UL 343:9ED 2008-12

FOREWORD
INTRODUCTION
1. Scope
2. General
3. Glossary
CONSTRUCTION
4. Assembly
5. Materials
6. Strength of Parts
7. Bodies, Covers, and Heads
8. Shaft Seals and Stuffing Boxes
9. Springs
10. Diaphragms
11. Bases
12. Integral Tanks
13. Strainers
14. Floats
15. Control Application
16. Piping and Fittings
ELECTRICAL EQUIPMENT
17. General
18. Enclosures
19. Motors
20. Wiring Methods
PERFORMANCE
21. General
22. Deformation - Test No.1
23. Operation of Pressure-Regulating and Nozzle Shutoff
     Valves Combined with a Pump Assembly - Test No.2
24. Operation of Combination Pump and Compressor
     Assemblies - Test No.3
25. Operation of Automatic Fuel Oil Pumps - Test No.4
26. Vacuum and Capacity of Power-Operated Pumps - Test
     No.5
27. Endurance - Test No.6
28. Static-Pressure Leakage - Test No.7
29. High-Pressure Leakage - Test No.8
30. Hydrostatic-Pressure Strength - Test No.9
31. Mercurous-Nitrate Immersion - Test No.10
MANUFACTURING AND PRODUCTION TESTS
32. General
MARKING
33. General
APPENDIX A
Standards for Components

This revision of ANSI/UL 343 dated December 6, 2021 includes the addition of biodiesel (B6-B20) requirements for pumps for oil-burning appliances: Supplement SA and Supplement SB.

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 such equipment.