# 255.191 Design pressure of plastic fittings.

- **operation:** document
- **citation:** 16 NYCRR 255.191
- **title:** 255.191 Design pressure of plastic fittings.
- **source type:** regulation
- **agency:** New York State Public Service Commission
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** Not available
- **summary:** Transmission and Distribution of Gas. (a) The design pressure of polyvinyl chloride (PVC) Schedules-40 and 80 thermoplastic fittings must be obtained from the following table:

PVC Type II Class Location
Size inches | Schedule | 1 | 2 & 3 | 4 | 1 | 2 & 3 | 4
½ | 40 | 100 | 100 | 100 | 100 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
¾ | 40 | 100 | 100 | 96 | 100 | 100 | 100
80 | 100 | 100 
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**body:**

(a) The design pressure of polyvinyl chloride (PVC) Schedules-40 and 80 thermoplastic fittings must be obtained from the following table:

PVC Type II Class Location
Size inches | Schedule | 1 | 2 & 3 | 4 | 1 | 2 & 3 | 4
½ | 40 | 100 | 100 | 100 | 100 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
¾ | 40 | 100 | 100 | 96 | 100 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
1 | 40 | 100 | 100 | 90 | 90 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
1¼ | 40 | 100 | 92 | 74 | 100 | 100 | 100
80 | 100 | 100 | 100 | 100 | 100 | 100
1½ | 40 | 100 | 83 | 86 | 100 | 100 | 100
80 | 100 | 100 | 94 | 100 | 100 | 100
2 | 40 | 89 | 69 | 55 | 100 | 100 | 100
80 | 100 | 100 | 81 | 100 | 100 | 100
2½ | 40 | 99 | 76 | 61 | 100 | 100 | 100
80 | 100 | 100 | 85 | 100 | 100 | 100
3 | 40 | 84 | 66 | 53 | 100 | 100 | 100
80 | 100 | 94 | 75 | 100 | 100 | 100
3½ | 40 | 77 | 60 | 48 | 100 | 100 | 96
80 | 100 | 86 | 69 | 100 | 100 | 100
4 | 40 | 71 | 56 | 44 | 100 | 100 | 89
80 | 100 | 81 | 65 | 100 | 100 | 100
5 | 40 | 82 | 49 | 39 | 100 | 97 | 78
80 | 93 | 72 | 58 | 100 | 100 | 100
6 | 40 | 56 | 44 | 35 | 100 | 88 | 71
80 | 89 | 70 | 56 | 100 | 100 | 100

These pressure ratings are the same value as the design pressure of the corresponding pipe size and schedule in the same class location, as determined by the formula given in section 255.121 of this Part.
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