---
kind: "section"
citation: "46 C.F.R. § 56.20-1"
title: "46"
number: "56.20-1"
heading: "General."
url: "https://uscodex.org/cfr/46/56.20-1"
---

# §56.20-1. General.

- (a) Valves certified in accordance with [subpart 50.25](/cfr/46/subpart50.25.md) of this subchapter are acceptable for use in piping systems.
- (b) Non-welded valves complying with the standards listed in [§ 56.60-1](/cfr/46/56.60-1.md) may be used within the specified pressure and temperature ratings of those standards, provided the limitations of [§ 56.07-10(c)](/cfr/46/56.07-10.md?p=c) are applied. Materials must comply with [subpart 56.60](/cfr/46/subpart56.60.md). Welded valves complying with the standards and specifications listed in [§ 56.60-1](/cfr/46/56.60-1.md) may be used in Class II systems only unless they meet [paragraph (c)](#c) of this section.
- (c) All other valves must meet the following:
  - (1) All materials must be accepted in accordance with [§ 56.60-1](/cfr/46/56.60-1.md).
  - (2) The maximum allowable working pressure may be determined by [§ 56.15-1(c)(2)](/cfr/46/56.15-1.md?p=c-2).
  - (3) Valves must be tested in accordance with the requirements of the applicable incorporated standard or [subpart 56.97](/cfr/46/subpart56.97.md).
  - (4) If welded, valves must be welded in accordance with [subpart 56.70](/cfr/46/subpart56.70.md) and [part 57](/cfr/46/part57.md) of this subchapter or by other processes specifically approved by the Marine Safety Center.

## Notes

### Amendments

[CGD 77-140, 54 FR 40604, Oct. 2, 1989; 55 FR 39968, Oct. 1, 1990; USCG-2003-16630, 73 FR 65176, Oct. 31, 2008]

### Source

Source: CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by USCG-2020-0634, 89 FR 50131, June 12, 2024, unless otherwise noted.

### Authority

Authority: 33 U.S.C. 1321(j), 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGFR 68-82, 33 FR 18843, Dec. 18, 1968, unless otherwise noted.

### Amendments

[CGD 77-140, 54 FR 40604, Oct. 2, 1989; 55 FR 39968, Oct. 1, 1990; USCG-2003-16630, 73 FR 65176, Oct. 31, 2008]