Backflow Blog

January 24th, 2014 by

Introducing American Backflow’s Backflow Blog


Welcome to American Backflow Products Backflow Blog.  At American Backflow we strive to provide you with superior service as well as steadfast reliability and the technical expertise needed to help you get your repair done efficiently.  Through this blog we hope to offer insight into the changes within our industry that will affect your business, repair tips and help, employee showcases and many other topics of interest.  We realize you are the ones working on backflow preventers day in and day out and your expertise could be of great help to other backflow technicians.  We hope this forum gives you a platform to pose questions and interact with other members of the backflow community.  Please feel free to leave a comment or if you have a questions about a repair or would like to post a picture of one of the crazy installations you see please do.  Please feel free to leave a comment or suggestion we would love to hear from you.

 

05/06/2015  1 1/4″ – 2″ 009 – How to Distinguish between the Models?

How can I identify the differences between the Watts 007 series in 1 ½” & 2” sizes.

The Watts 11/4 thru 2” 009 series assemblies have been updated or modified several times over the years. Like the ¾ and 1” sizes, these modifications are dependent on the size of the assembly and should be indicated on the data plate, i.e. M1 or M2.  Let’s start with the original 009 series. This assembly, as well as, the 009M1 uses the same size and style of body and cover for the 11/4, 11/2, and 2” sizes, so it is not as easy to distinguish by its outward appearance. So, we will have to look inside.  This original 009 used a relief valve stem assembly which was made of Brass. Another important feature to look for would be the check valve modules. Like the relief valve stem assembly these check valves have a Brass disc holder, which houses the rubber disc. Looking for these two important features should help in identifying the original 11/4” –2” 009.

The 11/4”, 11/2”, and 2” sizes of the 009 were first modified to the 009M1. Because this modification uses the same size and style of cover as the original, we’ll also have to take a look inside of this one for some changes or modifications that will help us with proper identification. This 009M1 uses the same relief valve stem assembly as the original, which is made of brass, so you’ll have to take the relief valve assembly out and look further, because the difference is in the check valve modules. Unlike the original, which uses brass disc holders, the 009M1 currently has Black Plastic disc holders which house the rubber check valve discs.

The next modification was to the 1-1/4 and 1-1/2” sizes only. This assembly was modified to the 009M2. This modification is somewhat distinguishable from the others by outward appearance. Although the access cover uses (6) bolts like the others and is shaped the same, it is smaller in size. The access cover is only about 5 inches in diameter, compared to the others, which are about 6 inches in diameter. Also this 009M2 is only 17-3/8 inches long including ball valves, compared with the others, which are over 21 inches long.  This modification uses a black plastic retainer compared to the stainless steel one in the others and the relief valve assembly is made of Black plastic, and the check valve cage and seat are also black plastic.

The next modification was made to the 2” size only. This 2” size also uses the modification number 009M2. This modification unfortunately is not distinguishable by outward appearance from the 009, or 009M1 because of the same style and size of the access cover. So once again we’ll point to the inside for the differences. The most noticeable difference would be the relief valve stem assembly, which is made of Black Plastic. The check valve modules will have a white plastic seat and cage assembly that house a black plastic disc holder.

Summary Points to Remember:

(1) 1-1/4” – 2” 009 – Brass Relief Valve/ White Cage & Seat/ Brass Disc Holders

(2) 1-1/4” – 2” 009M1 – Brass Relief Valve/ White Cage & Seat/ Black Plastic Disc Holders.

(3) 1-1/4” –1-1/2” 009M2 – Black Plastic Relief Valve/ Black Cage & Seat/ Black Plastic Disc Holders.

(4)  2” 009M2 – Black Plastic Relief Valve/ White Cage & Seat/ Black Plastic Disc Holders.

 

03/23/2015  Watts, Ames & Febco Price Increase

Watts, Ames & Febco will be having a price increase that will take effect on March 30th, 2015.  This will effect all of their products including backflow repair kits and individual parts.  Click this LINK to view the new price sheets.

 

02/23/2015  Repair Blog

We get approached everyday about backflow repair questions and requests for information on particular backflows.  We know there are many different backflows that have been produced and having access to information on repair is imperative.  We will start posting some of the questions we get asked here in our Blog section for you to access.  If you have any comments please free to call or Email Us.

 

02/23/2015  1 1/2″ & 2″ Watts 007 – How to Distinguish between the Models?

How can I identify the differences between the Watts 007 series in 1 ½” & 2” sizes.

The Watts 1-1/2” and 2” sizes of the 007 series assemblies have been updated or modified a couple of times over the years. Like the 009 series, the modifications made to the 007 series are dependent on the size of the assembly and should be indicated on the data plate i.e. M1 or M2.

The original 007 was produced in the 1 ½” and 2”  inch sizes. This model is distinguishable from the M1 & M2 models by outward appearance. This model has a brass access cover and (6) cover bolts to secure it to the body. Just in case someone has painted the device to make it hard to tell whether it’s brass or not, the access cover is slightly raised in the center to have a dome-like appearance. If you are not sure by outward appearance, take a look inside. This original has a stainless steel check valve retainer, and the disc holders in the check modules are made of brass as well.

The next modification was to the 11/2” and 2” inch sizes.  This modification was labeled the 007M1.  This modification is easy to distinguish from the original by outward appearance. For starters this modification sports a Flat Stainless Steel  access cover which, also utilizes (6) bolts to secure the cover to the body.  Since the 007M2 uses the same access cover, you need to check the internals to distinguish between the two models. This 007M1 model also has a stainless steel check valve retainer but, the disc holders in the check modules are made of black plastic. One thing to note is that the 2” 007M1 is still a current model and only the 11/4” and 11/2” sizes were modified next.

The next model to be produced was in the 1 ¼” inch and 1 ½” inch sizes only. This modification was labeled the 007M2. This modification uses the same flat stainless steel access cover as the 007M1, so to be able to distinguish the 007M2  from the 007M1 you will have to take a look inside.

This modification has a Black Plastic check valve retainer opposed to the stainless steel retainer in the other two models, and the check valve modules and disc holders are completely plastic and black in color.

Summery Points to Remember:

1.  1 ½” and 2” original 007:  Brass Cover, Stainless Steel Retainer, White Seat and Cage,  Brass Disc Holders.

2.  1 ½” and 2” 007M1:  Flat Stainless Steel Cover, Stainless Steel Retainer, White Seat and Cage, Black Disc Holders.

(Note: 2” 007M1 is still current)

3. 1 ¼” & 1 ½” 007M2:  Flat Stainless Steel Cover, Black Plastic Retainer, Black Seat and Cage, Black Disc Holders.

 

10/7/2014  E. Coli Contaminates Mercer Island Water

Here’s an article about a possible backflow occurence that caused a boil notice in Mercer Island, WA.  The city believes the contamination may have occurred due to a missing backflow on a irrigation system.  Click here to read the article

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