MAXIMUM OPERATING PRESSURES FOR PIPE & FITTINGS
AT 75°F
IMPORTANT NOTES:
All values are based on water service.
For more severe service conditions, an additional correction
factor may be required.
Plastic pipe and fittings are not recommended
for air or compressed gas service.
MAXIMUM OPERATING PRESSURE (PSI) AT
75°F
NOMINAL
PIPE SIZE
SCHEDULE 40
PVC & CPVC
SCHEDULE 80
PVC & CPVC
SCHEDULE 80
POLYPROPYLENE
SCHEDULE 80
PVDF
Socket
End
Socket
End
Threaded
End
Thermo-Seal
Joint**
Thermo-Seal Joint
Threaded
End
1/2"
600
850
420
410
580
290
3/4"
480
690
340
330
470
235
1"
450
630
320
310
430
215
1-1/4"
370
520
260
—
—
—
1-1/2"
330
471
240
230
320
160
2"
280
400
200
200
275
135
2-1/2"
300
425
210**
185
—
—
3"
260
375
190**
185
—
—
4"
220
324
160**
160
—
—
6"
180
280
N.R.
N.R.
—
—
8"
160
250
N.R.
—
—
—
10"
140
230
N.R.
—
—
—
12"
130
230
N.R.
—
—
—
* Threaded Polypropylene
is not recommended for pressure service.
** For threaded and backwelded joints.
N.R. Not Recommended. Plastic pipe and fittings are not recommended for air
or compressed gas service.
