ANSI Z21.18 : 2007

Part I - Construction
1.1 Scope
1.2 Data to be Furnished by the Manufacturer
1.3 Assembly
1.4 Connections
1.5 Bolts and Screws
1.6 Adjustments
1.7 Strength
1.8 Vent Connections and Vent Limiters
1.9 Springs
1.10 Finish
1.11 Materials
1.12 Instructions
1.13 Marking
Part II - Performance
2.1 General
2.2 Test and Reference Gases
2.3 Test Pressures
2.4 Leakage
2.5 Strength and Deformation
2.6 Mounting Regulator for Test
2.7 Pressure Drop Capacity
2.8 Outlet Pressure Range
2.9 Range of Regulation Capacity
2.10 Regulators Designated to Operate At Pilot
     Flow Rate
2.11 Regulators for Use on Domestic Gas Ranges
2.12 Integrity of Operation
2.13 Continued Operation
2.14 Resistance to Permanent Damage at Excessive
     Supply Pressure
2.15 Vent Limiter
2.16 Marking Material Adhesion and Legibility
Part III - Negative Pressure Regulators Performance
3.1 General
3.2 Test and Reference Gases
3.3 Test Pressures
3.4 Leakage
3.5 Strength and Deformation
3.6 Mounting Regulator for Test
3.7 Pressure Drop Capacity
3.8 Outlet Pressure Range
3.9 Range of Regulation Capacity
3.10 Regulators Designated To Operate at Pilot
     Flow Rate
3.11 Regulators for Use On Domestic Gas Ranges
3.12 Integrity of Operation
3.13 Continued Operation
3.14 Vent Limiter
3.15 Marking Material Adhesion and Legibility
EXHIBIT A - Items Unique To Canada
EXHIBIT B - List Of Reference Standards
Part IV - Manufacturing And Production Tests
Part V - Definitions
APPENDIX A - Table of Conversion Factors

Describes gas appliance pressure regulators, which are not a part of a combination control constructed entirely of new, unused parts and materials, hereinafter referred to as regulators, intended for application on individual gas appliances.