflon tape or pipe dope and put it on the copper threads. Put the two bolts that come with the pump flange thru the flange and put the nuts onto the bolts. Then take a long piece of steel pipe or pipe wrench and put it in-between the two bolts to tighten the pump flange onto the copper fitting. Make sure you have a wrench on the copper fitting to keep from twisting the copper pipe into a bowtie. LOL. If you put the copper fitting into the flange first and then try to solder it the flange acts like a heat sink and it will take a long time to get the copper hot enough for the solder to flow. Do not forget to clean and flux both parts of the solder joint before you try to solder it. If you are using the pump on a hot water heating system, you do not need to get the flange very tight, as you will be working with low system pressure. If the pump is for a domestic hot water return loop, you need to get it tighter. Energy saving tip. If you have a hot water heating system try to keep the pressure as low as possible as the higher the pressure the more heat AKA money it takes to get water hot. .433 PSI will raise a column of water one foot. Therefore, if your radiator is ten feet above the pressure gage that you are reading the pressure needs to be 4.33 PSI but take it up to 5 PSI just to make sure. This might be TMI but being one of those green people, I could not resist. Mike _1" C X Male Adapter_ (http://www.pexsupply.com/Cello-WP4-16-1-Copper-X-Male-Adapter-1024000-p) * SKU: WP4-16 * Brand: Cello

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-

All you need is a 1" copper x 1" threaded male adapter. Pex has one: SKU WP4-16. Also, most any home center should stock them as well. Good Luck!

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-

I found one at a hardware store. 1" threaded copper connector to what ever your main system copper pipe is. You will need reducers to get down to your main system is. Mick

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-

You need a male threaded adapter. Here is the piece you need: http://www.pexsupply.com/Cello-WP4-16-1-Copper-X-Male-Adapter-1024000-p

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-

https://www.pexsupply.com/Copper-x-Male-Adapters-138000

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-

If your Flanges are 1" Cast Iron. I would use a Brass 1" nipple, then a 1" female threaded X 1" solder adaptor. Then go from there. The Brass nipple will stop the electrolysis,(corrosion) between Cast Iron and Copper. Fittings can be found at ( Lowe's,Mennards, Home Depot, etc). I hope this helps.

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Q: Can I get the actual dimensions of this product? I'd like to know it's footprint basically. Thanks

Asked by Wes 13 years ago

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- Another PexSupply Customer

The flange is 1/2in thick, 2 1/2in wide,4 1/2in long, Bolt holes are1/2in,diameter and 3 1/4in center to center apart. With a female 1in NPT (Natoinal Pipe Thread) in the center. I hope this helps you.

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- Another PexSupply Customer

My cast iron flange dimensions are; 4 3/16" end to end. Width is 2 5/8". Body thickness is 9/16". There is a boss surrounding the 1" IPS threaded hole that adds 5/16" to the body thickness in the area surrounding the center hole.  The boss is 1 3/8" in diameter. The bolt holes are 3 1/8" center to center. The bolt holes are cast in place, tapered about 1/2" in diameter on the pump side, 9/16 on the pipe side. The holes easily clear the 7/16" typically used in pump installations. Good Luck

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