Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-30-2007, 10:50 AM   #1
I have gas!
 
Clutchcargo's Avatar
 
Join Date: Mar 2007
Location: Massachusetts
Posts: 1,783
Rewards Points: 1,018
Default

Adjusting for Elbows in Gas Line


Do you need to adjust for elbows for when determining the gas line size?
If so, what is the adjustment factor (ie 4 feet for 90 degree elbow, etc.)
TIA

__________________
I tear things down and build them up.
Clutchcargo is offline   Reply With Quote
Old 09-30-2007, 01:46 PM   #2
Long-Time DIYer
 
Mike Swearingen's Avatar
 
Join Date: Mar 2005
Location: On Albemarle Sound In Northeastern NC
Posts: 1,460
Rewards Points: 500
Default

Adjusting for Elbows in Gas Line


I've heard of adjusting for elbows on vent lines, such as for a clothes dryer, but I do not know of any reason to do so on a gas line. The pressure is maintained in gas pipes by the gas flow, no matter what the configuation.
Mike

Mike Swearingen is offline   Reply With Quote
Old 09-30-2007, 02:30 PM   #3
Member
 
Join Date: Apr 2007
Location: Downeast Maine
Posts: 999
Rewards Points: 500
Default

Adjusting for Elbows in Gas Line


(As I'm sure Clutchcargo knows ) In any pressurized system there are friction losses which increase with length of pipe, number of bends, speed of flow, and as diameter decreases.

I have no idea if those friction losses are enough to require that you account for them in gas plumbing, just saying that they definitely are a factor in pressurized systems, Mike. The pressure of gas flowing through a pipe will be less near the outlet than at the inlet.
NateHanson is offline   Reply With Quote
Old 10-01-2007, 02:05 PM   #4
I have gas!
 
Clutchcargo's Avatar
 
Join Date: Mar 2007
Location: Massachusetts
Posts: 1,783
Rewards Points: 1,018
Default

Adjusting for Elbows in Gas Line


Found it. The equivalent length for these pipe sizes are:

90 Elbows:
3/4" = 1'
1" = 2'

Tee (run):
3/4" = 0.5'
1" = 0.75'

Tee (Branch):
3/4" = 2.5'
1" = 3.5'

Gas Cock:
3/4" = 4'
1" = 5'
__________________
I tear things down and build them up.
Clutchcargo is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ac suction line placement? nimbenja HVAC 8 10-28-2009 06:43 AM
Condensate Line schott HVAC 17 06-02-2008 04:16 PM
power line noise sciguy125 Electrical 5 12-02-2007 02:39 PM
how to run fridge water line under kitchen floor? travishume Plumbing 23 09-26-2006 08:51 AM
Installing exterior faucet to washer line? skellies Plumbing 3 06-18-2006 09:19 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.