03:36PM | 11/17/04
Member Since: 11/07/04
83 lifetime posts
Can someone explain the difference between MAPP gas and propane? Can either one be used for soldering copper pipe? Thanks.


08:01PM | 11/17/04
Member Since: 07/01/03
555 lifetime posts
MAPP gas burns hotter. I use it for soldering all the time. It works faster and seems cleaner to me. No real difference in technique except it takes less time to heat the joint. The MAPP (methylacetylene-propadiene 44% and propane 56%) sold in small cylinders contains a substantial percentage of propane. The above ratio is from Bernz-O-Matic. MSDS here:

Jim D

11:46PM | 11/17/04
Member Since: 01/06/01
345 lifetime posts
Timbear - hi, TomH is right - MAPP burns hotter. I was trying to repair a hose bibb at my mother-in-law's house before and was using regular propane to heat the connection (copper pipe to hose bibb end). Propane wouldn't quite get things hot enough to allow the solder to melt/seal properly (the capillary action never happened). A neighbor who was a retired plumber told her I needed to use MAPP gas. I got some and voila! - the joint was fixed in under a minute.

I've used regular propane before when dealing with copper-to-copper connections. However, since the hose bibb thing (2 years ago) I only use MAPP gas for my plumbing's faster because it burns hotter. One caution I've read elsewhere is you need to use a soldering/brazing torch tip made for MAPP gas if you need to burn the torch for extended periods - otherwise, a standard propane tip may begin to melt. I haven't experienced it myself - I just read the caution elsewhere.

I hope this helps some - regards! Jim D/West Point, VA


01:17AM | 11/18/04
Member Since: 11/07/04
83 lifetime posts
Tom and Jim,

Thanks so much! That will save me some trouble I am sure!


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... Even earthbound, this stunning, colorful egg chair would be an eye-catching accent for any room. Suspended off the ground,... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Chalkboard labels are available for sale. You can also apply chalkboard paint to pretty much any surface to create your ow... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon