ISO 10434-2004 rus PDF

Full title and description

ISO 10434:2004 — Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries. This International Standard specifies requirements for heavy‑duty bolted‑bonnet steel gate valves used in refinery, petrochemical and related services, including construction features, sizes and pressure classes.

Abstract

ISO 10434:2004 defines design, materials and construction requirements for a heavy‑duty series of bolted bonnet steel gate valves (features include bolted bonnet construction, outside screw and yoke, rising or non‑rising stems, single or double gate, wedge or parallel seating, metallic seats, and flanged or butt‑welding ends). It covers nominal sizes DN 25–600 (NPS 1–24) and pressure class designations 150, 300, 600, 900, 1500 and 2500.

General information

• Status: Withdrawn (superseded by a later edition).
• Publication date: July 2004 (2004‑07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.180.20 (Processing equipment; industrial valves).
• Edition / version: Edition 2 (2004).
• Number of pages: 30.

Scope

This standard applies to heavy‑duty bolted‑bonnet steel gate valves intended for petroleum refineries, petrochemical plants and allied industries where full‑port openings, heavy wall sections and large stem diameters are required. It specifies dimensional, mechanical and material requirements, and is applicable to valves with flanged or butt‑welding ends across the nominal sizes and pressure classes listed above.

Key topics and requirements

• Design types covered: bolted bonnet; outside screw and yoke; rising stems and non‑rising handwheels.
• Gate options: single or double gate; wedge or parallel seating arrangements.
• Seating and materials: metallic seating surfaces and specified material grades for bodies, gates and stems.
• End connections: flanged ends or butt‑welding ends with specified dimensional and pressure requirements.
• Sizes and pressure classes: DN 25–600 (NPS 1–24); pressure Class 150–2500 (as listed in the standard).

Typical use and users

Used by valve manufacturers, piping and mechanical design engineers, refinery and petrochemical plant engineers, procurement specialists, inspection and testing organizations, and standards/quality assurance teams specifying or verifying heavy‑duty gate valves for high‑pressure or erosive/corrosive services.

Related standards

ISO 10434:2004 has been revised and replaced by ISO 10434:2020 (new edition published 2020). Normative and informative references related to valve threads and testing (for example various ASME and ISO valve/threads standards) are cited within the text of the standard; users should consult the 2020 edition and national adoptions for up‑to‑date normative references and harmonized (EN) versions.

Keywords

gate valve, bolted bonnet, steel gate valve, petroleum valves, petrochemical valves, flanged ends, butt‑welding ends, rising stem, valve standard, ISO 10434.

FAQ

Q: What is this standard?

A: ISO 10434:2004 is an International Standard specifying requirements for heavy‑duty bolted‑bonnet steel gate valves intended for the petroleum, petrochemical and allied industries.

Q: What does it cover?

A: It covers construction features, materials, dimensions and performance considerations for bolted bonnet steel gate valves, including sizes DN 25–600 and pressure classes 150–2500, and options such as single/double gate and wedge/parallel seating.

Q: Who typically uses it?

A: Valve manufacturers, plant and piping engineers, procurement teams, inspection/test houses and standards committees involved with specifying or verifying heavy‑duty gate valves for refinery, petrochemical and similar services.

Q: Is it current or superseded?

A: The 2004 edition is withdrawn and has been superseded by ISO 10434:2020. Users who need a current normative reference should use the 2020 edition or check national adoptions for the latest status.

Q: Is it part of a series?

A: It is part of the family of ISO standards on industrial valves maintained by ISO/TC 153; related valve standards address low‑temperature service, cryogenic valves and testing/production requirements. Consult the ISO 10434:2020 edition and ISO technical committee publications for the full set of related standards.

Q: What are the key keywords?

A: Gate valve, bolted bonnet, petroleum, petrochemical, heavy‑duty valve, flanged ends, butt‑welding ends, rising stem, metallic seating, ISO 10434.