# Automatic shutoff valves.

**Citation:** 49 CFR 193.2125  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1999-10-01  
**Published:** Not stated

Each automatic shutoff valve or combination of valves must:

(a) Have a fail-safe design;

(b) Operate to stop fluid flow which would endanger the operational integrity of plant equipment; and

(c) Close at a rate to avoid fluid hammer which would endanger the operating integrity of a component.

## Document text

Each automatic shutoff valve or combination of valves must:

(a) Have a fail-safe design;

(b) Operate to stop fluid flow which would endanger the operational integrity of plant equipment; and

(c) Close at a rate to avoid fluid hammer which would endanger the operating integrity of a component.

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2125>
- Source ID: `govinfo-cfr`
- SHA-256: `45765b0d8536383cb62db7c881c2e8edab53856a5ce186abf5a05a51b90b4fce`
- Retrieved: 2026-08-12T01:41:23.231Z
- Exported: 2026-08-22T21:25:48.889Z
- Document slug: `49-cfr-193-2125`

### Source metadata

```json
{
  "part": "193",
  "section": "193.2125",
  "subpart": "Subpart C—Design",
  "annualEdition": 1999,
  "revisedAsOf": "1999-10-01",
  "govInfoPackage": "CFR-1999-title49-vol3",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```