1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 343 Pumps for Oil-Burning AppliancesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
2、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Pumps for Oil-Burning Appliances, UL 343 Ninth Edition, Dated December 17, 2008 Summary of Topics This edition of UL 343 is being revised to reect the rst time ANSI approval of the Standard. No changes in the requi
3、rements are involved. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The revisions are substantially in accordance with Proposal(s) on this subject dated August 10, 2012. All rights reserved. No part of this publ
4、ication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not
5、limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability
6、to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards
7、for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer sy
8、stem. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that h
9、ave a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JUNE 12, 2013 UL 343 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 12, 2013 UL 343 tr2 No Text on This PageUL COPYRIG
10、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 17, 2008 (Title Page Reprinted: June 12, 2013) 1 UL 343 Standard for Pumps for Oil-Burning Appliances First Edition July, 1957 Second Edition June, 1971 Third Edition August, 1974 Fourth Edition
11、 April, 1976 Fifth Edition April, 1982 Sixth Edition July, 1986 Seventh Edition April, 1993 Eighth Edition May, 1997 Ninth Edition December 17, 2008 This ANSI/UL Standard for Safety consists of the Ninth Edition including revisions through June 12, 2013. The most recent designation of ANSI/UL 343 as
12、 an American National Standard (ANSI) occurred on June 12, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals s
13、hould be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships,
14、 and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 343-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 17, 2008 PUMPS FOR OIL-BURNING A
15、PPLIANCES - UL 343 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Components 5 3 Units of Measurement .5 4 Undated References 6 5 Glossary .6 CONSTRUCTION 6 Assembly 6 7 Materials .7
16、8 Strength of Parts 8 9 Bodies, Covers, and Heads 8 10 Shaft Seals and Stuffing Boxes 9 11 Springs 11 12 Diaphragms 11 13 Bases .12 14 Integral Tanks 12 15 Strainers .13 16 Floats .13 17 Control Application 14 18 Piping and Fittings 14 ELECTRICAL EQUIPMENT 19 General 14 20 Enclosures .15 21 Motors .
17、16 22 Wiring Methods .18 PERFORMANCE 23 General 19 24 Deformation Test No. 1 19 25 Operation of Pressure-Regulating and Nozzle Shutoff Valves Combined With a Pump Assembly Test No. 2 .20 26 Operation of Combination Pump and Compressor Assemblies Test No. 3 .21 27 Operation of Automatic Fuel Oil Pump
18、s Test No. 4 21 28 Vacuum and Capacity of Power-Operated Pumps Test No. 5 23 29 Endurance Test No. 6 .24 30 Static-Pressure Leakage Test No. 7 .24 31 High-Pressure Leakage Test No. 8 25 32 Hydrostatic-Pressure Strength Test No. 9 25 33 10-Day Moist Ammonia-Air Stress Cracking Test .26 MANUFACTURING
19、AND PRODUCTION TESTS 34 General 26 DECEMBER 17, 2008 PUMPS FOR OIL-BURNING APPLIANCES - UL 343 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 35 General 27 Appendix A Standards for ComponentsA1 DECEMBER 17, 2008 PUMPS FOR OIL-BURNI
20、NG APPLIANCES - UL 343 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover pumps that are intended to be used as part of oil-burning appliances or installed in fuel-oil piping systems serving su
21、ch equipment. Oil-burning appliance pumps may be either automatic or power-operated. 1.2 Requirements for the installation and use of oil-burning appliance pumps are included in the Standard for the Installation of Oil-Burning Equipment, NFPA 31. 2 Components 2.1 Except as indicated in 2.2, a compon
22、ent of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components used in the products covered by this standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature o
23、r characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are inco
24、mplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 Values stated wit
25、hout parentheses are the requirement. Values in parentheses are explanatory or approximate information. DECEMBER 17, 2008 PUMPS FOR OIL-BURNING APPLIANCES - UL 343 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Undated References 4.1 Any
26、 undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of this standard, the following denitions apply. 5.2 AUTOMATIC PUMPS Assemblies that automatically
27、pump oil from the supply tank and deliver this oil by gravity under a constant head to an oil-burning appliance and that have automatic means to prevent the abnormal discharge of oil. These pumps are intended for installation at least 1 foot (305 mm) above the top of the supply tank and are arranged
28、 to stop pumping automatically in case of total breakage of the oil-supply line between the pump and the appliance. 5.3 DIFFERENTIAL PRESSURE The difference in pressure, measured at the discharge port, between the value obtained with the pump operating and after shutdown. 5.4 NORMAL OPERATING PRESSU
29、RE The pressure at which the pump is normally operated on the appliance. 5.5 POWER-OPERATED PUMPS Pumps for use in the assembly of power-operated oil burners or for use as oil-transfer pumps. 5.6 RATED PRESSURE The minimum and maximum operating pressures recommended by the manufacturer of the pump.
30、5.7 REGULATED PRESSURE The minimum and maximum operating pressures obtainable by adjustment of the pressure-regulating valve. CONSTRUCTION 6 Assembly 6.1 An automatic pump shall include all the components necessary for its intended function. 6.2 The construction of a pump shall be such that parts ca
31、n be reassembled after being dismantled to the extent needed for servicing. 6.3 Means shall be provided for the purpose of making any necessary eld adjustment. 6.4 Screws or bolts used to attach a part that is detached for servicing of the pump shall be capable of holding the part upon the applicati
32、on of the torques specied in Table 6.1 after removal and replacement. DECEMBER 17, 2008 PUMPS FOR OIL-BURNING APPLIANCES - UL 343 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 6.1 Torque requirements for screws or bolts American sta
33、ndard screw size, Torque, I.S.O. screw size, Torque, No. or inch (mm) lb-in. (Nm) mm Nm (lb-in.) 41 . 6 (14) No. 8 (4.2) 18 (2.0) 4.5 2.6 (23) 10 (4.8) 30 (3.4) 5 4.2 (37) 1/4 inch (6.4) 100 (11.3) 6 8.7 (77) 7 15.0 (133) 5/16 (7.9) 200 (22.6) 8 23.5 (208) 9 33.6 (297) 3/8 (9.5) 350 (39.6) 10 45.2 (
34、400) 7/16 (11.1) 575 (65.0) 12 81.0 (715) 1/2 (12.7) 850 (96.0) 14 128.0 (1130) 9/16 (14.3) 1200 (136.0) 5/8 (15.9) 1600 (181.0) 16 185.0 (1640) 6.5 The pump shall incorporate a provision for support that is independent of piping, tubing, or conduit that may be connected to the pump. 6.6 A brazing m
35、aterial used for joining liquid-conning parts of a pump shall have a melting point (solidus temperature) not less than 538C (1000F). 7 Materials 7.1 Liquid-conning and operating parts of a pump, other than an automatic pump, shall be made of material having a melting point (solidus temperature) of n
36、ot less than 510C (950F) and a tensile strength not less than 10,000 psi (68.9 MPa) at 204C (400F). 7.2 A part in contact with the liquid to be handled by a pump shall be resistant to the action of the liquid. 7.3 A synthetic rubber part shall not show excessive volume change when considered on the
37、basis of its intended function, following immersion for 70 hours at a temperature of 23 2C (73.4 3.6F) in No. 3 Swelling Oil. The change in volume is to be determined in accordance with the Standard Test Method for Rubber Property-Effect of Liquids, ASTM D471-79(1991). 7.4 A change in volume of not
38、more than 25 percent swelling or 1 percent shrinkage is considered to comply with the requirement in 7.3. 7.5 A part made of synthetic rubber that may be affected by aging shall not crack or show visible evidence of deterioration following exposure for 96 hours to oxygen at a pressure of 300 psig (2
39、070 kPa), and at a temperature of 70C (158F). 7.6 Other parts shall be resistant to atmospheric corrosion and attack by the liquid they may contact in service if corrosion of such parts may result in external leakage. A ferrous material of the thickness specied in Table 7.1 is considered adequate fo
40、r the preceding when uncoated and when intended for use with the designated liquid. DECEMBER 17, 2008 PUMPS FOR OIL-BURNING APPLIANCES - UL 343 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 7.1 Thickness of uncoated ferrous material
41、s Liquid in contact with material Minimum thickness Sheet metal, Castings, inch (mm) inch (mm) Fuel oils and kerosene 0.042 (1.07) 1/8 (3.2) 7.7 If atmospheric corrosion of a ferrous part will interfere with the intended function of a pump, the part shall be of a corrosion-resistant material or be p
42、rovided with a corrosion-resistant protective coating. 7.8 A protective coating shall provide resistance against corrosion to a degree not less than that afforded sheet steel by the application of a uniform coating of zinc on each surface to an average thickness of not less than 0.0002 inch (0.005 m
43、m) with a minimum thickness at any location of 0.00015 inch (0.0038 mm). 7.9 A part made of drawn brass or machined from brass rod stock shall withstand, without cracking, the 10-Day Moist Ammonia-Air Stress Cracking Test, Section 33. 7.10 A gasket used in the assembly of a pump to seal anged joints
44、 shall be impervious to fuel oil. For at anges, a plant-ber gasket shall not be more than 1/32 inch (0.8 mm) thick. 8 Strength of Parts 8.1 Parts of a pump, except mechanical shaft seals and vented tanks, that are subjected to pressure during usage shall be constructed to withstand, without bursting
45、, a hydrostatic pressure equivalent to ve times the maximum pressure to which they may be subjected. See Hydrostatic-Pressure Strength Test No. 9, Section 32. 9 Bodies, Covers, and Heads 9.1 An opening threaded for pipe connections shall be threaded in accordance with the Standard for General Purpos
46、e Pipe Threads, ANSI/ASME B1.20.1. Exception: Pumps intended for use in installations where pipe ttings incorporate other than NPT type threads shall be permitted to be provided with pipe threads complying with a national pipe thread standard compatible with those ttings. The pipe thread type shall
47、be identied in accordance with 35.1. 9.2 Webs, shoulders, and other obstructions shall be removed from the inner ends of internally threaded openings in a body to permit making tight joints. 9.3 An inlet and an outlet connection threaded for attachment to pipe shall be constructed so that when a pip
48、e that is threaded two threads beyond standard size is run into the threaded portion of the opening, it will not distort any portion of the body or adversely affect the operation of the pump. 9.4 A male thread for attachment to a pipe tting shall have no shoulder within the distance specied in Table
49、 9.1 from the beginning of the thread, including any chamfer, nor shall any shoulder prevent an additional turn being made within this distance as determined by assembling the pump into a tting within a tolerance of plus or minus one thread. DECEMBER 17, 2008 PUMPS FOR OIL-BURNING APPLIANCES - UL 343 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 9.1 Shoulder dista
