150A, 1/2" Water Hammer Arrestor Zoom

150A, 1/2" Water Hammer Arrestor

SKU:0269503

Brand: Watts

Watts
0269503 has been discontinued.
Direct Replacement:
SKU: 0121227
Brand: Watts

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.

2

Specs

Material: Stainless Steel
Size: 1/2"
Connection Type: Male NPT

Description for Watts 0269503

Series 150A Water Hammer Arrestors are used in residential applications to control water pressure shock and prevent water hammer conditions. It consists of a pre-charged air chamber that is rechargeable, an air-tight sealing cap, standard tire valve connection for easy charging, stainless steel top, sealed-in diaphragm, lower stainless steel chamber, and brass hex adapter for easy installation. It can be installed in new or existing plumbing systems in any angle.

Specifications:

  • Model 150A is a 1/2" fitting. (adapter only)
  • Maximum Working Pressure: 150psi (10.3 bar)
  • Maximum Shock Pressure: 200psi (13.8 bar)
  • Maximum Velocity: 10 F.P.S.

150A, 1/2" Water Hammer Arrestor

REVIEW SNAPSHOT®

by PowerReviews
Watts150A, 1/2" Water Hammer Arrestor
 
4.8

(based on 35 reviews)

Ratings Distribution

  • 5 Stars

     

    (29)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 35 customers

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Displaying reviews 1-10

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5.0

Solved the problem

By Siena says yes

from philadelphia, pa

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

This product solved the hammer problem with the washing machine - that no other "big box" hardware could. I knew that there must be a product out there for residential use that would be better than the little products sold at the hardware stores. Even my plumber - who I have use a lot - did not know about this product. A little web running and I was able to locate the hammers at Pex and they were delivered the next day. What can be better than that. Yes, yes, yes - get this product for your residential water hammer problems - and fix it yourself!

 
5.0

Works well

By Toby

from Pearland, TX

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

New high-efficiency washing machine was wreaking havoc with my pipes.
This product was the only one that would quiet them down.

I bought with the 150HA threaded adapter to hook to my washing machine/inlet valves. These threaded adapters need to be a bit longer so the Arrestor isn't bumping into the wall box for the washing machine inlets. Also, be sure to tighten the female end of the hose coupling on the 150HA - these were loose on both of mine and leaked. I had to uninstall, teflon tape and find a faucet wrench (adapter has a hex inside for tightening) - a large hex wrench could work too.

Make sure you check your water pressure before installing. I checked mine after installation - it was nearly impossible to hook a bike pump to them - too high and not enough clearance.

 
5.0

Solved the problem

By Fred

from Indiana

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

The unit comes pressurized to ~30 psi, as my house pressure is around 60 psi, I simply adjusted the pressure accordingly - works great, removed the bang from the toilet closure.

 
5.0

Eliminated water hammer in most of the h

By Plumbed Out

from Chicago, IL

Verified Reviewer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

Installed one at the outlet of the water heater and one at the outlet of the whole house water filter. Eliminated water hammer for the entire house except one pesky toilet tank.

 
4.0

150A, 1/2" Water Hammer Arrestor

By x-men

from Bixby, OK

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

Used this Water Hammer Arrestor at my washer/dryer

(1 of 2 customers found this review helpful)

 
5.0

Excelent product.

By RkyMtnRon

from Denver, CO

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

Bought two of these units for use with a new LG, "All-in-one" washer/dryer unit, that cycles water valves more often than conventional units.

Totally solved serious water-hammer issues, much better than a piston-style arrestor.

Had to make a custom "Tee" unit with hose adapters, and a custom wall-mount, but worked like a charm. My customer was delighted with the final assembly and performance.

Photos available on request.

(1 of 1 customers found this review helpful)

 
5.0

Watts 150A Water Hammer Arrestor

By typesix

from MA

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

Replaced two of the exact same for my mother-in-law. Her old(20+ years) were in use for clothes washer and had rusted badly due to water leak from a pipe above them. Like the ability to add pressure to match local water pressure conditions. Easy to install.

 
5.0

water hammer

By spa

from phila, pa

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

worked great and is way better then anything you can get at [@] and is built very well

 
4.0

washing machine hammer

By mike

from n.h.

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

I installed the watts 150a arrestor on hot and cold sides on laundry box, played with pressure settings and "BAM" no more hammer

 
5.0

Worked for me

By Don

from Old Town, Me.

Verified Buyer

Comments about Watts 150A, 1/2" Water Hammer Arrestor:

i had pipe running from the upstairs bath that were clanging whenever the shower was turned off (bad). Granted that the pipes were not secured as well as they should have been(I secured when I added the arrestor) I think that the real solution was the addition of this product. Easy to do with sharkbite tees. Would recommend.

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

4 Questions | 9 Answers
Displaying questions 1-4
  • Q:

    I noticed in the installation instructions that these arrestors are installed near the washing machines, toilets, dishwasher, etc. Do I need multiple arrestors or can I put one in the supply line? I had installed a shark bite pipe style arrestor and it worked for a while but the hammer has returned. Static water pressure is 90 psi
    Asked on 3/10/2012 by mijsenrab from Manorville, NY

    2 answers

    • VERIFIED BUYER

      A:

      If your pipes are copper it may be that your pipes are overly secured not
      allowing for any give. Also if your pipes are copper and flexing and
      knocking against wood members then felt wrapping may need to be installed
      around the pipes were knocking happens, usually in crawl space under home,
      to dampen/kill the noise.
      JS

      Answered on 3/10/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      For the arrestor to work well, it is placed near the appliance. You will need multiple arrestors for effectiveness. The Watts allows you add air pressure to recommended 5psi below static water pressure.

      Answered on 4/26/2012 by typesix from MA
  • Q:

    Some time ago I believe I adjusted my WHA from the instructions included with it, but I lost the instructions. Help! There is some banging of the pipes creeping in occasionally.
    Asked on 9/5/2011 by Anonymous from Roxbury, MA

    4 answers

    • VERIFIED BUYER

      A:

      Try shutting off water and releasing the pressure in the hot and cold lines. Then using a tire gauge check arrestors pressure, you should have pressure if not inflate to 25# or so. This should help with bang

      Answered on 3/5/2012 by mike from n.h.
    • CUSTOMER CARE

      A:

      Please refer to the Product Specifications and Installation Instructions listed under the 'Manuals' tab for this product.

      Answered on 9/6/2011 by PexSupply Staff from NY
    • VERIFIED BUYER

      A:

      I would first check the air pressure within the 150A and, like most inflated innertubes, it might have lost some of its pressure. You can download from PexSupply the instructions to the 150A and find the air pressure required for your dynamic water pressure. You have two pressures, one is the static pressure which is if you attached a pressure gauge to, lets say, your outdoor faucet, and opened the faucet that would be your static water pressure. If you then opened up your garden hose it would read the dynamic pressure which is the pressure the instructions talk about. What you might do that's a little easier is to check the air pressure currently in the Watts arrestor while the toilet or washing machine is asking for water and see if it matches the the pressure you need per the instructions and then add or reduce the appropriate pressure prescribed. If that's a little bit too much I'd just add 5 lbs of pressure using a bicycle pump and see what happens.

      Answered on 10/24/2011 by Daryl the layman plumber from Cape Code, MA
    • VERIFIED BUYER

      A:

      there is air being introduced in your pipes. Unless the WHA is leaking, it should be fine.

      Answered on 12/6/2011 by the accelerator from st. paul, MN
  • Q:

    What do you use to charge with air the WATTS 150A 1/2" Water Hammer Arrestor? Would a regular bicycle pump work or I will need a compresort?
    Asked on 5/10/2011 by JOHN from CT

    1 answer

    • CUSTOMER CARE

      A:

      This unit is pre-charged to 30 psi.

      Answered on 5/18/2011 by PexSupply Staff from NY
  • Q:

    I have 85 psi water pressure from the city. Want to install this on inlet of water heater.So I would pre charge to 90?
    Asked on 3/9/2011 by Anonymous

    2 answers

    • CUSTOMER CARE

      A:

      This part will not boost the pressure in your system.

      Answered on 3/14/2011 by PexSupply Staff from NY
    • A:

      From the installation instructions: "Unit is factory pre-charged to 30psi (207 kPa). If system pressure is higher than 35psi (241 kPa), add air until the valve is 5psi (34 kPa) below the system flow pressure."

      Based on that, I would recommend charging to 85 psi before installing. The idea is to ensure that the diaphragm is in the ideal position (not too compressed, but still sufficiently compressed) when hooked up to the supply line. Note that once hooked up, I would expect the pressures to come to equilibrium pretty quickly, and that unless that membrane is insanely strong, the pressure in the air above the water should match the pressure in the water. Also, when water is flowing through the line, the pressure in the line drops due to both line losses and to the Bernoulli effect.

      Answered on 3/4/2012 by tovod-everett from Anchorage, AK
Displaying questions 1-4

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