---
kind: "section"
citation: "42 C.F.R. § 84.93"
title: "42"
number: "84.93"
heading: "Gas flow test; open-circuit apparatus."
url: "https://uscodex.org/cfr/42/84.93"
---

# §84.93. Gas flow test; open-circuit apparatus.

- (a) A static-flow test will be performed on all open-circuit apparatus.
- (b) The flow from the apparatus shall be greater than 200 liters per minute when the pressure in the facepiece of demand-apparatus is lowered by 51 mm. (2 inches) water-column height when full container pressure is applied.
- (c) Where pressure demand apparatus are tested, the flow will be measured at zero gage pressure in the facepiece.
- (d) Where apparatus with compressed-breathing-gas containers are tested, the flow test shall also be made with 3,450 kN/m. 2 (500 p.s.i.g.) container pressure applied.

## Notes

### Authority

Authority: 29 U.S.C. 651 et seq.; 30 U.S.C. 3, 5, 7, 811, 842(h), 844.

### Source

Source: 60 FR 30355, June 8, 1995, unless otherwise noted.