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This item has been discontinued and is unavailable for purchase. For more information call 1-800-GRAINGER (472-4643).

Water Hammer Arrestor, 1/2 In MNPT, SS

WATTS

Price: NA / each

Item no longer available
Some discontinued items may be available through your local branch.
  • Item # 3A559
  • Mfr. Model # 150A
  • NSN # 4510-01-173-3772
  • UNSPSC # 40141609
  • Catalog Page # 4078
  • Shipping Weight 0.7 lbs.
Country of Origin USACountry of Origin is subject to change.

Technical Specs

  • ItemWater Hammer Arrestor
  • Body MaterialStainless Steel with Brass Adapter
  • Connection TypeMNPT
  • Pipe Size1/2"
  • Factory Set Pressure60 psi
  • Overall Height5-1/4"
  • Diameter4-13/32"
  • Max. Pressure150 psi
  • Temp. Range33 Degrees to 180 Degrees F
  • StandardsUPC, ASSE 1010

Compliance and Restrictions

  • This product has been certified by a third party to be compliant with the “Safe Drinking Water Act” requirements for low lead in potable (human consumption - drinking and cooking) and non-potable water applications (non-human consumption).

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Product Q&A

(1 Question : 1 Answer)

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I purchased the Watts 150a arrestor and it states that the precharged pressure can be increased. Can you tell me how to increase the pressure through the valve stem located on top of the unit? Is it just through an ordinary compressor or does one need a special volume device?
Thanks much
GG
1 year, 10 months ago
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Answers

Answer: 
Hello Greg,
You can remove the cap on the little brass device on top, than you can use a Tire filler on you portable compressor or bike pump. You can also check the pressure with a Tire Inflation Gauge. If you over fill it, the arrestor will not stop the water hammering so if the pressure is heigher than the system it will not work.
I hope this answers your question, thanks for using Grainger Ask & Answer!

Wadeh
1 year, 10 months ago
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