ISO 10434:2020
Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries

Standard No.

ISO 10434:2020

Release Date

2020

Published By

International Organization for Standardization (ISO)

Latest

ISO 10434:2020

Scope

This document specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions can indicate a need for full port openings, heavy wall sections and large stem diameters. This document sets forth the requirements for the following gate valve features: — bolted bonnet; — outside screw and yoke; — rising stems; — non-rising handwheels; — single or double gate; — wedge or parallel seating; — metallic seating surfaces; — flanged or butt-welding ends. It covers valves of the nominal sizes DN: — 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600; corresponding to nominal pipe sizes NPS: — 1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24; applies for pressure Class designations: — 150; 300; 600; 900; 1500; 2500; and applies for pressure PN designations: — 16, 25, 40, 63, 100, 160, 250 and 400.

ISO 10434:2020 Referenced Document

• ASME B1.1 Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms)
• ASME B1.12 Class 5 Interfence-Fit Thread
• ASME B1.20.1 Pipe Threads@ General Purpose (Inch)
• ASME B1.5 Acme Screw Threads
• ASME B1.8 
• ASME B16.10 Face-to-Face and End-to End Dimensions of Valves*， 2022-06-20 Update
• ASME B16.11 Forged Fittings, Socket-Welding and Threaded*， 2024-04-22 Update
• ASME B16.25 Buttwelding Ends
• ASME B16.34 Valves Flanged, Threaded and Welding End
• ASME B16.5 Forged Nonferrous Fittings, SocketWelding and Threaded (Titanium, Titanium Alloys, Aluminum, and Aluminum Alloys)
• ASME B18.2.2 Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series) (B18.2.2 - 2010)
• EN 1092-1 Flanges and their joints - Circular flanges for pipes@ valves@ fittings and accessories@ PN designated - Part 1: Steel flanges
• ISO 15848-1 Industrial valves — Measurement, test and qualification procedures for fugitive emissions — Part 1: Classification system and qualification procedures for type testing of valves AMENDMENT 1
• ISO 15848-2 Industrial valves - Measurement, test and qualification procedures for fugitive emissions - Part 2: Production acceptance test of valves
• ISO 5208 Industrial valves - Pressure testing of metallic valves
• ISO 5209 General purpose industrial valves — Marking
• ISO 5210 Industrial valves — Multi-turn valve actuator attachments*， 2023-09-01 Update
• ISO 5752 Metal valves for use in flanged pipe systems - Face-to-face and centre-to-face dimensions*， 2021-06-01 Update
• ISO 7-1 Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation TECHNICAL CORRIGENDUM 1
• ISO 9606-1 Qualification testing of welders — Fusion welding — Part 1: Steels TECHNICAL CORRIGENDUM 1

ISO 10434:2020 history

• 2020 ISO 10434:2020 Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries
• 2004 ISO 10434:2004 Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries
• 1998 ISO 10434:1998 Bolted bonnet steel gate valves for petroleum and natural gas industries