Preface
This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of natural gas operated diaphragm pumps. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on natural gas operated diaphragm pumps designed for the utilization of gas. There are risks of injury to persons inherent in some appliances that, if completely eliminated, would defeat the utility of the appliance. The provisions in this Standard are intended to reduce such risks while retaining the normal function of the appliance.
Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of natural gas operated diaphragm pumps, the construction and performance of which may exceed the various provisions specified herein. In its preparation, full recognition has been given to possibilities of improvement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded to CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131. A proposal form is provided in the back of this document.
Safe and satisfactory operation of natural gas operated diaphragm pumps depends to a great extent upon its proper installation, and it should be installed in accordance with the manufacturers’ installation instructions, and local municipal building codes.
Users of this American National Standard are advised that the devices/products/activities within its scope may be subject to regulation at the Federal, state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard, the Federal, state or local regulation should be followed.
Scope
1.1.1
This Standard applies to natural gas operated diaphragm pumps, herein after referred to as pumps, which are constructed entirely of new, unused parts and materials.
1.1.2
This Standard applies to pumps powered by pressurized natural gas, either wellhead or utility grade, pumping process fluids as specified by the manufacturer. (See Part IV, Definitions.)
1.1.3
This Standard applies to pumps with a maximum rated operating gas pressure not exceeding 150 psi (10.342 Bar).
1.1.4
Pumps complying with the provisions of this Standard shall be considered as having an operating ambient temperature range of 32°F (0°C) to 125°F (51.5°C), unless a lower minimum allowable ambient temperature, or a higher maximum allowable ambient temperature, or both, are specified by the manufacturer, (see 2.1.2).
1.1.5
If a value for measurement as given in this Standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification.
1.1.6
All references to psi(Bar) throughout this Standard are to be considered gauge pressure, unless otherwise specified.
