CSA B64.0:YY

Definitions, general requirements, and test methods for vacuum breakers and backflow preventers

1 Scope

1.1 Scope of the B64 Series

The CSA B64 Series covers vacuum breakers and backflow preventers that are used in potable water supply systems to prevent cross-connections.

1.2 Scope of this Standard

This Standard specifies definitions, general requirements, test methods, markings, and instructions that are common to some or all of the Standards in the CSA B64 Series.

1.3 Intent of this Standard

This Standard is not a complete Standard in itself and is intended to be used in conjunction with one of the Standards in the CSA B64 Series to form a complete Standard for a particular type of vacuum breaker or backflow preventer.

1.4 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.5 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.1.1:YY

Atmospheric vacuum breakers (AVB)

1 Scope

1.1 General

This Standard covers atmospheric vacuum breakers (AVB).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.1.2:YY

Pressure vacuum breakers (PVB)

1 Scope

1.1 General

This Standard covers pressure vacuum breakers (PVB).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.1.3:YY

Spill-resistant pressure vacuum breakers (SRPVB)

1 Scope

1.1 General

This Standard covers spill-resistant pressure vacuum breakers (SRPVB).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.1.4:YY

Vacuum breaker, air space type (ASVB)

1 Scope

1.1 General

This Standard covers manufactured vacuum breakers, air space type (ASVB).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.2:YY

Hose connection vacuum breakers (HCVB)

1 Scope

1.1 General

This Standard covers hose connection vacuum breakers (HCVB).

1.2 Draining feature type

CSA B64.2.1 and CSA B64.2.1.1 cover HCVB and HCDVB devices, respectively, that incorporate a manual draining feature, while CSA B64.2.2 covers HCVB devices that incorporate an automatic draining feature.

1.3 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.4 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.2.1:YY

Hose connection vacuum breakers (HCVB) with manual draining feature

1 Scope

1.1 General

This Standard covers hose connection vacuum breakers (HCVB) that incorporate a draining feature that requires manual operation.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.2.1.1:YY

Hose connection dual check vacuum breakers (HCDVB)

1 Scope

1.1 General

This Standard covers hose connection vacuum breakers that have two check valves (HCDVB) and that incorporate a draining feature that requires manual operation. The second (downstream) check valve is field-testable.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.2.2:YY

Hose connection vacuum breakers (HCVB) with automatic draining feature

1 Scope

1.1 General

This Standard covers hose connection vacuum breakers (HCVB) that incorporate an automatic draining feature that does not require manual operation.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

 

CSA B64.3:YY

Dual check valve backflow preventers with atmospheric port (DCAP)

1 Scope

1.1 General

This Standard covers dual check valve backflow preventers with an atmospheric port (DCAP).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.3.1:YY

Dual check valve backflow preventers with atmospheric port for carbonators (DCAPC)

1 Scope

1.1 General

This Standard covers dual check valve backflow preventers with an atmospheric port for carbonators (DCAPC).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.4:YY

Reduced pressure principle (RP) backflow preventers

1 Scope

1.1 General

This Standard covers reduced pressure principle (RP) backflow preventers.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.5:YY

Double check valve (DCVA) backflow preventers

1 Scope

1.1 General

This Standard covers double check valve (DCVA) backflow preventers.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.6:YY

Dual check valve (DuC) backflow preventers

1 Scope

1.1 General

This Standard covers dual check valve (DuC) backflow preventers.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.6.1:YY

Dual check valve backflow preventers for fire protection systems (DuCF)

1 Scope

1.1 General

This Standard covers dual check valve backflow preventers designed for use in fire protection systems (DuCF).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.7:YY

Laboratory faucet vacuum breakers (LFVB)

1 Scope

1.1 General

This Standard covers vacuum breakers for use on laboratory faucets.

1.2 Intended installation

Laboratory faucet vacuum breakers (LFVB) covered by this Standard are intended to be installed on the discharge side of the last control valve and are not intended for use under constant pressure conditions.

1.3 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.4 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.8:YY

Dual check valve backflow preventers with intermediate vent (DuCV)

1 Scope

1.1 General

This Standard covers dual check valve backflow preventers with an intermediate vent (DuCV).

Note: These devices are designed to be used on individual outlets or appliances with flow rates of 0.25 L/s or less.

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).

 

CSA B64.9:YY

Single check valve backflow preventers for fire protection systems (SCVAF)

1 Scope

1.1 General

This Standard covers single check valve backflow preventers specifically designed for use in fire protection systems (SCVAF).

1.2 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with each Standard in the Series; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standards in the Series.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.3 Units

This Standard is written in SI units, which are the units of record for the purposes of this Standard.

For conversion tables, see Annex A of CSA B64.0. Vacuum is expressed in pressure below ambient. All pipe sizes are shown as nominal pipe sizes (NPS).