1、 ANSI/MSS SP-135-2016 High Pressure Knife Gate Valves Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180-4602 Phone: (703) 281-6613 Fax: (703) 281-6671 E-mail: standardsmsshq.org ww
2、w.msshq.org MSS STANDARD PRACTICE SP-135i This MSS Standard Practice was originally developed under the consensus of the MSS Technical Committee 114 (Steel Valves) and the MSS Coordinating Committee. In 2012, responsibility for this Standard Practice, and the current revision, was transferred to the
3、 new MSS Technical Committee 409 (Knife Gate Valves); with the MSS Coordinating Committee continuing to provide final review and approval. Future development and maintenance of this Standard Practice will be conducted by the new MSS Technical Committee 409. In addition, this Standard Practice was ap
4、proved by an ANSI/MSS Consensus Committee and ANSI as an American National Standard. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers to provide an effective, clear, and non-exclusive standard that will benefit the industry as a whole. This MSS S
5、tandard Practice describes minimal requirements and 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 Practic
6、e. Mandatory conformance to this Standard Practice is established only by reference in other documents such as a code, specification, sales contract, or public law, as applicable. MSS has no power, nor does it undertake to enforce or certify compliance with this document. Any certification or other
7、statement of compliance with the requirements of this Standard Practice shall not be attributable to MSS and is solely the responsibility of the certifier or maker of the statement. “Unless indicated otherwise within this MSS Standard Practice, other standards documents referenced to herein are iden
8、tified by the date of issue that was applicable to this Standard Practice at the date of approval of this MSS Standard Practice (see Annex A). This Standard Practice shall remain silent on the validity of those other standards of prior or subsequent dates of issue even though applicable provisions m
9、ay not have changed.” By publication of this Standard Practice, no position is taken with respect to the validity of any potential claim(s) or of any patent rights in connection therewith. MSS shall not be held responsible for identifying any patent rights. Users are expressly advised that determina
10、tion of patent rights and the risk of infringement of such rights are entirely their responsibility. In this Standard Practice, all text, notes, annexes, tables, figures, and references are construed to be essential to the understanding of the message of the standard, and are considered normative un
11、less indicated as “supplemental”. All appendices, if included, that appear in this document are construed as “supplemental”. Note that supplemental information does not include mandatory requirements. The SI (metric) units and U.S. customary units in this Standard Practice are regarded separately as
12、 the standard; each should be used independently of the other. Combining or converting values between the two systems may result in non-conformance with this Standard Practice. This Standard Practice has been substantially revised from the previous 2010 edition. It is suggested that if the user is i
13、nterested in knowing what changes have been made, that direct page by page comparison should be made of this document and that of the previous edition. Non-toleranced dimensions in this Standard Practice are nominal unless otherwise specified. Excerpts of this Standard Practice may be quoted with pe
14、rmission. Credit lines should read Extracted from ANSI/MSS SP-135-2016 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry. Reproduction and/or electronic transmission or dissemination is prohibited under copyright convention unless written perm
15、ission is granted by the Manufacturers Standardization Society of the Valve and Fittings Industry Inc. All rights reserved. MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Originally Approved: September 2005 Originally Published: May 20
16、06 Current Edition Approved by MSS: February/April 2015 (original)/July 2015 (revision w/ Class 600) Current Edition Approved by ANSI: April 2016 Current ANSI/MSS Edition Published: June 2016 Copyright , 2016 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed i
17、n U.S.A. MSS STANDARD PRACTICE SP-135ii FOREWORD This MSS Standard Practice, SP-135, is widely used in multiple valve and piping industries and is aligned with the Class-rated design, testing and material requirements of ASME B16.34, and the Class rated pressure, temperature, and dimensional require
18、ments of ASME B16.5 and B16.47. MSS SP-135 is the principal ASME Class rated knife gate valve standard and it is widely accepted as the principal Knife Gate Valve standard for industry users that include: paper, chemical, petro-chemical, hydroelectric power, and fossil fuel power valve and fittings
19、systems. MSS Standard Practice SP-135 was originally published in 2006 as SP-135-2006, High Pressure Steel Knife Gate Valves for the purpose of providing an industry need for a knife gate valve standard that involved high pressure and a Class rated design. The revised 2010 edition of SP-135 revised
20、the title slightly and expanded the valve NPS (DN) coverage; including two (2) sets of Face-to-Face dimensions (Short and Long Pattern). The original one (1) set of Face-to-Face dimensions included in the introductory 2006 edition of SP-135 was retained and rearranged in the tables of the revised 20
21、10 edition of SP-135 as follows: CLASS 150: CLASS 300: NPS 24 (DN 600) Short Pattern This 2016 edition of MSS SP-135, in addition to various editorial and formatting updates, includes: (1) revisions to tables and numbering; (2) an additional Section 5.2.2 marking option; (3) inclusion of NPS 2 36 (D
22、N 50 900) Class 600 valve dimensions in revised scope, body text, and new Tables 3/3M; (4) editorial clarification of several table headings and notes; and (5) updating of the organizations and references in Annex A. This edition was also approved by an ANSI/MSS Consensus Committee and ANSI as an Am
23、erican National Standard. MSS STANDARD PRACTICE SP-135iii TABLE OF CONTENTS SECTION PAGE 1 SCOPE 1 2 STANDARD UNITS 1 3 PRESSURETEMPERATURE RATINGS . 1 4 SIZE 1 5 MARKING . 2 6 MATERIALS . 2 7 DESIGN 2 8 WELDING 3 9 TOLERANCES 3 10 PRODUCTION TEST 4 11 SHIPPING INFORMATION . 4 TABLE 1 ASME Class 150
24、 Valve Dimensions, Inches 4 1M ASME Class 150 Valve Dimensions, Millimeters . 5 2 ASME Class 300 Valve Dimensions, Inches 6 2M ASME Class 300 Valve Dimensions, Millimeters . 7 3 ASME Class 600 Valve Dimensions, Inches . 8 3M ASME Class 600 Valve Dimensions, Millimeters . 9 ANNEX A Referenced Standar
25、ds and Applicable Dates . 10 MSS STANDARD PRACTICE SP-1351 HIGH PRESSURE KNIFE GATE VALVES 1. SCOPE 1.1 This Standard Practice covers the construction requirements for lug- and wafer-type knife gate valves made from ASME Code materials and meeting the applicable gate valve requirements of ASME B16.3
26、4. INFORMATIONAL NOTE: ASME B16.34 Special Class and Limited Class are outside the scope of this Standard Practice. 1.2 This Standard Practice covers flanged body designs compatible with ASME B16.5 flanges for NPS 2 (DN 50) through NPS 24 (DN 600) and ASME B16.47 Series A flanges for NPS 26 (DN 650)
27、 through NPS 48 (DN 1200). 1.3 As an alternative to Section 1.1, this Standard Practice also covers valves that do not meet the body wall thickness of ASME B16.34 but shall be qualified by a proof test. The Class 150, 300, and 600 dimensional, material, and other requirements of this Standard Practi
28、ce, shall apply to these valves. 2. STANDARD UNITS The values stated in either U.S. customary units or SI (metric) units are to be regarded separately as the “standard”. Within the text, the SI (metric) units are shown in parenthesis. The values stated in each system are not exact equivalents; there
29、fore, each system must be used independently of the other. Combining values from the two systems may result in non-conformance with this Standard Practice. 3. PRESSURETEMPERATURE RATINGS 3.1 This Standard Practice is limited to valves with Class 150, Class 300, and Class 600 pressure-temperature rat
30、ings, as described in ASME B16.34 and shall meet all requirements of ASME B16.34, Section 2, for Standard Class pressure-temperature ratings applicable for the material of valve construction. See Section 1.1 of this Standard Practice. 3.2 Class 150, Class 300, or Class 600 valves not conforming to t
31、he ASME B16.34 wall thickness requirements may be pressure-temperature rated by the manufacturer in accordance with proof pressure test data requirements of UG-101 of ASME Boiler and Pressure Vessel Code, Section VIII. The manufacturers rating shall not exceed the applicable Standard Class 150, Stan
32、dard Class 300, or Standard Class 600 flanged valve rating of ASME B16.34 for the applicable body material. 3.3 The body material and design shall establish the pressure-temperature rating of the valve. If the material for the bonnet, or other pressure boundary item, is different than the body mater
33、ial, the design shall be reconciled to insure that the body pressure-temperature rating is maintained at all temperatures. 4. SIZE The valve sizes in Tables 1, 2, and 3 (NPS), and Tables 1M, 2M, and 3M (DN), are the nominal sizes of the end connections. NOTE: The Nominal Diameter (DN) size used in i
34、nternational and other standards is related to NPS in this Standard Practice as follows: DN = 25 x NPS (For NPS 4) MSS STANDARD PRACTICE SP-1352 5. MARKING 5.1 Valves shall be marked in accordance with ASME B16.34, MSS SP-25, and with the following requirements and modifications: a) Manufacturers na
35、me or trademark/logo. b) The body material of construction or code, when more than one material or grade of material is used each shall be identified. When lining in contact with the fluid is used, it shall be listed and identified as “lining”. It is not required to repeat the material designation o
36、n fabricated bodies. c) For valves manufactured for closure in one direction only, the valve shall be marked showing the “seat side” (downstream side) of the valve in such a manner that the markings can be seen with the valve installed in the pipeline. The user shall be responsible for correct direc
37、tional installation. Bi-directional closure valves need no closure direction marking. d) A tag is to be attached to the valves for installation purposes indicating: 1) Care to be taken in valve installation with respect to direction of closure. 2) Care to be taken when installing studs or bolts in t
38、he tapped holes of the flange in the area of the chest to prevent chest damage. The chest is the body area between the packing chamber and the flanges. INFORMATIONAL NOTICE: Proper bolting choice is emphasized during field installation to prevent the bolts from rotating and advancing against the bod
39、y wall. 3) Packing nuts may require adjustment to obtain a tight seal. e) The stem material need not be listed. 5.2 Compliance 5.2.1 Valves complying with all applicable requirements of Standard Class 150 or 300 of ASME B16.34 shall be marked “B16.34” on the nameplate. 5.2.2 Valves not meeting wall
40、thickness requirements of ASME B16.34 may be marked “SP-135” or “SP135” on the nameplate. 6. MATERIALS 6.1 The valve body, bonnet and body joint bolting shall be constructed of materials as referenced in Table 1 of ASME B16.34. All other provisions of ASME B16.34, Paragraph 5 shall apply. 6.2 Intern
41、al part materials shall have a corrosion resistance equivalent to or better than the valve body. 7. DESIGN 7.1 The design of all valves shall prevent permanent distortion of the body or seats when tested as specified in Section 10. Some permanent distortion of parts is acceptable during the shell te
42、st of Section 10.1 provided it can be demonstrated that there will be no further deformation upon subsequent pressure loadings. 7.2 Threaded holes used for flange bolting shall provide for full thread engagement to a depth of not less than the nominal bolt diameter. Unless otherwise specified by the
43、 customer, threaded holes for flange bolting shall be tapped in accordance with ASME B1.1 Coarse Thread Series Class 2B for bolts 1 inch and smaller, and shall be tapped to the 8-Thread Series Class 2B for bolts 118inches or larger. 7.3 The valve port minimum flow diameter shall be in accordance wit
44、h Appendix A of ASME B16.34, for the applicable pressure class and valve size. MSS STANDARD PRACTICE SP-1353 7.4 Because of variations in basic valve design, differential pressure and valve accessibility, it is not possible to standardize the conditions under which a manually operated valve requires
45、 mechanical assistance. Consideration should be given to the use of mechanical assistance on all valves where the differential pressure, when operating, approaches the valves rated working pressure. Consideration should be given to the use of mechanical assistance on all NPS 12 (DN 300) and larger v
46、alves, regardless of differential pressure. 7.5 Body Wall Thickness 7.5.1 All valve bodies shall have a minimum wall thickness as determined from Table 3A or 3B of ASME B16.34 or equations in Appendix VI of ASME B16.34, for the appropriate Standard Class rating marked on the identification plate. Do
47、cumentation records of design analysis shall be available at the manufacturers facility for inspection by purchaser. 7.5.2 As an alternative to Section 7.5.1, valve assemblies with valve bodies not meeting ASME B16.34 wall thickness shall have the maximum allowable pressure determined using a vessel
48、 proof test in accordance with UG-101 of ASME Boiler and Pressure Vessel Code, Section VIII (see Section 3.2 of this Standard Practice). Documentation records of successful proof test data shall be available at the manufacturers facility for inspection by the purchaser. 7.6 Bonnets, when required, s
49、hall be of the bolted design. 7.7 Valve inch dimensions shall be in accordance with Tables 1, 2, and 3. Valve SI (metric) dimensions shall be in accordance with Tables 1M, 2M, and 3M. A set of dimensions for Short Pattern and Long Pattern valves are presented in these tables. Other face-to-face dimensions may be used by agreement between manufacturer and purchaser. 7.8 The standard flange facing for valves constructed under this Standard Practice shall be 0.06 in. (1.5 mm) raised face (RF) unless otherwise specified in the purchase order. 8. WELDING All body pressur
