# -7 Protection of valves and accessories.

**Citation:** 49 CFR 178.255-7  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) All valves, fittings, accessories, safety devices, gauging devices, and the like shall be adequately protected against mechanical damage by a housing closed with a cover plate.

(b) Protective housing shall comply with the requirements under which the tanks are fabricated with respect to design 

## Document text

(a) All valves, fittings, accessories, safety devices, gauging devices, and the like shall be adequately protected against mechanical damage by a housing closed with a cover plate.

(b) Protective housing shall comply with the requirements under which the tanks are fabricated with respect to design and construction, and shall be designed with a minimum factor of safety of four to withstand loadings in any direction equal to two times the weight of the tank and attachments when filled with water.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-178.255-7>
- Source ID: `ecfr`
- SHA-256: `a426ba41ebee09b6183010ca7a91194415bcf20305a6bd8b214ce492a46aa076`
- Retrieved: 2026-08-20T05:46:20.151Z
- Exported: 2026-08-22T11:56:36.176Z
- Document slug: `49-cfr-178-255-7`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "178",
  "section": "178.255-7",
  "subpart": "Subpart H—Specifications for Portable Tanks",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```