46 CFR 64.65
§ 64.65 Vacuum relief device.
United States · 46 CFR — Shipping · Status: effective
Cite this
- Citation
- 46 CFR 64.65, § 64.65 Vacuum relief device, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/225444
- Permanent ID
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Full text
(a) Each MPT that is designed for an external pressure of less than 7.5 psig must have a vacuum relief device.
(b) A vacuum relief device for an MPT must—
(1) Open at an external pressure of not less than 3 psig; and
(2) Have an opening with a cross-section of 0.44 square inch or more.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.