Table 2. MAXIMUM SPAN FOR PIPE HANGERS (mm)

TABLE 2

MAXIMUM SPAN FOR PIPE HANGERS (mm)

Copper tube, Type K (Cu-K) and Type L (Cu-L); PVC Schedule 40 and 80 (PVC);

brass and stainless steel (SS)

Pipe Size

Cu-K and Brass

Cu-L

PVC

SS

(mm)

100

2740

2660

1900

3500

125

3040

2890

---

3800

150

3270

3200

2050

4190

TABLE 2

MAXIMUM SPAN FOR PIPE HANGERS (feet)

Copper tube, Type K (Cu-K) and Type L (Cu-L); PVC Schedule 40 and 80 (PVC);

brass and stainless steel (SS)

Pipe Size

Cu-K and Brass

Cu-L

PVC

SS

(inches)

1/2

3'-9"

3'-6"

5'-0"

3/4

4'-3"

3'-6"

5'-9"

1

5'-0"

4'-9"

4'-0"

6'-6"

1 1/2

5'-9"

5'-6"

4'-6"

7'-6"

2

6'-6"

4'-6"

8'-6"

2 1/2

7'-3"

7'-0"

---

9'-3"

3

7'-9"

7'-6"

5'-6"

10'-3"

3 1/2

8'-3"

---

11'-0"

4

9'-0"

8'-9"

6'-3"

11'-6"

5

10'-0"

9'-6"

---

12'-9"

6

10'-9"

10'-6"

6'-9"

13'-9"

3.1.1.4

Exposed Oxygen Piping

Install in wall-mounted sheet steel raceways and junction boxes.

3.1.1.5

Threaded Joints

Coat male threads of fittings used in shut off valves with TFE tape before

assembly.

**************************************************************************

NOTE: Brazed joints exhibit a melting temperature

in excess of 538 degrees C 1000 degrees F to retain

the integrity of the piping system in the event of

fire exposure.

**************************************************************************

3.1.1.6

Brazing and Soldering

Personnel qualification procedures shall conform with AWS B2.2. Metal

preparation and joining procedures shall conform with CDA A4015 and NFPA 99.

Use BCuP Series brazing alloys for joints, except for 50 mm 2 inch and

smaller pipes, in nitrogen and vacuum systems only, solder joints may be

used. Completely clean off excess after brazing and soldering.

SECTION 15217N

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