Member of Morris Group International
Member MGI
MGI
Websites
Morris Group Online
Division Directory
Internal Contacts
EIS Cloud
JR Smith Orders, Invoices, Inventory & More
Employee Advocacy
MGI's brands on social media
Literature Library
Literature odering and fulfillment
MasterSpec
Product configs and specs
MGI ProPad
Marketing and sales content
MGI Swag
MGI branded gear and clothing
RepLogin
Order Status, Analytics, Inventory, and Documents
Website Analytics
Realtime data and analytics
Favorites
0
Sign in
Products
Water Closet Supports
0100 - 0600 Series
Smith Fluid Controls
Trap Primers and Distribution Units Series
Lavatory and Sink Supports
0700 - 0900 Series
Roof Drains
1000 Series
Floor Drains
2000 Series
Sanitary Drains
3000 Series
Cleanouts, Access Doors
4000 Series
Water Hammer Arresters
5005 - 5050 Series
Hydrants
5500 - 5900 Series
Special Purpose Drains, Fittings
6000 Series
Backwater Valves and Traps
7000 Series
Interceptors
8000 Series
Specialty Plumbing Fixtures
9000 Series
Stainless Steel, Carbon Steel
9000 Series
Smith Trench Drain
2700 - 9600 - 9800 - 9900 Series
Smith Light Commercial
100 - 800 Series
Browse By
Green Roof Drains
Kwik Ship® Brands
Labor Saving Products
Lead-Free Products
Parking Deck Drains
Top Sellers
Learn
Contractor Labor Saving
Trap Primers & Distribution Units
Stainless Steel Threshold Drain
Kwik Ship Brands
News
News
Product Modifications
About
About
Certifications
Audiences
Markets
Sustainability
Made to Order
Support
Resource Library
Materials & Finishes
CEU/LU
Abbreviations & Prefixes
Prefixes and Suffixes
Price Guide & UPC Data
Photo Gallery
FAQ
Contact
Contact Us
Schedule a Webinar
Find a Representative
0
Menu
Home
Return to FAQs
Water Hammer Arresters Frequently Asked Questions
Will water hammer arresters control the movement in piping mains?
The movement in piping mains is caused by shock and partially by the flow of water through the mains. The greatest movement is caused by shock which can be controlled by the installation of water hammer arresters. The movement caused by water flow can be controlled by the proper placement of pipe hangers and supports.
Is it possible to control the shock created by pumping equipment?
When a pump shuts off, some degree of shock will be experienced in the discharge line. This is caused by the back surge of water to the pumping equipment. The shock can be controlled in most applications by the installations of a properly sized water hammer arrester. The unit should be installed at a tee connection in the vertical discharge line.
Will a water hammer arrester prevent check valve slam?
A water hammer arrester will absorb the shock and minimize the slam noise. A soft seat in the check valve will then assure a quiet closure.
Is the shock generated in dishwasher piping controllable?
A solenoid or other type of quick closure valve is employed for dishwasher applications. A properly sized water hammer arrester installed on the pressure side of the solenoid valve will eliminate the shock and noise.
Is the shock generated in home washing machines controllable?
Yes, a properly sized water hammer arrester placed on the cold and hot water supplies to the washing machine will absorb the shock as caused by quick closure devices.
Can shock be prevented in other types of liquid conveying systems?
The
5005-5050
stainless steel bellows units can be used with most types of liquid conveyed in a piping distribution system. Therefore, if a shock is encountered, it can be controlled. When liquids other than water are involved, it is recommended that Smith’s Sales Engineering group be consulted for evaluation.
Will water hammer arresters eliminate piping vibration?
If the vibration is caused by the occurrence of shock in the piping system it can be avoided if a properly sized water hammer arrester is installed near the quick closure valve.
Are water hammer arresters required in the average residence?
Yes, a severe shock can occur in the residential piping system, especially when excessive water pressures are involved. Most of the premature failures of piping, hot water storage heaters, home laundry machines, automatic control valves and flush tanks or valves, may be attributed to shock caused by quick closure valves. Properly sized water hammer arresters should be installed on the hot and cold water supply piping to that fixture, equipment or apparatus wherein shock can be produced. A pressure reducing valve installed on the discharge side of the water meter can be most helpful in protecting the residential piping system.
Do Water Hammer Arresters require access panels?
It is always wise to provide access to any mechanical device that may need servicing or replacing during the life of the building.
Can a Water Hammer Arrester be placed at the top of a riser and be effective?
No. The location of the unit itself is essential for proper operation and effectiveness. Usually, the top of the riser is so remote to the source of the problem, the unit never has an opportunity to perform its job. The location should be at the piping serving the fixture(s) and normally between the last two fixtures. Refer to the Smith ‘Yellow Pages’ catalog,
Water Hammer Arrester
section for complete information on sizing, placement and selection. The Plumbing & Drainage Institute (PDI) Water Hammer Arrester Standard,
WH-201
, may also be referred to for sizing, placement and selection.
Where are water hammer arresters required?
Water hammer arresters are intended for use in either cold or hot water supply lines. Generally, they are needed anywhere quick closing valves are installed. Such valves can come in the form of faucets, flush valves, washing machines, dishwashers, etc. Jay R. Smith Mfg. Co.’s water hammer arresters are available in multiple types, connection sizes and capacities for various applications. Each version is designed to control the destructive shock of water hammer when these quick closing valves are operated. The internal construction of these devices allow them to absorb and reduce intense pressure spikes, which occur in these instances, to safe levels, preserving the piping system. The sizes and locations are typically specified by the plumbing engineer of record for a given facility. In order for water hammer arresters to work as designed, they must be sized correctly based on the number of fixtures and located properly in the water piping system to effectively mitigate the damaging force of water hammer.
Logout
Sign in
Favorites
0
Products
Water Closet Supports
0100 - 0600 Series
Smith Fluid Controls
Trap Primers and Distribution Units Series
Lavatory and Sink Supports
0700 - 0900 Series
Roof Drains
1000 Series
Floor Drains
2000 Series
Sanitary Drains
3000 Series
Cleanouts, Access Doors
4000 Series
Water Hammer Arresters
5005 - 5050 Series
Hydrants
5500 - 5900 Series
Special Purpose Drains, Fittings
6000 Series
Backwater Valves and Traps
7000 Series
Interceptors
8000 Series
Specialty Plumbing Fixtures
9000 Series
Stainless Steel, Carbon Steel
9000 Series
Smith Trench Drain
2700 - 9600 - 9800 - 9900 Series
Smith Light Commercial
100 - 800 Series
Browse By
Green Roof Drains
Kwik Ship® Brands
Labor Saving Products
Lead-Free Products
Parking Deck Drains
Top Sellers
Learn
Contractor Labor Saving
Trap Primers & Distribution Units
Stainless Steel Threshold Drain
Kwik Ship Brands
News
News
Product Modifications
About
About
Certifications
Audiences
Markets
Sustainability
Made to Order
Support
Resource Library
Materials & Finishes
CEU/LU
Abbreviations & Prefixes
Prefixes and Suffixes
Price Guide & UPC Data
Photo Gallery
FAQ
Contact
Contact Us
Schedule a Webinar
Find a Representative
Find a Rep
Morris Group Online
Morris Group Websites
Corporate Manufacturing Divisions
Acorn Beekeeping Equipment, LLC
Acorn Engineering Company
Acorn-Gencon Plastics, LLC
Acorn Thorn Limited
AcornVac Plumbing Systems, Inc.
Chronomite Laboratories, Inc.
MGI ConTrols
Croker Fire Prevention
Elmco & Associates
Elmco Silver State
Elmco Stewart
Elmco Swords
Elmdor Manufacturing
Engineered Solutions
Fabrication & Manufacturing Mexico
FireEnd
Fire Pro Nozzles & Monitors
Jay R Smith Mfg. Co.
Larsen's Manufacturing Co.
Morris Industries Mexico
Morris Lee, LTD.
Murdock Manufacturing
Neo-Metro by Acorn
Potter-Roemer
Safety Manufacturing
Smith Chrome Plating
Whitehall Manufacturing
×
Enter your email address to sign in or create and account
Acorn Engineering is part of
Acorn engineering is part of
Powered by
Morris Group Online >
from the
Morris Group International
family of sites.
Search across all
MGI Divisions
All results