March 19, 2025 - Working pressure of copper tubes type K, L and M are indicated in the table below.

Rated Internal Working Pressures for Copper Tube Types K, L, M and DWV

Calculated Rated Internal Working Pressures for Copper Tube: Type K*

Rated Internal Working Pressures for Copper Tube Types K, L & M · Rated Internal Working Pressure (psi) for Copper Joint Tubes · Note: Ratings up to 8 inches are those given in ANSI Standard B16.22 “Wrought Copper and Bronze Solder-Joint Pressure Fittings” and ANSI B16.18 ·

October 24, 2011 - For comparison, at 100 degrees Fahrenheit, a 3/4-inch type K pipe has a working pressure of 1,466 pounds per square inch, type L 1,002 pounds per square inch and type M 701 pounds per square inch.

November 10, 2025 - DWV grade has the lowest wall-thickness to pipe diameter ratio, and should only be used for drain and vent lines with very low water pressure. Type M: A rigid pipe used for branch supply lines. It's less expensive than thicker grades of copper and is the most popular choice when codes allow for its use. Type L: Has extra thickness, giving it the strength needed for natural gas lines and exposed above-ground outdoor locations, such as swimming pool or spa pipes. It's also used to repair and replace indoor water supply systems when local codes have limitations on Type M. Type K: Can technically be used for all of the same projects as types M and L, and has the largest wall-thickness to pipe diameter ratio.

February 4, 2020 - It is suitable only for above-ground applications and has a low-pressure rating of 10 to 15 pounds per square inch (psi), much lower than the water pressure of most municipal water supply systems.

For example, the OD of 1/2" CTS pipe would be 5/8" and for 1" CTS pipe would be 1-1/8". ID - Inside Diameter Wall Thickness - denotes the thickness of the pipe wall. The main difference between L, M and K type copper pipes are their wall thickness. PSI @ 150F - pressure rating is commonly expressed ...

In Tables 14.3a-d, the calculated rated internal working pressures based on the ASME (Boardman) equation are shown for both annealed (soft) and drawn (hard) Types K, L, M and DWV copper tube for service temperatures from 100°F to 400°F. The ratings for drawn tube can be used for soldered systems and systems using properly designed mechanical joints.

For a clearer understanding of Type M copper vs type K vs L, read this guide on Asteria Copper Industries. Type K copper pipe is defined as the thickest and most pressure-resistant copper pipe grade in the ASTM B88 standard, and its international market price generally ranges from USD 6 to ...

July 28, 2020 - It also has thinner walls than ... for DWV. The thin walls on DWV copper pipe can only withstand a maximum pressure rating of 15 psi, hence the narrow range of use....

The thicker the wall thickness, the harder the pipe and the greater the pressure rating. The smaller the pipe diameter the greater the pressure rating. As two extreme examples, Type K drawn tube ¾ inch in diameter has a rating of 1,278 psi.

August 27, 2025 - It also has thinner walls than ... for DWV. The thin walls on DWV copper pipe can only withstand a maximum pressure rating of 15 psi, hence the narrow range of use....

View information about how to measure threaded and unthreaded pipe and pipe fittings. ... This Type K tubing has the thickest walls of all our copper tubing for drinking water. It withstands pressures up to 1,900 psi.

2f: Medical Gas, K and L..................................................................................................................24 · TABLE 3. Rated Internal Working Pressure for Copper Tube: 3a. Type K..........................................................................................................................................25

It includes specifications for outside diameter, wall thickness, inner diameter, and maximum allowable pressure at 150°F. The pressure ratings are calculated using a formula from ANSI standards based on allowable stress that varies depending ...

Copper Pipe Types and Colours · Copper Tube Type K Dimensions · Page | 2 · www.jugaltube.com · [email protected] · Nominal · Size · inches · ID · OD · Wall · Thickness · (based on nominal dimensions) Calculated Values · Tube Weight · Only, pounds/linear ·

Technical Information related to materials and finishes used on Taylor Pipe Supports products, as well as industry standard design properties of pipe.

The thickness of the copper pipe also determines its price, pressure rating, and durability, among other things. Type K, L, and M are most commonly used to distribute water, while the DWV copper pipe is mostly used for waste management.