GOST 4666-2015 PDF

Full title and description

GOST 4666-2015 — Pipeline valves. Requirements for the marking. This interstate standard specifies marking information and marking locations for pipeline valves and associated actuation devices to support identification, safe operation and traceability.

Abstract

GOST 4666-2015 defines the mandatory and recommended marking elements (such as designation, nominal diameter, pressure rating, material, manufacturer identification and directional/operational markings), guidance on marking locations and formats for pipeline valves, and provisions for valves with small nominal sizes where marking space is limited. The standard replaces earlier national versions and consolidates marking requirements for pipeline valves used across member states of the GOST system.

General information

• Status: Active / in force.
• Publication date: Designation year 2015; introduced / published 1 March 2017 (entry into force 01.03.2017).
• Publisher: Issued as a GOST (interstate) standard under the GOST system (EASC/GOST national bodies); original language Russian.
• ICS / categories: 23.060.01 — Fluid systems and components; valves.
• Edition / version: GOST 4666-2015 (current edition). Some catalog entries note implemented amendments/corrections referenced in supplier listings.
• Number of pages: 28 pages (typical published PDF/print edition).

Scope

The standard applies to pipeline valves and their actuators and sets out requirements for the content, format and placement of markings required for identification, operational safety and traceability. It covers general marking elements applicable across valve types and includes specific provisions for small-diameter valves (where marking area is restricted), but does not replace detailed product or material specifications that remain subject to separate normative documents.

Key topics and requirements

• Mandatory marking elements: designation/type, nominal diameter (DN), pressure rating (PN or class), material or material code, serial or batch number, manufacturer identification and year of manufacture.
• Recommended additional markings: flow direction arrows, actuation type (manual/electric/pneumatic), special instructions or cautions, paint/colour coding where applicable.
• Placement and legibility: prescribed locations on valve bodies or nameplates, minimum character sizes and methods for durable marking (casting, stamping, plates, laser etching) including special rules for DN ≤ 50 where space is limited.
• Traceability and documentation: linking markings to manufacturer records and certificates to support inspection, maintenance and warranty processes.
• Compatibility with related normative references and material/pressure standards cited in the normative references section of the standard.

Typical use and users

Primary users include valve manufacturers, foundries and fabricators, procurement and quality departments, inspection and testing organizations, plant operators (oil & gas, petrochemical, water and utility systems), design engineers and regulatory bodies responsible for equipment conformity and marking compliance.

Related standards

GOST 4666-2015 replaces the older GOST 4666-75 marking standard for valves. It references and interacts with other valve and material standards (examples cited in the normative references include standards on valve testing, materials and dimensional design that are typically listed in the normative references section of the text). Technical committee documents and subsequent amendments or change projects (e.g., project amendments identified by TC 259) also relate to this standard.

Keywords

Pipeline valves, valve marking, nameplate, identification, DN, PN, serial number, valve traceability, valve marking requirements, GOST, valves standard.

FAQ

Q: What is this standard?

A: GOST 4666-2015 is an interstate (GOST) standard titled "Pipeline valves. Requirements for the marking" that defines marking content, format and placement for pipeline valves.

Q: What does it cover?

A: It covers mandatory and recommended marking elements (designation, DN, pressure rating, material, manufacturer ID, serial number, flow direction, etc.), legibility and placement rules, and provisions for valves with limited marking area. It does not replace separate technical specifications for valve design or materials.

Q: Who typically uses it?

A: Valve manufacturers, quality and inspection personnel, procurement and plant operators, design engineers and regulatory bodies involved in conformity assessment and equipment traceability use this standard.

Q: Is it current or superseded?

A: GOST 4666-2015 is the current active edition and supersedes the earlier GOST 4666-75 marking standard. Some national registries show adoption/registration details for member states.

Q: Is it part of a series?

A: It is part of the body of GOST standards covering pipeline valves and fluid system components (ICS 23.060.01). It cross-references and complements other GOSTs and technical documents for valve design, materials and testing; it may be updated via amendments or change projects handled by the responsible technical committee (e.g., TC 259).

Q: What are the key keywords?

A: Valve marking, nameplate, DN, PN, serial number, manufacturer ID, pipeline valves, traceability, GOST 4666-2015.