MSS SP-105-2010
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Instrument Valves for Code Applications
Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180 Phone: (703) 281-6613 Fax: (703) 281-6671 e-mail:
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MSS
STANDARD PRACTICE
SP-105
This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 115 and the MSS Coordinating Committee. The content of this Standard Practice is the result of the efforts of competent and concerned volunteers to provide an effective, clear, and non-exclusive specification that will benefit the industry as a whole. This MSS Standard Practice is intended as a basis for common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does not in itself preclude the manufacture, sale, or use of products not conforming to the Standard Practice. Mandatory conformance is established only by reference in a code, specification, sales contract, or public law, as applicable. "Unless otherwise specifically noted in this MSS Standard Practice, other standards referred to herein are identified by the date of issue that was applicable to this Standard Practice at the date of issue of this Standard Practice. See Annex A. This Standard Practice shall remain silent on the applicability of those other standards of prior or subsequent dates of issue even though applicable provisions may not have changed. References contained herein which are bibliographic in nature are noted as ‘supplemental’ in the text.”
Substantive changes in this 2010 edition are “flagged” by parallel bars as shown on the margins of this paragraph. The specific detail of the change may be determined by comparing the material flagged with that in the previous edition.
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Any part of this Standard Practice may be quoted. Credit lines should read `Extracted from MSS SP105-2010 with permission of the publisher, Manufacturers Standardization Society of the Valves and Fittings Industry, Inc.'. Reproduction is prohibited under copyright convention unless written permission is granted by Manufacturers Standardization Society of the Valve and Fittings Industry Inc.
Originally Approved: July 1990 Originally Published: October 1990 Current Edition Approved: May 2010 Current Edition Published: September 2010
Copyright ©, 1990, 1996, 2010 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A.
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MSS
STANDARD PRACTICE
SP-105
TABLE OF CONTENTS
SECTION 1 2 3 4 5 6 7
PAGE SCOPE............................................................................................................................................... 1 DEFINITIONS .................................................................................................................................. 1 MATERIALS .................................................................................................................................... 1 DESIGN REQUIREMENTS ............................................................................................................. 2 QUALIFICATION ............................................................................................................................ 3 ACCEPTANCE TESTING ............................................................................................................... 5 MARKING ........................................................................................................................................ 5
FIGURE 1
Direct Mounted Instrument Manifold Gasket Groove and Flange Details ........................................ 4
ANNEX A
Referenced Standards and Applicable Dates ..................................................................................... 6
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MSS
STANDARD PRACTICE
SP-105
INSTRUMENT VALVES FOR CODE APPLICATIONS
1. SCOPE 2.6 Manifold Valve Two or more instrument valves fabricated into a single valve body.
1.1 This Standard Practice applies to small valves and manifold valves developed for and predominately used in instrument, control, and sampling piping systems. It covers steel and alloy valves of nominal pipe size (NPS) 1 and smaller, and pressure ratings of 15,000 psi and lower at 100°F.
2.7 Cold Working Pressure Rating The maximum allowable working pressure of a valve at ambient conditions (-20°F to 100F), abbreviated CWP.
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.
2.8 Pressure Boundary Parts The following items are defined to be pressure boundary parts. Each item may not apply to all valve designs. a) Body b) Bonnet c) Union Nut d) Body to Bonnet Bolting
1.3 The application of valve type, size, rating, materials of construction, and suitability for the service are the responsibility of the purchaser and are outside the scope of this Standard Practice.
e) Body Bolting 2.9 Packless Valve A valve with a diaphragm or bellows stem seal instead of a packing or Oring seal at the stem.
2. DEFINITIONS
3. MATERIALS
2.1 General Definitions given in MSS SP-96 apply to this Standard Practice. --```,,,`,,,``,,`,``,,```,,`,`,,-`-`,,`,,`,`,,`---
3.1 General The pressure boundary parts of the valve shall be made of the materials specified herein.
2.2 Instrument Valves Valves designed for use in instrument, control, and sampling piping systems, (e.g., see ASME B31.1, Article 122.3).
3.2. Non-pressure boundary parts (such as the stem, glands, packing nut) shall be made of materials compatible with the pressure boundary parts materials. For compression packing systems, see MSS SP-132.
2.3 Instrument Piping Piping used to connect instruments to main piping or other instruments.
3.3 The following materials are acceptable for use as pressure boundary parts.
2.4 Control Piping Piping used to interconnect pneumatically or hydraulically operated control apparatuses, or to signal control systems.
a) Materials listed in ASME B16.34 b) Materials listed in ASME B31.1
2.5 Sampling Piping Piping used for the collection of samples (such as steam, water, oil, gas, and chemicals) from process systems.
c) Materials listed in ASME B31.3 d) Materials listed in ASME Boiler and Pressure Vessel Code, Section III e) Materials listed in ASME B31.12
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STANDARD PRACTICE
temperature other than that of the contained fluid is the responsibility of the user, subject to the requirements of applicable codes and regulations.
3.4 Certified material test reports shall be obtained for pressure boundary parts materials. Certifications shall include chemical analysis and mechanical properties.
4.2
4. DESIGN REQUIREMENTS
End connections
4.2.1 Pipe Threads Tapered pipe threads shall be in accordance with one of the following:
4.1 Valves designed in accordance with this Standard Practice shall have their working pressure established by calculation, hydrostatic proof and burst tests or both as specified in Section 5.
a) ASME B1.20.1 b) ASME B1.20.3
4.1.1 Qualification of valves designed to Section 4.1 shall be conducted on each design and size of valve to establish the CWP rating.
c) CGA V-l 4.2.2 Pipe Socket Weld Connections The socket bore diameter and the depth of socket shall be in accordance with the dimensions and tolerances of ASME B16.11.
4.1.2 The CWP rating of valves of identical design and size but made of different materials shall be proportional to the allowable stress of each material or may be determined by hydrostatic qualification tests on valves made of each material, at the manufacturer’s option.
4.2.3 Tube socket weld dimensions shall be in accordance with the manufacturer’s standard. 4.2.4 Butt weld connections for pipe shall have an end preparation in accordance with ASME B16.25.
4.1.3 The CWP rating of valves of identical design and size but with different end connections shall be determined by the rating of the valve or the end connection, whichever is less.
4.2.5 Butt weld connections for tube shall be in accordance with the manufacturer’s standard.
4.1.4 The CWP rating of a valve design may be established by the manufacturer at a value lower than the rating allowed by the qualification tests of Section 5. In that case the lower pressure rating may be established for a valve design and size, regardless of materials or end connections. Such reduced ratings are usually dictated by performance limitations such as operating torque, cycle life, or non-metallic component limitations.
4.2.6 Pipe or tube stub extension end connections may be socket welded or butt welded to the valve. The diameter and wall thickness shall be the manufacturer’s standard. The standard stub extension lengths are 3” or 6”, measured from the end of the valve. 4.2.7 Mechanical tube fittings shall be in accordance with the manufacturer’s design. Fittings may be machined integral with, welded to, or threaded to the valve body.
4.1.5 Packing nut adjustment may be necessary to compensate for temperature change.
4.2.8 Weld qualifications for end connections welded to the valve body shall be in accordance with ASME Boiler and Pressure Vessel Code, Section IX.
4.1.6 The manufacturer shall provide pressure ratings for temperatures above 100°F. 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
4.2.9 Other end connections not listed herein may be provided as agreed upon by the manufacturer and purchaser.
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SP-105
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MSS
MSS
STANDARD PRACTICE
4.3 Direct Mounted Instrument Manifold Gasket Groove and Flange Details The standard groove for gaskets and minimum flange or plate thickness shall be per Figure 1. Other groove dimensions shall be considered special.
5.5
Proof Test Procedure
5.5.1 Each test valve shall pass a hydrostatic proof test in accordance with the following minimum requirements: a) Fluid: Water or hydraulic oil b) Temperature: 50°F to 125°F
5. QUALIFICATION
c) Pressure: Two times the CWP rating
5.1 General Valve designs shall be qualified by calculation and hydrostatic proof or hydrostatic proof and burst tests at the option of the manufacturer. --```,,,`,,,``,,`,``,,```,,`,`,,-`-`,,`,,`,`,,`---
5.2
d) Time: One minute, minimum, at proof pressure e) Position: Placed in all positions capable of subjecting pressure boundary components to internal pressure.
Documentation
5.2.1 Hydrostatic proof and burst tests shall be conducted in accordance with the manufacturer’s written procedure. Copies of the test procedure and test reports shall be kept on file by the manufacturer.
5.5.2 There shall be no visible leakage during the proof test at any pressure containing part, joint, or seal. 5.5.3 The stem packing may be adjusted during the proof test to stop leakage. No other adjustments are permitted on any other pressure boundary joints or seals.
5.2.2 Stress and pressure rating calculations shall be in accordance with the methods in this Standard Practice. Copies of the calculations shall be kept on file by the manufacturer.
5.6
5.3 Test Valves Valves shall have their ratings confirmed by testing three (3) production valves by the method described in Section 5.5.
Burst Test Procedure
5.6.1 Each test valve shall be hydrostatically shell tested to failure by rupture. The hydrostatic pressure at which rupture occurs shall be recorded. The same valves used for the proof test shall be used for the burst test.
5.3.1 Similar valves of the same size and design, but having minor modifications, may also be considered qualified. Where those modifications would increase the level of stress in pressure boundary parts, the rating must be reduced proportionately to the ratio of the stresses. Stresses are to be calculated as specified in Section 5.8. If the materials have different strengths, the ratio of material allowable stresses shall also be used to determine the new rating.
5.6.2 Leakage is permitted at the valve packing, gaskets, and pressure retaining joints during the burst test, at pressures above the proof pressure. 5.6.3 If the hydrostatic test is stopped before rupture occurs, the highest sustained pressure attained shall be considered the burst pressure for that valve.
5.4 Material Properties The actual tensile and yield strength of the pressure boundary parts of the test specimens shall be obtained from heat traceable material certifications or by submitting sample material from the same lot to testing in accordance with the procedures of the ASME Boiler and Pressure Vessel Code, Section VIII, Article UG-101 (J).
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SP-105
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STANDARD PRACTICE
SP-105
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MSS
GENERAL NOTE: Dimensions are in inches.
FIGURE 1 Direct Mounted Instrument Manifold Gasket Groove and Flange Details
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MSS
STANDARD PRACTICE
5.7 Pressure Rating Determination When determined by the method of Section 5.6, the CWP rating shall be less than or equal to the pressure determined from the burst pressure as follows:
6. ACCEPTANCE TESTING 6.1 Each production valve shall pass a seat leakage test and a shell test in accordance with MSS SP-61. 7. MARKING
P 0.25 B T m /T a
7.1 Each valve shall be marked in accordance with MSS SP-25 with at least the following:
Where: P = CWP Rating
a) Manufacturer’s identification;
B = The lowest burst test pressure recorded for the three specimens tested
b) Flow direction (if applicable); c) Manufacturer’s model number;
Ta = Actual tensile strength of the test specimen
d) Material grade (unless coded in model number).
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Tm = Specified minimum tensile strength of the material 5.8
7.2 Additional markings may be applied in accordance with MSS SP-25.
Calculations
5.8.1 Stress calculations shall be in accordance with ASME B31.1, ASME B31.3, or ASME Boiler and Pressure Vessel Code, Section III, whichever is applicable. 5.8.1.1 No allowance for corrosion need be taken unless required by the user. Where corrosion will be present the manufacturer and user may agree to rate the valve based on the anticipated corrosion rate and required length of service. The user is responsible for monitoring the condition of the valve’s pressure boundary walls. 5.8.2 Allowable stresses shall be in accordance with the Maximum Allowable Stress Tables in ASME B31.1, ASME B31.3, or ASME Boiler and Pressure Vessel Code, Section III, whichever is applicable. 5.8.3 The working pressure at a temperature other than the CWP is calculated by multiplying the CWP by the ratio of the allowable stress at the new temperature divided by the allowable stress at the CWP, although as stated in Section 4.1.4, performance limitations may further restrict the working pressure at any given temperature.
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SP-105
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MSS
STANDARD PRACTICE
SP-105
ANNEX A Referenced Standards and Applicable Dates
This Annex is an integral part of this Standard Practice and is placed after the main text for convenience. Standard Name
Description
ASME; ANSI/ASME B1.20.1-1983 (R2006) B1.20.3-1976 (R2008) B16.11-2009 B16.25-2007 B16.34-2009 B31.1-2007 B31.12-2008 B31.3-2008 BPVC-III-2007 BPVC-VIII, Div.1-2007 BPVC-IX-2007
Pipe Threads, General Purpose, Inch Dryseal Pipe Threads, Inch Forged Fittings, Socket-Welding and Threaded Buttwelding Ends Valves Flanged, Threaded and Welding End Power Piping Hydrogen Piping and Pipelines Process Piping Boiler and Pressure Vessel Code, Section III, Rules for Construction of Nuclear Power Plant Components Boiler and Pressure Vessel Code, Section VIII, Division I, Rules for Construction of Pressure Vessels Boiler and Pressure Vessel Code, Section IX, Welding and Brazing Qualifications
CGA V-l-2005
Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections; including AMD 1
MSS Standard Marking System for Valves, Fittings, Flanges and Unions Pressure Testing of Valves Guidelines on Terminology for Valves and Fittings Compression Packing Systems for Instrument Valves --```,,,`,,,``,,`,``,,```,,`,`,,-`-`,,`,,`,`,,`---
SP-25-2008 SP-61-2009 SP-96-2001 (R 2005) SP-132-2010
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MSS
STANDARD PRACTICE
SP-105
ANNEX A (Continued) Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice and is placed after the main text for convenience.
ANSI
American National Standards Institute, Inc. 25 West 42nd Street, Fourth Floor New York, NY 10036-7406
ASME
American Society of Mechanical Engineers Three Park Avenue New York, NY 10016-5990
CGA
Compressed Gas Association 4221 Walney Road, Fifth Floor Chantilly, VA 20151-2923
MSS
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, N.E. Vienna, VA 22180-4602
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Publications of the following organizations appear on the previous page:
Listing of MSS Standard Practices TITLE SP-6-2007 SP-9-2008 SP-25-2008 SP-42-2009 SP-43-2008 SP-44-2010 SP-45-2003 SP-51-2007 SP-53-1999
Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings Spot Facing for Bronze, Iron and Steel Flanges Standard Marking System for Valves, Fittings, Flanges, and Unions Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged and Butt Weld Ends (Classes 150, 300 & 600) Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications (Incl. 2010 Errata Sheet) Steel Pipeline Flanges (R 2008) Bypass and Drain Connections Class 150LW Corrosion Resistant Flanges and Cast Flanged Fittings (R 2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components - Magnetic Particle Examination Method SP-54-1999 (R 2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components - Radiographic Examination Method SP-55-2006 Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components - Visual Method for Evaluation of Surface Irregularities SP-58-2009 Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and Installation (incorporates content of SP-69, 77*, 89*, and 90*) SP-60-2004 Connecting Flange Joint Between Tapping Sleeves and Tapping Valves SP-61-2009 Pressure Testing of Valves SP-65-2008 High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets SP-67-2002a Butterfly Valves SP-68-1997 (R 2004) High Pressure Butterfly Valves with Offset Design SP-69-2003 Pipe Hangers and Supports - Selection and Application (ANSI-approved American National Standard) SP-70-2006 Gray Iron Gate Valves Flanged and Threaded Ends SP-71-2005 Gray Iron Swing Check Valves, Flanged and Threaded Ends SP-72-2010 Ball Valves with Flanged or Butt-Welding Ends for General Service SP-75-2008 Specification for High-Test, Wrought, Butt-Welding Fittings SP-78-2005a Gray Iron Plug Valves Flanged and Threaded Ends SP-79-2009 Socket Welding Reducer Inserts SP-80-2008 Bronze Gate, Globe, Angle, and Check Valves SP-81-2006a Stainless Steel, Bonnetless, Flanged Knife Gate Valves SP-83-2006 Class 3000 Steel Pipe Unions Socket Welding and Threaded SP-85-2010 Gray Iron Globe & Angle Valves Flanged and Threaded Ends SP-86-2009 Guidelines for Metric Data in Standards for Valves, Flanges, Fittings, and Actuators SP-88-2010 Diaphragm Valves SP-91-2009 Guidelines for Manual Operation of Valves SP-92-1999 MSS Valve User Guide SP-93-2008 Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components - Liquid Penetrant Examination Method SP-94-2008 Quality Standard for Ferritic and Martensitic Steel Castings for Valves, Flanges, Fittings, and Other Piping Components - Ultrasonic Examination Method SP-95-2006 Swage(d) Nipples and Bull Plugs SP-96-2001 (R 2005) Guidelines on Terminology for Valves and Fittings SP-97-2006 Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threaded, and Buttwelding Ends SP-98-2001 (R 2005) Protective Coatings for the Interior of Valves, Hydrants, and Fittings SP-99-2010 Instrument Valves SP-100-2009 Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Valves SP-101-1989 (R 2001) Part-Turn Valve Actuator Attachment - Flange and Driving Component Dimensions and Performance Characteristics SP-102-1989 (R 2001) Multi-Turn Valve Actuator Attachment - Flange and Driving Component Dimensions and Performance Characteristics SP-104-2003 Wrought Copper Solder Joint Pressure Fittings SP-105-2010 Instrument Valves for Code Applications SP-106-2003 Cast Copper Alloy Flanges and Flanged Fittings Class 125, 150 and 300 SP-108-2002 Resilient-Seated Cast-Iron Eccentric Plug Valves SP-109-1997 (R 2006) Welded Fabricated Copper Solder Joint Pressure Fittings SP-110-2010 Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends SP-111-2001 (R 2005) Gray-Iron and Ductile-Iron Tapping Sleeves SP-112-1999 (R 2004) Quality Standard for Evaluation of Cast Surface Finishes - Visual and Tactile Method. This SP must be used with a 10-surface, three dimensional Cast Surface Comparator, which is a necessary part of the standard. Additional Comparators available separately. SP-113-2001 (R 2007) Connecting Joint between Tapping Machines and Tapping Valves SP-114-2007 Corrosion Resistant Pipe Fittings Threaded and Socket Welding Class 150 and 1000 SP-115-2010 Excess Flow Valves, 1 1/4 NPS and Smaller, for Fuel Gas Service SP-116-2003 Service-Line Valves and Fittings for Drinking Water Systems SP-117-2006 Bellows Seals for Globe and Gate Valves SP-118-2007 Compact Steel Globe & Check Valves - Flanged, Flangeless, Threaded & Welding Ends (Chemical & Petroleum Refinery Service) SP-119-2010 Factory-Made Wrought Belled End Pipe Fittings for Socket-Welding SP-120-2006 Flexible Graphite Packing System for Rising Stem Steel Valves - Design Requirements SP-121-2006 Qualification Testing Methods for Stem Packing for Rising Stem Steel Valves SP-122-2005 Plastic Industrial Ball Valves SP-123-1998 (R 2006) Non-Ferrous Threaded and Solder-Joint Unions for Use with Copper Water Tube SP-124-2001 Fabricated Tapping Sleeves SP-125-2010 Gray Iron and Ductile Iron In-Line, Spring-Loaded, Center-Guided Check Valves SP-126-2007 Steel In-Line Spring-Assisted Center Guided Check Valves SP-127-2001 Bracing for Piping Systems Seismic-Wind-Dynamic Design, Selection, Application SP-128-2006 Ductile Iron Gate Valves SP-129-2003 (R 2007) Copper-Nickel Socket-Welding Fittings and Unions SP-130-2003 Bellows Seals for Instrument Valves SP-131-2010 Metallic Manually Operated Gas Distribution Valves SP-132-2010 Compression Packing Systems for Instrument Valves SP-133-2010 Excess Flow Valves for Low Pressure Fuel Gas Appliances SP-134-2010 Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensions SP-135-2010 High Pressure Knife Gate Valves SP-136-2007 Ductile Iron Swing Check Valves SP-137-2007 Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components SP-138-2009 Quality Standard Practice for Oxygen Cleaning of Valves & Fittings SP-139-2010 Copper Alloy Gate, Globe, Angle, and Check Valves for Low Pressure/Low Temperature Plumbing Applications (R YEAR) Indicates year standard reaffirmed without substantive changes Price List Available Upon Request * SP-77, 89, and 90 have been withdrawn effective 8/23/2010; however, the contents of these SPs are now part of newly revised SP-58-2009. MSS is an ANSI-accredited American National Standards developer. A number of former MSS Standard Practices have been adopted and published by other developers as American National Standards. In order to maintain a single source of authoritative information, MSS has withdrawn its Standard Practices in such cases.
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, N.E., Vienna, VA 22180-4620 • (703) 281-6613 • Fax # (703) 281-6671
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