NS EN ISO 15761 : 1ED 2003
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
STEEL GATE, GLOBE AND CHECK VALVES FOR SIZES DN 100 AND SMALLER, FOR THE PETROLEUM AND NATURAL GAS INDUSTRIES
30-09-2020
12-01-2013
1 Scope
2 Normative references
3 Terms and definitions
4 Pressure/temperature ratings
4.1 Valve ratings
4.2 Temperature constraints
5 Design
5.1 Reference design
5.2 Flow passageway
5.3 Wall thickness
5.4 Valve body
5.5 Valve bonnet or cover
5.6 Obturator
5.7 Stem
5.8 Stem nut or stem bushing
5.9 Packing, packing chamber and gland
5.10 Packing retention
5.11 Hand wheel
6 Materials
6.1 Trim materials
6.2 Materials other than trim
7 Marking
7.1 Legibility
7.2 Body marking
7.3 Ring joint groove marking
7.4 Identification plate marking
8 Testing and inspection
8.1 Pressure tests
8.2 Inspection
9 Preparation for despatch
Annexes
A Requirements for extended body gate valve bodies
B Requirements for valves with bellows stem seals
C Type testing of bellows stem seals
D Identification of valve parts
E Information to be specified by the purchaser
Bibliography
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