2017 wholesale price DIN261 DIN787 DIN186 ASME B18.5 AWWA C111-A21.11 T Bolts for Morocco Factories
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DIN261 DIN787 DIN186 ASME B18.5 AWWA C111/A21.11 T Bolts Also be available acc. to customer’s requirement and drawing Metric Size: M6-M30 with various lengths Inch Size: 1/4”-1” with various lengths Material Grade: ISO 898-1 class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, ISO 3056-1 A2-70, A4-70 SAE J429 2, 5, 8; ASTM A193/A320 B7, B8, L7; Finish: Black Oxide, Zinc Plated, Hot Dip Galvanized, Dacromet, and so on Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advantage: High Quality and ...
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2017 wholesale price DIN261 DIN787 DIN186 ASME B18.5 AWWA C111-A21.11 T Bolts for Morocco Factories Detail:
DIN261 DIN787 DIN186 ASME B18.5 AWWA C111/A21.11 T Bolts
Also be available acc. to customer’s requirement and drawing
Metric Size: M6-M30 with various lengths
Inch Size: 1/4”-1” with various lengths
Material Grade: ISO 898-1 class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, ISO 3056-1 A2-70, A4-70
SAE J429 2, 5, 8; ASTM A193/A320 B7, B8, L7;
Finish: Black Oxide, Zinc Plated, Hot Dip Galvanized, Dacromet, and so on
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive price,Timely delivery; Technical support, Supply Test Reports
Please feel free to contact us for more details.
Product detail pictures:
Our pursuit and company goal is to Always satisfy our customer requirements. We continue to develop and design superior quality products for both our old and new customers and achieve a win-win prospect for our clients as well as us for 2017 wholesale price DIN261 DIN787 DIN186 ASME B18.5 AWWA C111-A21.11 T Bolts for Morocco Factories, The product will supply to all over the world, such as: Benin, Toronto, India, With its rich manufacturing experience, high-quality products, and perfect after-sale service, the company has gained good reputation and has become one of the famous enterprise specialized in manufacturing series.We sincerely hope to establish business relation with you and pursue mutual benefit.
WEBSITE: https://www.swimmingpoollearning.com/
YouTube Video Index — A list of all of my videos: https://poolmandave.blogspot.com/2014/03/swimming-pool-tips-reviews-how-to-video.html
I spent about lots of hours researching and talking to two manufacturers of Sand Filters — Pentair and Hayward, plus I checked out various forums online to make this comprehensive video. It is part one of a three part series I am posting on Sand Filters.
I think I have covered most of the basic problems and tips in this first video. There is great debate (besides the manufacturer recommendations of course) of when to change the sand in the filter and even if the sand has to be changed. I know I was taught many years ago that the sand never needs to be changed in a sand filter and many Professionals and Sand Filter owners agree with that premise.
The manufacturer disagrees and is a staunch supporter or changing out the sand every 4-5 years. For every problem I presented from channeling to lack of filtering efficiency their answer was to change the sand. I mentioned the method of poking the sand with a running garden hose and the manufacturer said that that wouldn’t work. Nor was sticking a hose in the open top of the filter and letting it run for 10-15 minutes necessary as they say that backwashing is sufficient. But I found many Sand Filter owners who did these two tricks successfully and got their filters running much better. The one in the video seemed to do better after I did the process on it — I noticed that the suction increased dramatically (I only did a light rinse with the hose and poked the sand for a minute or two as to not damage the customer’s filter). You need to use caution if you are going to stick the hose into the sand — make sure the water is on low and that you don’t go down to the laterals which are very fragile.
Adding Diatomaceous Earth (D.E.) to the filter to help with the filtration is another trick that I heard of -actually from one of my Subscribers –Dino and after some research I tried it on a sand filter and it seemed to work. I also use D.E. to test for leaks in the Laterals of the filter — you can also throw some dirt into the skimmer and see if it comes back into the pool. Of course if you see sand in the pool then there probably is a broken or damaged Lateral — the manufacturer also says that if you see sand it could be from it being ground down due to age or a motor that is too powerful for the filter — 2 HP is not recommended by them as it has been shown to grind the sand down.
Many people on the forums recommend a Filter Cleaner that you can add every year to also help clean out the grease and other contaminants that don’t backwash out well.
If you have any more tips and would like to share them with other sand Filter owners please post a comment and I will approve it and publish it.
Related Videos:
Pool Sand Filter Tips, Tricks & Troubleshooting, Sand Filter Part 1: https://youtu.be/4yXD5O6_1-8
Sand Filter Multiport Valve Troubleshooting, Sand Filter Part 2: https://youtu.be/lXTuw8ODJbU
Air in Your Sand Filter, Sand Filter Part 3: https://youtu.be/QM2PmKq5hYk
Vacuuming Your Sand Filter in Waste Mode, Sand Filter Part 4: https://youtu.be/0vG3Bz3tLM8
How To Use A Filter Cleaner in a Sand Filter, Sand Filter Part 5: https://youtu.be/2wfjltY1Sd0
Hayward Mutliport backwash valve troubleshooting: https://youtu.be/3f6v7IbzjUU
Backwashing a Sand Filter: https://youtu.be/yA4HcOEOi5I
For the “Sand Filter” Playlist on mt Channel: https://www.youtube.com/playlist?list=PLsvsTjbpoT-fsboObxkKbG5qSV-bViuBX
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KRON 4′s Justine Waldman reports