ASME B40.100 PDF


Must be ASME B compliant. 9. The manufacturer is to provide a 5 year product warranty. Pressure gauges to be Winters P3S Series or approved. Buy ASME B Pressure Gauges and Gauge Attachments (B – ) from SAI Global. Buy ASME B (R) PRESSURE GAUGES AND GAUGE ATTACHMENTS from SAI Global.

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The difference between the two accuracy tests is the effect of proof pressure expressed as a percentage of span. Internal pressure containing parts shall be joined by welding or nicrobrazing. The ring facilitates purging of the process cavity. In addition, the results of previous tests may be deemed invalid, unless the manufacturer can prove to the satisfaction of the purchaser that such test would not be adversely impacted by the corrective action.

1082 Test Gauge

If filler metal is used, it shall have a melting point and composition approximately the same as the base metal.

This housing is exposed to the medium and the material must be compatible with the medium. The standards are vehicles by which the Committee as a body can transmit to users the benefits of their combined knowledge awme experience as regards the proper qsme safe use of b40.10 gauges.

When expressed as a percentage of span, the error shall not exceed the limits in Table 1 for the applicable grade of accuracy. If threaded plastic bottom housings are required, care must be taken to avoid over-tightening the process connection, which could cause failure of the housing after a period of time.

Conti, Dresser Industries J. Cast iron, mild steel or plastic with the exception of the window shall not be used.

Bourdon Tube Pressure Gauge

B-1 SCOPE This Appendix is intended to emphasize those parts of this Standard that are applicable to gauges commonly used on regulators for oxy-fuel gas welding, cutting, and allied processes and to provide specific considerations for gauge dial printing marking and gauge installation.


The sample shall then be inclined 60 deg to the right, left, front, and back. Table C-3 shows the ranges and range designators for general purpose compound pressure gauges. Joints aske be welded for all ranges.

ASME B Archives – Impact Industrial Sales

Combined effect of stress and corrosive ambient environments should be considered. Common process connections are described in paras. The user should h40.100 the gauge supplier of the installation conditions so that the appropriate element materials can be selected. A snubber restrictor may reduce the magnitude of the pressure transmitted to the elastic element.

The date of the last test may be noted on the front of the gauge.

For instance, the outside diameter of a size 21? A pressure limiter valve is a device that is designed to close on rising pressure, limiting the pressure at the outlet of the device. Gauges shall incorporate a maximum stop see para. I’ll venture a comment in the absence of any other over 2 months. Materials readily susceptible to sea water corrosion damage for example, brass, aluminum, beryllium copper, mild steel shall not be used for threaded fasteners or washers. International Nickel Company, Inc.

The diaphragm may be made in the form of a capsule threaded into the upper housing see Figs.

If the temperature condition is stable and a more accurate indication is required, recalibration may be appropriate. Normal mounting of the gauge shall not prevent xsme functioning of the pressure relief means. This loading could cause cracks in the element itself, or in joints.

A corrosive medium may dictate use of an element material having less than optimum properties. A resonance may wsme in an internal part of the gauge, with no outward manifestation. The range of the standard must be not less than that of the gauge under test but may be higher, as long as the errors do not exceed 0.


Major and intermediate graduation lines shall be emphasized. For what it’s worth. This Standard is aeme only. The gauge shall then be allowed to stabilize at room temperature and then be checked for accuracy, in accordance with para. These seals mount on pipe flanges and extend through insulation to the tank wall. The pointer shall rotate clockwise for increasing positive pressure and counterclockwise for increasing negative pressure. Before conducting the accuracy test, subject the gauge to a pressure equal to the maximum indicated pressure or vacuum.

Heat due to adiabatic compression can cause ignition. They may, however, also reduce accuracy or sensitivity, or both. The user should obtain expert advice from a qualified source for selection of materials.

In addition, consideration should be given to environmental effects such as corrosion of the external portions of the diaphragm seal. A snubber restrictor placed in the gauge pressure inlet will reduce pressure surges and fluid flow from the partially open elastic element.

Diaphragm capsule elements may have one or more capsules to provide appropriate displacement see B40.10. These test methods may or may not satisfy the requirements of the intended application. When the valves are positioned as shown in Fig. A temperature of In applications of stem-mounted gauges, especially with liquid-filled cases and where vibration is severe, consideration should be given to the possibility of failure of the stem as,e associated piping caused by the vibrating mass of the gauge.