GOST 23866-87 PDF

Full title and description

GOST 23866-87 — "Клапаны регулирующие односедельные, двухседельные и клеточные. Основные параметры" (English: Single-seated, double-seated and cage control valves. Basic parameters). A national (Soviet / Russian) standard that defines the basic parameters, application limits and principal technical data for single-seat, double-seat and cage-style control (regulating) valves intended for automatic regulation of technological processes.

Abstract

This standard establishes the main parameters and application boundaries for single-seated, double-seated and cage-type control valves used with pneumatic and electric actuators or remote control actuators. It specifies the intended usage, excluded applications (for example multistage valves, nuclear-plant valves, cryogenic valves and certain micro‑flow valves), and lays out key dimensional and performance parameters used for selection, specification and interchangeability.

General information

• Status: Active / In force (national GOST standard).
• Publication date: Approved 1987 (designation -87); came into force 01 January 1989 (common effective date used in repositories).
• Publisher: USSR State Committee for Standards (Gosstandart) — subsequently maintained within the Russian standards system (Rosstandart).
• ICS / categories: 23.060 — Valves (Fluid systems and components for general use).
• Edition / version: GOST 23866-87 (1987 edition), replacing the prior GOST 23866-79 edition.
• Number of pages: Small technical standard — typically published as a short leaflet (approximately 5–7 pages, depending on the publisher copy).

Scope

Applies to single-seat, double-seat and cage-design control (regulating) valves manufactured for automatic regulation of technological processes and configured for pneumatic or electric actuators and for remote-actuated control equipment. The standard sets basic parametric requirements and limits for use. It does not apply to multistage valves, valves specifically for nuclear power installations, valves intended for cryogenic service, valves made from non-ferrous metals (in some cases) or micro-flow valves with very low Kv (for example Kv < 0.1), unless otherwise stated in a purchaser agreement or other normative documents.

Key topics and requirements

• Definitions and classification of single-seated, double-seated and cage-type control valves.
• Main dimensional and performance parameters required for specification (nominal sizes, flow coefficients / Kv, pressure ratings and travel/ lift ranges).
• Intended actuator interfaces — pneumatic and electric actuator mounting and control signal considerations.
• Operating and service application limits (excluded service types such as multistage, nuclear, cryogenic and some micro‑flow applications).
• Requirements for marking, basic designation and interchangeability parameters used in procurement and documentation.
• Reference to related normative documents and technical conditions used in valve manufacture and testing.

Typical use and users

Used by valve manufacturers, product designers, instrumentation and control engineers, procurement and quality departments, plant engineers and technical specifiers in process industries (chemical, petrochemical, oil & gas, power generation, water treatment and general industrial automation) that require standardized parameter definitions for control valves within systems designed under Soviet/Russian national standards.

Related standards

Typical related documents include other GOST and technical specifications covering valve testing, materials, flanges and pipeline fittings, actuator interface standards and safety/pressure equipment standards. The 1987 edition replaced an earlier GOST 23866-79; implementers often consult accompanying GOSTs for valve flanges, pressure classes and testing methods when specifying complete assemblies.

Keywords

GOST 23866-87; control valve; regulating valve; single-seated valve; double-seated valve; cage valve; Kv; actuator interface; pneumatic actuator; electric actuator; valve parameters; pipeline valves; valves standard.

FAQ

Q: What is this standard?

A: GOST 23866-87 is a Soviet/Russian national standard that defines the basic parameters and application boundaries for single-seat, double-seat and cage-type control (regulating) valves.

Q: What does it cover?

A: It covers classification, principal parameters (such as sizes, flow coefficients and pressure-related limits), actuator interfaces (pneumatic and electric), intended applications for process control systems and explicit exclusions (for example multistage or some specialty service valves).

Q: Who typically uses it?

A: Valve manufacturers, instrumentation and control engineers, plant designers, procurement specialists and quality/certification personnel working in industries that use or specify equipment to Soviet/Russian GOST standards.

Q: Is it current or superseded?

A: The standard designation is GOST 23866-87 (approved 1987) and it is commonly listed as in force; it replaced an earlier 1979 edition. Users should check the current national standards registry or regulatory body for the authoritative status and any subsequent revisions or replacements before relying on it for compliance-critical work.

Q: Is it part of a series?

A: It belongs to the group of GOST standards covering pipeline and valve equipment (ICS 23.060) and is commonly used together with other GOSTs and technical specifications that address valve materials, flanges, testing and pressure-equipment requirements.

Q: What are the key keywords?

A: Control valve, regulating valve, single-seated, double-seated, cage valve, Kv (flow coefficient), actuator, pneumatic actuator, electric actuator, GOST.