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eLibrary > BS EN 334:2019 - TC Tracked Changes. Gas pressure regulators for inlet pressure up to 10 MPa (100 bar) >

BS EN 334:2019 - TC Tracked Changes. Gas pressure regulators for inlet pressure up to 10 MPa (100 bar), 2020

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BS EN 334:2019 - TC Tracked Changes. Gas pressure regulators for inlet pressure up to 10 MPa (100 bar), 2020

Warning
Compliance with a British Standard cannot confer immunity from legal obligations.
Amendments/corrigenda issued since publication
ForewordEuropean foreword [Go to Page]
1 Scope
2 Normative references
3 Terms and definitions and symbols [Go to Page]
3.1 General terms and definitions of types of gas pressure regulators [Go to Page]
3.1.1
3.1.2
a) Direct acting regulators – Type Integral Strength
Figure 1 — Examples of a direct acting regulator
Figure 2 — Example of a pilot controlled regulator
Figure 3 — Example of a pilot controlled regulator with a diaphragm as control member
3.1.5
3.1.63.1.5
3.1.6
3.1.7
3.1.8
3.2 Terms and definitions of components of gas pressure regulators [Go to Page]
3.2.1
3.2.1.1
3.2.1.2
3.2.1.3
3.2.1.4
3.2.1.5
3.2.1.6
3.2.1.7
3.2.1.8
3.2.1.9
3.2.1.93.2.1.10
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.3 Terms, symbols and definitions of components ofrelated to functional performance [Go to Page]
3.3.1 Terms, symbols and definitions related to pressure
3.3.1.1
3.3.1.13.3.1.2
3.3.1.23.3.1.3
3.3.1.3 3.3.1.4
3.3.1.43.3.1.5
3.3.1.53.3.1.6
3.3.1.7
3.3.2 Terms, symbols and definitions related to flow
3.3.2.1
3.3.2.1.1 3 .3.2.2
gas volume
3.3.2.1.2 3.3.2.3
3.3.2.4
3.3.2.5
3.3.2.6
Note 2 to entry: The KG value is specified in (m3/h)/bar.
3.3.3 Sound emission
3.3.4 Variables in the controlling process
3.3.4.2
3.3.5 Terms and definitions related to possible values of all variables
3.3.5.1
3.3.5.2
3.3.5.3
3.3.6 Terms, symbols and definitions related to the controlled process
3.3.6.1
3.3.6.2
3.3.6.3
3.3.6.4
3.3.7 Terms, symbols and definitions of functional performance [Go to Page]
3.3.7.1
3.3.7.2
3.3.7.3
Figure 4 — Performance curve (pds constant, pu constant)
Figure 5 — Family of performance curves (pds constant)
3.3.8.2
3.3.8.3
3.3.8.4
Figure 6 — Family of performance curves indicating maximum accuracy flow rates and minimum flow rates (pds constant, stable conditions)
3.3.9 Terms, symbols and definitions related to lock-up behaviour
3.3.9.1
3.3.9 Terms, symbols and definitions related to lock-up behaviour
3.3.9.2
3.3.9.3
3.3.9.4
3.3.9.5
3.3.9.6
Figure 6Figure 7 — Performance curve indicating lock-up pressure zone (stable condition)
3.4 Terms, symbols and definitions related to design and tests [Go to Page]
3.4.2
3.4.3
3.4.4
3.4.5
3.4.53.4.6
3.4.63.4.7
3.4.73.4.8
3.4.83.4.9
3.4.93.4.10
3.4.103.4.11
3.4.113.4.12
3.4.13
3.4.123.4.14
3.4.15
3.4.16
3.5 Summary of symbols, terms, subclauses and units
4 Construction requirements [Go to Page]
4.1 Basic requirements [Go to Page]
4.1.1 General
4.1.2 Gas pressure regulators with associated safety devices
4.1.2.2 Gas pressure regulators with in-line monitor
4.1.2.3 Gas pressure regulator with in-line safety shut off device
4.1.3 End connections
4.1.4 Flange ratings
4.1.5 Nominal sizes and face-to-face dimensions
Table 1 — Recommended face-to face dimensions for flanged regulatorsbodies
4.1.6 Sealing of the adjusting device
4.1.7 Springs
4.1.8 Parts transmitting actuating forces
4.1.84.1.9 Replaceable parts that may be affected by erosion or abrasion
4.2 Materials [Go to Page]
4.2.1 Requirements for metallic materials
4.2.1.2 Auxiliary devices, integral process and sensing lines, connectors, threaded sealing plug and fasteners
4.2.1.3 Other parts
4.2.1.24.2.1.4
Table 5 — Materials
4.2.1.6.1 Welding requirements
4.2.1.6.2 Material traceability
4.2.1.64.2.1.7 Non-destructive testing (NDT)
4.2.1.7.2 Non-destructive testing of fabrication welds
4.2.1.7.3 Qualification of personnel for non-destructive testing
Table 6 — Non-destructive testing
4.2.3 Requirements for non-metallic materials different from those in 4.2.2
Table 8 — Requirements for non-metallic materials different than those in 4.2.2
4.3.2 Flanges
Pressure containing bearing parts group I)
Pressure containing bearing parts group II)
Pressure containing bearing parts group III)
4.3.3.24.3.4 Integral strength pressure regulators9)
4.3.4 4.3.6 Inner metallic partition walls
4.3.54.3.7 Minimum values of safety factor for pressure bearing parts
Table 9 — Minimum values of safety factor
5 Functional and characteristic requirements [Go to Page]
5.1 General [Go to Page]
5.1.1 Mounting position
5.2 Shell strength, external tightness and internal sealing [Go to Page]
5.2.1 Shell strength
5.2.2 External tightness
5.2.3 Internal sealing
5.3 Control classifications [Go to Page]
5.3.1 Accuracy under stable conditions
Table 10 — Accuracy classes
5.3.1.2 Hysteresis
5.3.2 Lock-up behaviour
Table 11 — Lock-up pressure classes
5.3.2.2 Classes of lock-up pressure zone
Table 12 — Lock-up pressure zone classes
5.3.3 Stable conditions
5.4 Final visual inspection [Go to Page]
5.4.1 Requirements for final visual inspection after type tests
5.4.2 Requirements for final visual inspection after routine tests and production surveillance
5.5 Fail close conditions
5.6 Fail open conditions
5.7 Closing force for monitor at full open position
5.8 Antistatic characteristics
6 Gas pressure regulator sizing [Go to Page]
6.1 Flow behaviour [Go to Page]
Figure 8 — Flow behaviour of a regulator with the control member in a fixed position
6.2.2 Practical calculations
6.2.3 Simplified calculations
6.3 Calculation of the maximum accuracy flow rate
6.4 Inherent flow characteristics
6.5 Calculation of volumetric flow rates for partially open gas pressure regulators [Go to Page]
Figure 9 — Three examples of inherent flow characteristics
7 Testing [Go to Page]
7.1 General
7.2 Tests [Go to Page]
Table 13 — Summary of tests and requirements
7.4 Selection of test samples
7.5 Routine tests
7.6 Production surveillance
7.7 Test and verification methods [Go to Page]
7.7.1 Dimensional check and visual inspection
7.7.2 Materials check
7.7.3 Verification of the strength of pressure containingbearing parts and, inner metallic partition walls and other parts14)
7.7.3.2 Verification of experimental design method for metallic parts
7.7.3.3 Verification of the strength of parts transmitting actuating forces
7.7.4 Shell and inner metallic partition walls strength test
Table 14 — Pressure values for the shell strength test
7.7.5 Alternative shell and inner metallic partition walls strength test
7.7.6 Verification of closing force for monitor in fully open position under normal operating conditions
7.7.6 7.7.7 External tightness test
Table 15 — Pressure values in the external tightness test
7.7.8 Test method and acceptance criteria to verify the antistatic characteristics
7.7.7.7.7.9 Functional tests
7.7.7.1 7.7.9.1 General conditions
7.7.7.2 7.7.9.2 Determination of the flow coefficients
7.7.7.2.17.7.9.2.1 Normal method
7.7.7 9.2.2 Practical method for Cg flow coefficient and K1 body shape factor
7.7.7 9.2.3 Test method for KG flow coefficient
7.7.7.37.7.9.3 Check of internal sealing, set point, and lock-up pressure class and simplified test method for accuracy class
7.7.7.4.17.7.9.4.1 General conditions
7.7 7.4.2 7.7.9.4.2 Determination of a performance curve and verification of the hysteresis band
7.7.7.4.37.7.9.4.3 Determination of the lock-up pressure and verification of the internal sealing
Figure 11 — Graphical representation of tests detailed in 7.7.7.4.37.7.9.4.3
7.7.9.4.4 Performance classification of pressure regulators
7.7.9.4.4.2 Determination of the accuracy class, the lock-up pressure class, the class of lock-up pressure zone, the maximum accuracy flow rate and the minimum flow rate related to a specified inlet pressure range and set range (more than one family o...
7.7.9.4.5 Operational check at the limit temperatures of –20 C or –10 C 10 C or –20 C and 60 C
7.7.7.4.6 Methods for measuring the sound pressure level
7.7.7.4.77.7.9.4.6 Test rig requirements
Figure 13 — Recommended pressure tapping
Figure 14 — Test rig requirements
7.7.8 7.7.10 final visual inspections
7.7.8.2 7.7.10.2 AfterFinal visual inspection after routine tests and production surveillance
8 Documentation Field surveillance
9 Documentation [Go to Page]
8.1 9.1 Documentation related to type test [Go to Page]
8.1.1 9.1.1 Documentation required prior to type test
8.1.29.1.2 Test report
8.29.2 Documentation related to the routine tests
8.2.29.3 Documentation provided with the regulator related to production surveillance in accordance with 7.6 [Go to Page]
9.3.1 Documentation for production surveillance
9.3.2 Production surveillance report
9.4 Operating instructions [Go to Page]
8.3 Documentation related to production surveillance in accordance with 7.6
910 Marking [Go to Page]
9.110.1 General requirements
10.2 Basic requirements
10.3 Other additional requirements
10.4 Marking of integrated safety devices
9.210.5 Markings for the various connections [Go to Page]
9.3 Marking of integrated safety devices
11 Packaging of finished product
Annex A [Go to Page]
(informative) [Go to Page]
A.1 General
A.2 Test methods [Go to Page]
A.2.1 Direct acting gas pressure regulator
A.2.2 Pilot controlled gas pressure regulators
A.3 Determination of flow coefficients for larger capacity regulators [Go to Page]
Figure A.1 — Graph of the outlet pressure plotted against different positions of the control member in a balanced direct acting regulator
Figure A.2 — Graph of the outlet pressure plotted against different positions of the control member in an unbalanced direct acting regulator
Figure A.3 — Functional diagram of a pilot controlled regulator
Figure A.4 — Graphs relating to the tests detailed in A.2 for a balanced pilot controlled regulator
Figure A.5 — Graphs relating to the tests detailed in A.2 for an unbalanced pilot controlled regulator
Figure A.6 — Graph of Cg values plotted against different positions of the control member
Annex C [Go to Page]
(informative)
Annex D [Go to Page]
(informative) [Go to Page]
D.1 General
D.2 Introduction
D.3 Procedure
D.4 Manufacturer’s compliance evaluation
D.5 Issue of the certificate of compliance
Annex E [Go to Page]
(informative)
(normative) [Go to Page]
F.1E.1 General
F.2E.2 Terms and definitions [Go to Page]
F.2.1E.2.1
F.2.2E.2.2
F.3E.3 Requirements [Go to Page]
F3.1E.3.1 Construction
F.3.2E.3.2 Functional requirements
F.4E.4 Testing
F.6E.6 Routine tests
F.7E.7 Documentation
When the regulator is or can be equipped with a creep relief device this should device shall be mentioned in the test report.
Annex G Annex F [Go to Page]
(informative) [Go to Page]
G.1F.1 General
G.2F.2 Minimum specifications [Go to Page]
G2.1F.2.1 Details of construction
G.2.2F.2.2 Dimensions
G.2.3F.2.3 Performance
G.3F.3 Optional specifications [Go to Page]
Table H.1 – Steel materials for pressure containing parts and inner metallic partition walls [Go to Page]
Table H.2 - Metallic materials different from steel materials for pressure containing parts and inner metallic partition walls
Table G.2 — Metallic materials different from steel materials for pressure bearing parts and inner metallic partition walls
H.3G.3 Materials for fixturesauxiliary devices, integral process and sensing lines, threaded sealing plug, connectors and fasteners [Go to Page]
Table H.3 - Materials for fixtures, integral process and sensing lines, connectors and fasteners
Table G.3 — Materials for auxiliary devices, integral process and sensing lines, connectors and fasteners
G.4Update to year 2017 on Metallic Material Standards used in the previous editions of this standard [Go to Page]
Table G.4 — Update on Metallic Material Standards
H.1 General
H.2 Test method for the determination of the dynamic factor Cr [Go to Page]
H.2.1 General
H.2.2 Test method for the determination of the dynamic factor Cr for a series of monitor [Go to Page]
Figure H.1 — Model for dynamic force test method
I.1 General
I.2 Scope
I.3 Terms, symbols and definitions [Go to Page]
I.3.1
I.3.2
I.3.3
I.4 Requirements [Go to Page]
I.4.1 General requirements
I.4.2 Materials
I.4.3 Strength
I.4.4 Functional requirements
I.5 Testing and acceptance criteria [Go to Page]
I.5.1 General
I.5.2 Type test method
I.6 Documentation
I.7 Specific marking on vent limiter
Annex J [Go to Page]
(normative) [Go to Page]
Table J.1 — Minimum characteristics of vulcanized rubbers used in manufacturing of rubber components
K.1 Sound emission requirements [Go to Page]
Figure K.1 — Points of measurement for sound pressure level
K.2 Methods for measuring the sound pressure level
Annex L [Go to Page]
(informative) [Go to Page]
Table L.1 — Environmental provisions - Inputs
Annex M [Go to Page]
(informative) [Go to Page]
Table M.1 — Glossary
Annex ZA [Go to Page]
(informative) [Go to Page]
Table ZA.1 — Correspondence between this European Standard and Annex I of the Directive 2014/68/EU
Bibliography
30334288_NEW.pdf [Go to Page]
undefined
1 Scope
2 Normative references
3 Terms and definitions [Go to Page]
3.1 General terms and definitions of types of gas pressure regulators
3.2 Terms and definitions of components of gas pressure regulators
3.3 Terms, symbols and definitions related to functional performance [Go to Page]
3.3.1 Terms, symbols and definitions related to pressure
3.3.2 Terms, symbols and definitions related to flow
3.3.3 Sound emission
3.3.4 Variables in the controlling process
3.3.5 Terms and definitions related to possible values of all variables
3.3.6 Terms, symbols and definitions related to the controlled process
3.3.7 Terms, symbols and definitions of functional performance
3.3.8 Feature related to accuracy
3.3.9 Terms, symbols and definitions related to lock-up behaviour
3.4 Terms, symbols and definitions related to design and tests
3.5 Summary of symbols, terms, subclauses and units
4 Construction requirements [Go to Page]
4.1 Basic requirements [Go to Page]
4.1.1 General
4.1.2 Gas pressure regulators with associated safety devices [Go to Page]
4.1.2.1 Gas pressure regulators with integrated safety devices
4.1.2.2 Gas pressure regulators with in-line monitor
4.1.2.3 Gas pressure regulator with in-line safety shut off device
4.1.3 End connections
4.1.4 Flange ratings
4.1.5 Nominal sizes and face-to-face dimensions
4.1.6 Sealing of the adjusting device
4.1.7 Springs
4.1.8 Parts transmitting actuating forces
4.1.9 Replaceable parts that may be affected by erosion or abrasion
4.2 Materials [Go to Page]
4.2.1 Requirements for metallic materials [Go to Page]
4.2.1.1 Pressure bearing parts and inner metallic partition walls
4.2.1.2 Auxiliary devices, integral process and sensing lines, connectors, threaded sealing plug and fasteners
4.2.1.3 Other parts
4.2.1.4 Material inspection documents of pressure bearing parts and inner metallic partition walls
4.2.1.5 Material inspection documents of fasteners and connectors
4.2.1.6 Manufacturing requirements
4.2.1.7 Non-destructive testing (NDT)
4.2.2 Requirements for elastomeric materials (vulcanized rubber materials)
4.2.3 Requirements for non-metallic materials different from those in 4.2.2
4.3 Strength of housings and other parts [Go to Page]
4.3.1 Body
4.3.2 Flanges
4.3.3 Other pressure bearing parts
4.3.4 Integral strength pressure regulators)
4.3.5 Differential strength pressure regulators)
4.3.6 Inner metallic partition walls
4.3.7 Minimum values of safety factor for pressure bearing parts
4.3.8 Welded joint coefficient
4.3.9 Design requirements for strength of elastomeric parts
5 Functional and characteristic requirements [Go to Page]
5.1 General [Go to Page]
5.1.1 Mounting position
5.2 Shell strength, external tightness and internal sealing [Go to Page]
5.2.1 Shell strength
5.2.2 External tightness
5.2.3 Internal sealing
5.3 Control classifications [Go to Page]
5.3.1 Accuracy under stable conditions [Go to Page]
5.3.1.1 Accuracy classes
5.3.1.2 Hysteresis
5.3.2 Lock-up behaviour [Go to Page]
5.3.2.1 Lock-up pressure classes
5.3.2.2 Classes of lock-up pressure zone
5.3.3 Stable conditions
5.4 Final visual inspection [Go to Page]
5.4.1 Requirements for final visual inspection after type tests
5.4.2 Requirements for final visual inspection after routine tests and production surveillance
5.5 Fail close conditions
5.6 Fail open conditions
5.7 Closing force for monitor at full open position
5.8 Antistatic characteristics
6 Gas pressure regulator sizing [Go to Page]
6.1 Flow behaviour
6.2 Sizing equations for the calculation of volumetric flow rates of a gas pressure regulator with its control member in its mechanically fully open position [Go to Page]
6.2.1 Normal calculations
6.2.2 Practical calculations
6.2.3 Simplified calculations
6.3 Calculation of the maximum accuracy flow rate
6.4 Inherent flow characteristics
6.5 Calculation of volumetric flow rates for partially open gas pressure regulators
6.6 Flow coefficient
7 Testing [Go to Page]
7.1 General
7.2 Tests
7.3 Type test
7.4 Selection of test samples
7.5 Routine tests
7.6 Production surveillance
7.7 Test and verification methods [Go to Page]
7.7.1 Dimensional check and visual inspection
7.7.2 Materials check
7.7.3 Verification of the strength of pressure bearing parts, inner metallic partition walls and other parts) [Go to Page]
7.7.3.1 Strength calculation method for metallic parts
7.7.3.2 Verification of experimental design method for metallic parts
7.7.3.3 Verification of the strength of parts transmitting actuating forces
7.7.3.4 Verification of strength of diaphragm used as pressure containing parts
7.7.4 Shell and inner metallic partition walls strength test
7.7.5 Alternative shell and inner metallic partition walls strength test
7.7.6 Verification of closing force for monitor in fully open position under normal operating conditions
7.7.7 External tightness test [Go to Page]
7.7.7.1 External tightness test of metallic housing
7.7.7.2 External tightness test of chambers bounded on at least one side by a diaphragm
7.7.8 Test method and acceptance criteria to verify the antistatic characteristics
7.7.9 Functional tests [Go to Page]
7.7.9.1 General conditions
7.7.9.2 Determination of the flow coefficients
7.7.9.3 Check of internal sealing and lock-up pressure class
7.7.9.4 Functional tests under stable conditions
7.7.9.5 Method to prove the compliance with requirements detailed in subclauses 5.5 or 5.6
7.7.10 Final visual inspections [Go to Page]
7.7.10.1 Final visual inspection after type test
7.7.10.2 Final visual inspection after routine tests and production surveillance
8 Field surveillance
9 Documentation [Go to Page]
9.1 Documentation related to type test [Go to Page]
9.1.1 Documentation required prior to type test
9.1.2 Test report
9.2 Documentation related to the routine tests
9.3 Documentation related to production surveillance in accordance with 7.6 [Go to Page]
9.3.1 Documentation for production surveillance
9.3.2 Production surveillance report
9.4 Operating instructions
10 Marking [Go to Page]
10.1 General requirements
10.2 Basic requirements
10.3 Other additional requirements
10.4 Marking of integrated safety devices
10.5 Markings for the various connections
11 Packaging of finished product
Annex A (informative)Alternative methods for the determination of the accuracy class, the lock-up pressure class, the maximum accuracy flow rate, the flow coefficients and the verification of the hysteresis band [Go to Page]
A.1 General
A.2 Test methods [Go to Page]
A.2.1 Direct acting gas pressure regulator
A.2.2 Pilot controlled gas pressure regulators
A.3 Determination of flow coefficients for larger capacity regulators
Annex B (informative)Inspection certificate
Annex C (informative)Acceptance test
Annex D (informative)Compliance evaluation ) [Go to Page]
D.1 General
D.2 Introduction
D.3 Procedure
D.4 Manufacturer’s compliance evaluation
D.5 Issue of the certificate of compliance
Annex E (normative)Creep (venting) relief device [Go to Page]
E.1 General
E.2 Terms and definitions
E.3 Requirements [Go to Page]
E.3.1 Construction
E.3.2 Functional requirements
E.4 Testing
E.5 Type test
E.6 Routine tests
E.7 Documentation
E.8 Marking
Annex F (informative)Order specification [Go to Page]
F.1 General
F.2 Minimum specifications [Go to Page]
F.2.1 Details of construction
F.2.2 Dimensions
F.2.3 Performance
F.3 Optional specifications
Annex G (informative)Materials [Go to Page]
G.1 Steel materials for pressure bearing parts and inner metallic partition walls
G.2 Metallic materials different from steel materials for pressure bearing parts and inner metallic partition walls
G.3 Materials for auxiliary devices, integral process and sensing lines, threaded sealing plug, connectors and fasteners
G.4 Update to year 2017 on Metallic Material Standards used in the previous editions of this standard
Annex H (informative)Dynamic force calculation method [Go to Page]
H.1 General
H.2 Test method for the determination of the dynamic factor Cr [Go to Page]
H.2.1 General
H.2.2 Test method for the determination of the dynamic factor Cr for a series of monitor
Annex I (normative)Vent limiter [Go to Page]
I.1 General
I.2 Scope
I.3 Terms, symbols and definitions
I.4 Requirements [Go to Page]
I.4.1 General requirements
I.4.2 Materials
I.4.3 Strength
I.4.4 Functional requirements
I.5 Testing and acceptance criteria [Go to Page]
I.5.1 General
I.5.2 Type test method
I.6 Documentation
I.7 Specific marking on vent limiter
Annex J (normative)Elastomeric material
Annex K (informative)Sound emission [Go to Page]
K.1 Sound emission requirements
K.2 Methods for measuring the sound pressure level
Annex L (informative)Environmental Provisions
Annex M (informative)Glossary
Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered [Go to Page]

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BS EN 334:2019 - TC Tracked Changes. Gas pressure regulators for inlet pressure up to 10 MPa (100 bar), 2020

⨯To continue with accurate pricing,
please select your company type below: