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#201
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Is there a pool pump fitting adapter to stop this incessant leak?
On Tue, 18 Jun 2013 21:21:16 -0400, Tekkie®
wrote: Here's a pic of the final result of the plumbing & electrical fixes: http://www5.picturepush.com/photo/a/...g/13343543.jpg Won't the sunlight attack the white PVC piping? No. Not really. Danny can paint the pipe. It helps to reduce UV damage (long term). It would take years for severe damage (in the desert). Krylon plastic paint is a good choice. He does need to paint the PVC he replaced. His old pipe is already painted. HD has the Krylon plastic paint in spray cans. |
#202
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Is there a pool pump fitting adapter to stop this incessantleak?
On Tue, 18 Jun 2013 21:21:16 -0400, Tekkie® wrote:
Here's a pic of the final result of the plumbing & electrical fixes: http://www5.picturepush.com/photo/a/...g/13343543.jpg Won't the sunlight attack the white PVC piping? I googled that and found that you are wholly correct! Mostly PVC impact strength is negatively affected by sunlight. (And sunlight is one thing I get in spades where I live!) I need to protect the PVC with a water-based acrylic/latex exterior black paint. UniBell FAQ on Studies of PVC Pipe Performance Over Time: http://www.plasticengineeredproducts...nibell/faq.htm The Effects of Sunlight Exposure on PVC Pipe: http://www.nacopvc.com/c/technical-i...re-on-pvc-pipe Painting of PVC Piping for Ultraviolet Protection: http://www.lascofittings.com/support...gPVCPiping.asp How to Use Acrylic or Latex Paint on PVC: http://homeguides.sfgate.com/use-acr...pvc-25511.html Q: What effect does ultraviolet exposure have on PVC pipe? A: In order to accurately quantify the effects of UV radiation on PVC pipe, Uni-Bell members conducted a two-year study in the late 1970s at various outdoor locations in the United States and Canada. In this study, PVC pipe samples were placed on horizontal exposure racks and placed so that they received continual exposure to the sun. At various points throughout the study, tests to evaluate mechanical properties were performed on the portion of the pipes that received the maximum UV exposure. The results of the study (published as UNI-TR-5, "The Effects of Ultraviolet Aging on PVC Pipe") indicate a gradual decline in the pipe's impact strength. The lowest impact strength recorded after two years of exposure was 158 ft-lbf, or 75% of the original ASTM value. Even this reduced value exceeds those of most alternative sewer pipe products. These results indicate that no unusual handling problems should be expected from PVC pipe even after long-term exposure to sunlight. The study results also show that Modulus of Elasticity and Tensile Strength were virtually unaffected. The fact that these properties are unaffected signifies that structural integrity and pressure capacity remain unchanged. UV degradation does not continue after installation when exposure to UV radiation is terminated. The presence of an opaque surface between the sun and the pipe prevents UV degradation, since UV radiation will not penetrate thin shields such as paint coatings or wrappings. Burial provides complete protection. When exposure in excess of two years of direct sunlight is unavoidable, PVC pipe should be covered with an opaque material while permitting adequate air circulation around the pipe. This prevents excessive heat accumulation. |
#203
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Is there a pool pump fitting adapter to stop this incessantleak?
On Tue, 18 Jun 2013 19:12:20 -0700, Oren wrote:
Krylon plastic paint is a good choice. He does need to paint the PVC he replaced. His old pipe is already painted. This is good advice. The FAQs say never to use petroleum based paints, and only to use Acrylic or Latex (water based) paints. From the Krylon FAQ: http://www.krylon.com/how-to/faqs/ Q: Can I spray paint vinyl? A: Yes, you can spray paint vinyl surfaces with Krylon® Fusion for Plastic® spray paint, which exclusively bonds to hard, rigid, non-flexing surfaces such as vinyl, plastic, PVC and resin. Krylon Fusion for Plastic dries in 15 minutes or less and requires no sanding or priming, making it easy to refresh your vinyl project surfaces. |
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