Jafar 2911 Manuale di funzionamento e manutenzione - Pagina 6
Sfoglia online o scarica il pdf Manuale di funzionamento e manutenzione per Unità di controllo Jafar 2911. Jafar 2911 10. Flanged gate valves with soft seals
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Stampa la pagina2.4 REFERENCE STANDARDS
EN 1074-1
EN 1074-2
89/H-02650
EN 1092-2
EN19
EN 12266-1
EN 558
EN ISO 5210
EN ISO 6708
EN 1559-1
EN 1561
EN 1563
EN 1370
EN 10088-1
74/H-84032
EN 1982
EN 12420
ISO 965-1
ISO 2903
EN ISO 4762
EN 10204
ISO 1629
EN ISO 1873-1
EN ISO 1874-1
EN ISO 12944-5
2.5 ORDERING INFORMATION
Water supply system fittings are specific purpose industrial fittings, therefore orders must include:
- part number (P/N, equal to the product type);
- intended use, e.g. for water supply systems,
and:
- nominal diameter, acc. to EN ISO 6708
- nominal pressure, acc. to 89/H-02650;
- type of body material — acc. to EN 1561 or EN 1563
- maximum operating temperature, acc. to 89/H-02650.
2.6 PRODUCTION AND ACCEPTANCE
Type 2902 and 2911 drive-ready flanged gate valves with soft seals are accepted and produced in
accordance with EN 1074-2 (Valves for water supply. Fitness for purpose requirements and appropriate
verification tests. Isolating valves) and EN 12266-1 (Industrial valves. Testing of valves). All gate valves are leak
tested (100%). The tests include external body tightness and closing tightness.
Valves for water supply. Fitness for purpose requirements and appropriate
verification tests. General requirements
Valves for water supply. Fitness for purpose requirements and appropriate
verification tests. Isolating valves.
Valves and pipelines. Pressure and temperature ratings.
Flanges and their joints. Circular flanges for pipes,
valves, fittings and accessories, PN designated. Cast iron flanges.
Industrial valves. Marking of metallic valves
Industrial valves. Testing of metallic valves. Pressure tests, test procedures
and acceptance criteria. Mandatory requirements.
Industrial valves. Face-to-face and centre-to-face dimensions of metal valves
for use in flanged pipe systems. PN-designated valves.
Industrial valves. Multi-turn valve actuator attachments.
Pipework components. Definition and selection of DN (nominal size).
Founding. Technical conditions of delivery. General.
Founding. Grey cast irons.
Founding. Spheroidal graphite cast irons.
Founding. Surface roughness inspection by
visual tactile comparators.
Stainless steels. List of stainless steels.
Spring steel. Grades.
Copper and copper alloys. Ingots and castings.
Copper and copper alloys. Forgings.
General purpose ISO metric threads. Tolerances. Principles and basic data.
Trapezoid ISO metric threads. Tolerances.
Hexagon socket head cap screws.
Metallic products. Types of inspection documents.
Rubbers and latices. Nomenclature.
Plastics. Polypropylene (PP) moulding and extrusion materials. Designation
system and basis for specifications.
Plastics. Polyamide (PA) moulding and extrusion materials. Designation
system and basis for specification.
Paints and varnishes. Corrosion protection of steel structures by protective
paint systems. Protective painting systems.
OPERATION AND MAINTENANCE MANUAL
12-2016
6