Anti-water hammer valves
chiefneil
17 years ago
Featured Answer
Sort by:Oldest
Comments (8)
chiefneil
17 years agoRelated Discussions
Water hammer on drip irrigation when valve opens
Comments (5)DeRock, I checked and the components are all rated for low flow applications and my irrigation line definitely falls within the operating ranges. The parts come together as part of a Toro drip irrigation kit. The components were assembled in the order I describe in my original post, which was the order depicted by the kit instructions (valve->filter->30PSI pressure regulator->drip hose) You did give me an idea to measure the pressure after the entire assembly though to ensure the regulator is doing its job (though it's not likely since both zones are hammering). I'm glad I installed pvc unions so I could disconnect for troubleshooting purposes. I'll keep you in the loop. This post was edited by lhpineapple on Thu, Apr 17, 14 at 9:48...See MoreWater Hammer problem from hose water timer
Comments (4)A water hammer is especially likely when there's a long column of water behind a dead end valve, so the long run to a yard faucet probably qualifies because there is all that water trying to come to a sudden stop. I suspect your problem is that you're essentially slamming four faucets closed at once, which is almost certain to hammer. Consider getting away from all four valve closing together and use multiple single timers set to different times, which would result in a much smaller flow coming to a sudden stop. I would definitely try letting it shut down with only one hose and see if it hammers. I suspect it will not....See MoreWhere did you put your ugly anti-siphon valve?
Comments (7)I'm surprised that in a gut remodel accommodations couldn't be made for proper venting. Or did they just forget? Even if they did forget, I'm not up on plumbing code anymore, but you used to be able to wet vent 60" laterally with 2" drain pipe. An air admittance valve is going to leak water every time the water is turned on or off? I've NEVER seen one leak water when properly installed. That said, I've seen the valves hidden in adjacent closets. I've seen the valves run up an interior wall, and then a little "medicine cabinet" type of enclosure was built to house the valve. The door to the cabinet can be made to look like a painting or photo hung on the wall. Sort of like a hidden compartment. Easy to do. The valve does need to be accessible so it can be replaced if needed. The higher above the waterline of the tub you terminate the valve, the less likely you'll ever see water dribbling out of the valve. And again, water should never exit the valve unless there is multiple failure. Clogged line, the valve flapper fails, etc. Any backup within the tub's drain line itself should backup and exit out of the tub's overflow before it ever reached the height of the valve. If you do bring the valve out of the tub deck, then disguise it with a small enclosure that slips down over the top of the valve and its standpipe....See MoreWater Hammer Arresters for Shower
Comments (8)If you enjoy soldering never let it be said that I stood in your way because I too enjoy soldering however let us examine what the differences in flow would be. When computing pipe friction we must first compute the "Total Developed Length of Pipe (TDLP)". TDLP is the physical length of the actual pipe + the additional friction losses introduced by fittings, which is know as "Fitting Insertion Loss (FIL)". The Fitting Insertion loss is different for each type and size of fitting however it is always expressed as an equivalent length of straight pipe that would introduce the same amount of friction. The FIL does vary considerably from one type of fitting to another and it also varies by the diameter of the fittings so it is important to check the actual fitting insertion loss tables, You will no doubt be using 1/2" copper for these lines so let us examine the FIL for 1/2" 45deg elbows and 1/2" 90deg elbows. The 1/2" 90 elbow FIL is 1Â of pipe. The 1/2" 45 elbow FIL is 0.5' of pipe. You would be using two 45deg elbows in place of a 90deg elbow therefore the FIL with two 45elbows would be 2x 0.5' = 1ft of pipe. Therefore to answer your quandary, there would be no difference in flow in which case I personally would use the 90Âs to minimize the number of joints that could possibly fail in future, and if I felt I still needed to play with the torch I would just go to the bench and solder up a little high chair for my nieces doll babies....See Moreall_wet
17 years agochiefneil
17 years agonovice_grower
17 years agohookoodooku
17 years agochiefneil
17 years agospencer_electrician
17 years ago
Related Stories
GARDENING GUIDESEssential Watering Tips for Your Edible Garden
To give your edible plants just what they need, check out these guidelines for how, when and how much to water
Full StoryBATHROOM DESIGNDreaming of a Spa Tub at Home? Read This Pro Advice First
Before you float away on visions of jets and bubbles and the steamiest water around, consider these very real spa tub issues
Full StoryBATHROOM DESIGNOut With the Old Tile: 8 Steps to Prep for Demolition
This isn't a light DIY project: You'll need heavy-duty tools and plenty of protection for your home and yourself
Full StoryTASTEMAKERSBlacksmith Extraordinaire Andrew Crawford's Gates
Follow the fascinating process, which uses ancient art and modern technology, and see the blacksmith's breathtaking finished gates
Full StoryKITCHEN SINKSEverything You Need to Know About Farmhouse Sinks
They’re charming, homey, durable, elegant, functional and nostalgic. Those are just a few of the reasons they’re so popular
Full StoryREMODELING GUIDESContractor Tips: Advice for Laundry Room Design
Thinking ahead when installing or moving a washer and dryer can prevent frustration and damage down the road
Full StoryBATHROOM DESIGNHow to Choose the Right Bathroom Sink
Learn the differences among eight styles of bathroom sinks, and find the perfect one for your space
Full StoryHOUSEKEEPINGWhat's That Sound? 9 Home Noises and How to Fix Them
Bumps and thumps might be driving you crazy, but they also might mean big trouble. We give you the lowdown and which pro to call for help
Full StoryBATHROOM DESIGNHow to Design an Accessible Shower
Make aging in place safer and easier with universal design features in the shower and bathroom
Full StoryHOUSEKEEPINGBaking Soda: The Amazing All-Natural Cleanser You Already Own
Battle grime, banish odors and freshen clothes with this common nontoxic cupboard staple
Full Story
sylvansupe