# 255.145 Valves. **Citation:** 16 NYCRR 255.145 **Type / status:** regulation / current **Agency:** New York State Public Service Commission **Effective:** Not stated **Published:** Not stated Transmission and Distribution of Gas. (a) Except for cast iron and plastic valves, each valve must meet the minimum requirements, or the equivalent, of ANSI/API 6D (as described in section 10.3 of this Title). A valve may not be used under operating conditions that exceed the applicable pressure-temperature ratings contained in those standards. (b) Each cast iron and plastic valve must comply w ## Document text (a) Except for cast iron and plastic valves, each valve must meet the minimum requirements, or the equivalent, of ANSI/API 6D (as described in section 10.3 of this Title). A valve may not be used under operating conditions that exceed the applicable pressure-temperature ratings contained in those standards. (b) Each cast iron and plastic valve must comply with the following: (1) The valve must have a maximum service pressure rating for temperatures that equal or exceed the maximum service temperature. (2) The valve must be tested as part of the manufacturing, as follows: (i) With the valve in the fully open position, the shell must be tested with no leakage to a pressure at least 1.5 times the maximum service rating. (ii) After the shell test, the seat must be tested to a pressure not less than 1.5 times the maximum service pressure rating. Except for swing check valves, test pressure during the seat test must be applied successively on each side of the closed valve with the opposite side open. No visible leakage is permitted. (iii) After the last pressure test is completed, the valve must be operated through its full travel to demonstrate freedom from interference. (c) Each valve must be able to meet the anticipated operating conditions. (d) No valve having shell (body, bonnet, cover, and/or end flange) components made of ductile iron may be used at pressures exceeding 80 percent of the pressure ratings for comparable steel valves at their listed temperature. However, a valve having shell components made of ductile iron may be used at pressures up to 80 percent of the pressure ratings for comparable steel valves at their listed temperature, if: (1) the temperature-adjusted service pressure does not exceed 1,000 psig (6.9 MPa); and (2) welding is not used on any ductile iron component in the fabrication of the valve shells or their assembly. (e) No valve having shell (body, bonnet, cover, and/or end flange) components made of cast iron, malleable iron, or ductile iron may be used in the gas pipe components of compressor stations. (f) Except for excess flow valves, plastic valves installed after January 22, 2019 must meet the minimum requirements of a listed specification. A valve may not be used under operating conditions that exceed the applicable pressure and temperature ratings contained in the listed specification. ## Provenance - Official: Yes - Source: - Source ID: `ny-dps-nycrr` - SHA-256: `2aa0ce6a9a146215c54bc0ad225e43f0697549c24344e7d4a63a5443380edff5` - Retrieved: 2026-08-12T06:20:40.894Z - Exported: 2026-08-25T04:00:07.121Z - Document slug: `ny-nycrr-255-145` ### Source metadata ```json { "jurisdiction": "US-NY", "title": 16, "part": "255", "partTitle": "Transmission and Distribution of Gas", "scopeKind": "gas-pipeline-safety", "tocPath": [ "Part 255 Transmission and Distribution of Gas", "Design of Pipeline Components" ], "legalScope": "Complete current terminal legal unit exposed by the DPS-designated Title 16 NYCRR pipeline-safety part inventory.", "applicabilityCaveat": "Applicability depends on the part and section, Commission jurisdiction, commodity and facility type, intrastate or interstate status, operator and activity, exemptions, waivers, federal preemption, Commission orders, and incorporated law. DPS inspects portions of interstate systems for PHMSA, but PHMSA retains federal enforcement authority. DPS states that all jurisdictional Part 256 gas-holder and Part 257 LPG-plant facilities have been decommissioned even though those regulations remain unrepealed.", "incorporationCaveat": "These parts incorporate or rely on federal pipeline regulations, federal and New York statutes, Commission rules and orders, and privately authored technical standards. Part 10 supplies incorporation details. References metadata preserves explicit citations but does not reproduce external material, determine licensing rights, or decide whether a particular incorporation is static or dynamic.", "publicationCaveat": "The New York Department of Public Service identifies these eleven Title 16 NYCRR parts as its state pipeline-safety regulations and links to the public DOS/Westlaw NYCRR reading copy. That site labels the online text unofficial and directs users needing evidentiary accuracy to the Official NYCRR maintained by the Department of State Division of Administrative Rules. Each section's 'Current through' date is the most recent official NYCRR supplement covering that section, not a uniform corpus-wide amendment date.", "rights": "New York government-edict text is preserved with DPS, Department of State, and publisher attribution. The public reading site's presentation and enhancements, agency marks, forms, annotations, and incorporated federal or privately authored standards require separate rights review; this connector does not claim rights in those materials.", "rightsReviewRequired": true, "currentThrough": "2024-05-31", "historyEvents": "No event is emitted because the section reading copy does not supply an explicit adoption, filing, or effective-date history.", "publisherCitation": "16 CRR-NY 255.145", "identityAnomaly": null, "references": [ { "citation": "16 NYCRR 10.3", "referenceType": "new-york-administrative-code", "url": "https://govt.westlaw.com/nycrr/Document/I50525ddbcd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)" } ], "region": "NY" } ```