SCOPE

1.1 This Standard Practice applies to small valves and manifold valves developed for and predominantly used in instrument, control and sampling piping systems. It covers steel and alloy valves of nominal pipe size (NPS) 2 and smaller, and pressure ratings of 15,000 psi (103.4 MPa) and lower at 100° F (38° C). See MSS SP-105 for instrument valves involving code applications.

1.2 This Standard Practice applies to instrument valve designs including, but not limited to, needle valves, packless valves, ball valves, plug valves, check valves and manifold valves. Instrument valves are generally of proprietary design. This Standard Practice is not intended to define or limit designs, construction, performance, envelope dimensions, or valve types.

1.3 The application of valve type, size, rating, materials of construction, and suitability for the service is the responsibility of the purchaser and is outside the scope of this Standard Practice.

1.4 The manufacturer shall provide pressure ratings for temperatures above 100° F (38° C). This temperature is the temperature of the pressure-containing shell of the component. In general, this temperature is the same as that of the contained fluid. Use of a pressure rating corresponding to a temperature other than that of the contained fluid is the responsibility of the user, subject to the requirements of applicable codes and regulations.

MSS SP-98-2020 covers the material, application, and performance requirements for liquid or powder interior coatings for valves, hydrants, and fittings. In addition, this Standard Practice covers equipment used to conduct holiday tests on coatings.

These coatings are applied to interior ferrous surfaces of valves, hydrants, and fittings intended for use in water, drinking water, or reclaimed and wastewater systems where corrosion protection is specified.
Where it is necessary, because of the application process or purchase requirements, the coating may also be specified for exterior use, with recognition that performance parameters may vary from those specified for interior use because of differences in exposure conditions.

This Standard Practice does not cover the following:

Special coatings agreed to by the purchaser and the manufacturer.

Coatings for special service conditions such as salt water, acid, high temperature, etc.

Internal areas of fire hydrants that are downstream of the main valve.

Scope: This Standard Practice covers the material, application, and performance requirements for liquid or powder interior coatings for valves, hydrants, and fittings. In addition, this Standard Practice covers equipment used to conduct holiday tests on coatings.

These coatings are applied to interior ferrous surfaces of valves, hydrants, and fittings intended for use in water, drinking water, or reclaimed and wastewater systems where corrosion protection is specified.

Where it is necessary, because of the application process or purchase requirements, the coating may also be specified for exterior use, with recognition that performance parameters may vary from those specified for interior use because of differences in exposure conditions.

This Standard Practice does not cover the following:
1) Special coatings agreed to by the purchaser and the manufacturer.
2) Coatings for special service conditions such as salt water, acid, high temperature, etc.
3) Internal areas of fire hydrants that are downstream of the main valve.

MSS SP-97-2019 includes essential dimensions, finish, tolerances, testing, marking, material, and minimum strength requirements for 90° and 45° integrally reinforced forged branch outlet fittings of buttwelding, socket welding, and threaded types.

Unless specified otherwise by the manufacturer, conventional integrally reinforced forged branch outlet fittings are intended for the following header by branch combinations: STD × STD, XS × XS, SCH. 160 × SCH 160, XXS × XXS, XS × 3000, SCH 160 × 6000, and XXS × 9000. When the run and branch pipes are of differing or mixed schedules, then the selection of the branch connection shall be determined by contacting the manufacturer. Such selections shall be agreed upon by purchaser and manufacturer at time of order and may involve supplemental marking requirements determined by other standards (e.g., material grade determination, other factors). See Section 1.3. Mixed schedule branch outlet fittings are unique to the design of each system, and thus outside the scope of this Standard Practice. The adequacy of the design for light, intermediate, and heavy wall branch outlet fittings may be established by mathematical analysis as contained in the applicable pressure vessel or piping codes, or by finite element analysis.

Fittings manufactured to this Standard Practice are designed to make a fully reinforced branch connection in accordance with applicable piping code requirements, when attached, at an opening in a run pipe by means of a full penetration weld.

Fittings, otherwise conforming to this Standard Practice, may be made to special dimensions, size, shape, tolerances, or other dimensional requirements of other wrought material by agreement between the manufacturer and the purchaser. See Section 4.2 (f) for supplemental marking requirements.

Standard Units Tables 2 through 7 show the fitting's dimensional requirements in U.S. customary units or inches (decimal). Tables A2 through A7 show the fitting's dimensional requirements in SI (metric) units (e.g., millimeters). The values stated in either U.S. customary or SI (metric) units are to be regarded separately as the Standard. Within the body text, the SI (metric) units are shown in parenthesis. Combining values from the two systems may result in non-conformance with the Standard Practice. The values stated in each option are not exact equivalents; therefore, each measurement system must be used independently of the other.

MSS SP-95-2018 covers dimensions, finish, tolerances, marking, and material for carbon steel and alloy steel Swaged (a) Nipples (male-end reducing fittings), NPS 1/8 through NPS 12 (DN 6 through DN 300) and Bull Plugs (hollow or solid male closures), NPS 1/8 through NPS 12 (DN 6 through DN 300). These fittings are made with ends that are threaded, beveled, square cut, grooved, or any combination of these. Both concentric and eccentric Swaged Nipples are included.

Partial Compliance Fittings Fittings with special dimensions and fittings made from non-standard materials may be designed and manufactured by agreement between the manufacturer and the purchaser, provided they are marked in accordance with the requirements for partial compliance fittings of Section 4.1(e).

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This Standard Practice lists and defines principle terms and acronyms widely used to describe general purpose valves, fittings, and related components. It is comprised of separate sections which contain:

• Acronyms for organizations whose documents are applicable to valves and fittings, and a brief summary of the
  applicable area of interest as it relates to this subject.
• A glossary of terms used within the valve and fittings industry, including standards developers, to describe design, operation, and performance characteristics.
• Abbreviations commonly used in the valve and fittings industry.

1. SCOPE

1.1 This Standard Practice provides methods and acceptance standards for ultrasonic examination of ferritic and martensitic steel castings for valves, flanges, fittings, and other piping components. It is applicable to examination of repairs as well as to the initial examination of castings.

1.2 The methods of Section 8 describe uniform procedures which will provide satisfactory and consistent results upon which the acceptance standards of Section 11 may be used.

1.3 It is recognized that ultrasonic examination and radiographic examination are not directly comparable. This Standard Practice is intended to provide a casting of functionally equivalent quality to those accepted by the method of MSS SP-54.

1. SCOPE

1.1 This Standard Practice provides methods and acceptance standards for ultrasonic examination of
austenitic, ferritic, and martensitic steel castings and forgings for valves, flanges, fittings, and other piping
components. This Standard Practice is applicable to the initial examination of castings and forgings and
towards the examination of repairs.

1.2 The methods contained in this Standard Practice describe uniform procedures that will provide
satisfactory and consistent results upon which the acceptance standards of Section 11 may be used.

1.3 It is recognized that ultrasonic examination and radiographic examination are not directly comparable.
This Standard Practice is intended to provide a casting or forging of functionally equivalent quality to those
accepted by the method of MSS SP-54.

Standard Practice (SP)-93 has served as an industry norm for over 38 years; providing methods and acceptance standards for liquid penetrant examination of steel castings and forgings for valves, flanges, fittings, and other piping components. This Standard Practice is applicable to examination of repairs as well as to initial examination of castings and forgings. SP-93 continues to be maintained under the consensus of MSS Technical Committee 304, Quality Standards.

MSS SP-9-2018 applies to the spot facing for U.S. customary (inch-series) bolting of pipe flanges in bronze, gray iron, ductile iron, or steel when cast integral with valves and fittings, as well as the companion flanges, when so required by the standard for the product.

This Standard Practice also applies to the spot facing for SI (metric) bolting used in bolted joints not covered by the referenced flange standards herein.