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ASTM Standarder ventiler

Nedan finner ni olika standarder som gäller för ventiler.


Gate Valve
- Forged. API 602
- Straight through: API 600
- Venturi type: API 597
- Flanges & ends: ASME B16.34
- Thin wall: API 603
- Pipe: API 6 D

Globe valve
- No API standard, Possible referens to BS 1873

Swing Check valve
- API 6 D
- Possible reference to BS 1868


  • End to end dimensions: ANSI B 16.10
  • Flanges & connections: ANSI B16.5 Ø>24"
  • Flanges & connections: BS 3293 Ø<26" to 60"
  • Flanges & connections: MSS SP 44 Serie A and B
  • Welding ends: ANSI B16.25
  • Gasket facing: MSS SP 6
  • Back facing & spot facing: MSS SP 9


  • Inspection & test: API 598 & MSS SP 61

Steel quality

  • Magnetic particle: MSS SP 53
  • Radiographic: MSS SP 54
  • Visual: MSS SP 55
  • Critical areas: ANSI B 16.34
  • Definition of radiography classes: ASTM E 71

Particular Standard

  • Marking: MSS SP 25
  • Dimension & flanges for thin wall: MSS SP 42
  • Dimensions for drain & by-pass: MSS SP 45
  • Sulfurous produce: NACE MR 01-75

ASME/ANSI B16.5 - 1996 - Pipe Flanges and Flanged Fittings
The ASME B16.5 - 1996 Pipe Flanges and Flange Fittings standard covers
pressure-temperature ratings, materials, dimensions, tolerances, marking,
testing, and methods of designating openings for pipe flanges and flanged fittings.

The standard includes flanges with rating class designations
150, 300, 400, 600, 900, 1500, and 2500 in sizes NPS 1/2 through NPS 24,
with requirements given in both metric and U.S units.
The Standard is limited to flanges and flanged fittings made from cast or forged materials,
and blind flanges and certain reducing flanges made from cast, forged, or plate materials.
Also included in this Standard are requirements and recommendations
regarding flange bolting, flange gaskets, and flange joints.

ASME/ANSI B16.10 - 2000 - Face-to-Face and End-to-End Dimensions of Valves
This Standard covers face-to-face and end-to-end dimensions of straightway valves,
and center-to face and center-to-end dimensions of angle valves.
Its purpose is to assure installation interchangeability for valves of a given material,
type size, rating class, and end connection

ASME/ANSI B16.25 - 1997 - Buttwelding Ends
•The Standard covers the preparation of butt welding ends of piping components
to be joined into a piping system by welding.
It includes requirements for welding bevels, for external and internal shaping of
heavy-wall components, and for preparation of internal ends (including dimensions and tolerances).
Coverage includes preparation for joints with the following.
•(a) no backing rings;
•(b) split or non continuous backing rings;
•(c) solid or continuous backing rings;
•(d) consumable insert rings;
•(e) gas tungsten are welding (GTAW) of the root pass.
Details of preparation for any backing ring must be specified in ordering the component.

ASME/ANSI B16.33 - 1990 - Manually Operated Metallic
Gas Valves for Use in Gas Piping Systems Up to 125 psig

General This Standard covers requirements for manually operated metallic valves
sizes NPS 1.2 through NPS 2, for outdoor installation as gas shut-off valves at the end
of the gas service line and before the gas regulator and meter where the designated
gauge pressure of the gas piping system does not exceed 125 psi (8.6 bar).
The Standard applies to valves operated in a temperature environment between .
20 degrees F and 150 degrees F (.29 degrees C and 66 degrees C).
Design This Standard sets forth the minimum capabilities, characteristics,
and properties, which a valve at the time of manufacture must possess,
in order to be considered suitable for use in gas piping systems.

ASME/ANSI B16.34 - 1996 - Valves - Flanged, Threaded, and Welding End
This standard applies to new valve construction and covers pressure-temperature ratings,
dimensions, tolerances, materials, nondestructive examination requirements, testing,
and marking for cast, forged, and fabricated flanged, threaded, and welding end,
and wafer or flangeless valves of steel, nickel-base alloys, and other alloys shown in Table 1.
Wafer or flangeless valves, bolted or through-bolt types, that are installed between flanges
or against a flange shall be treated as flanged end valves.

ASME/ANSI B16.38 - 1985 (R1994) - Large Metallic Valves for Gas Distribution
The standard covers only manually operated metallic valves in nominal pipe
sizes 2 1/2 through 12 having the inlet and outlet on a common center line, which are suitable
for controlling the flow of gas from open to fully closed, for use in distribution and service
lines where the maximum gage pressure at which such distribution piping systems may be
operated in accordance with the code of federal regulations (cfr), title 49, part 192,
transportation of natural and other gas by pipeline; minimum safety standard,
does not exceed 125 psi (8.6 bar). Valve seats, seals and stem packing may be nonmetallic.

ASME/ANSI B16.40 - 1985 (R1994) - Manually Operated Thermoplastic Gas
The Standard covers manually operated thermoplastic valves in nominal sizes
1.2 through 6 (as shown in Table 5).
These valves are suitable for use below ground in thermoplastic distribution
mains and service lines.
The maximum pressure at which such distribution piping systems may be operated is
in accordance with the Code of Federal Regulation (CFR) Title 49, Part 192,
Transportation of Natural and Other Gas by Pipeline; Minimum Safety Standards,
for temperature ranges of .20 deg. F to 100 deg. F (.29 deg. C to 38 deg. C).
This Standard sets qualification requirements for each nominal valve size for each
valve design as a necessary condition for demonstrating conformance to this Standard.
This Standard sets requirements for newly manufactured valves for use in below
ground piping systems for natural gas [includes synthetic natural gas (SNG)],
and liquefied petroleum (LP) gases (distributed as a vapor, with or without the admixture of air)
or mixtures thereof.

ASME/ANSIB16.44 - 1995 - Manually Operated Metallic
Gas Valves for Use in House Piping Systems

This Standard applies to new valve construction and covers quarter turn manually
operated metallic valves in sizes NPS 1/2-2 which are intended for indoor installation as
gas shutoff valves when installed in indoor gas piping between a gas meter
outlet & the inlet connection to a gas appliance.

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