JIS F 7480-1996 PDF

Full title and description

JIS F 7480:1996 — Shipbuilding — Rubber seat butterfly valves. This Japanese Industrial Standard specifies requirements for rubber-seat (soft-seated) butterfly valves intended for shipboard piping systems (for example, services such as fresh water, sea water and oil systems) used in shipbuilding and ship repair.

Abstract

This standard defines terminology, constructional and dimensional requirements, materials, performance (including leakage and pressure capability), testing and marking for rubber-seat butterfly valves designed for use in shipboard piping systems. It is intended to ensure safety, interchangeability and suitability of such valves for marine service.

General information

• Status: Current / Confirmed (valid as of most recent JIS confirmation dates).
• Publication date: December 31, 1996 (JIS edition 1996).
• Publisher: Japanese Standards Association (JSA) / 日本規格協会.
• ICS / categories: 47.020.30 — Piping systems (shipbuilding / marine valves).
• Edition / version: 1996 edition (JIS F 7480:1996).
• Number of pages: 16 pages.

Scope

The standard covers rubber-seat (soft-seated) butterfly valves intended specifically for shipboard piping systems. It addresses the aspects necessary to specify and verify valves for marine applications including construction, materials selection appropriate for seawater and petroleum-related services, pressure/temperature capability, allowable leakage, tests (hydrostatic and operational), inspection and required markings. It is focused on ensuring valves are suitable for installation in ship piping systems rather than on general industrial butterfly valves.

Key topics and requirements

• Scope and definitions: terminology specific to rubber-seat butterfly valves for ship use.
• Construction and materials: body, disc, stem and rubber-seat materials suitable for marine environments.
• Dimensional and connection requirements: nominal sizes and flange/connection interfaces relevant to ship piping.
• Pressure/temperature ratings and allowable leakage classes for soft-seated valves.
• Operational requirements: actuators/operating torque, stem sealing and anti-blowout features.
• Testing and inspection: hydrostatic pressure test, operational cycling, seat leakage test, and acceptance criteria.
• Marking and documentation: required markings on the valve and accompanying technical information for installation and maintenance.

Typical use and users

Primary users are shipbuilders, naval architects, marine equipment manufacturers, valve suppliers for the maritime sector, ship operators, ship repair yards and classification societies involved in specifying, procuring, installing and certifying shipboard piping valves. The standard is used when specifying valves for fresh water, seawater, ballast, bilge, cooling and certain oil services on ships.

Related standards

Related documents include other JIS F-series standards covering valves and shipboard piping, national/industry standards on valve testing and pressure ratings, and classification society rules for marine equipment. Complementary international standards on valve testing and valve types (used for cross-reference in procurement and certification) are commonly consulted alongside this JIS.

Keywords

JIS F 7480, rubber-seat butterfly valve, shipbuilding, marine valves, soft-seated butterfly valve, valve testing, piping systems, maritime equipment.

FAQ

Q: What is this standard?

A: JIS F 7480:1996 is a Japanese Industrial Standard that specifies requirements for rubber-seat (soft-seated) butterfly valves intended for shipboard piping systems.

Q: What does it cover?

A: It covers terminology, construction, materials, dimensional/connection requirements, pressure and leakage performance, testing and inspection, marking and documentation for rubber-seat butterfly valves used in shipbuilding.

Q: Who typically uses it?

A: Shipbuilders, marine valve manufacturers, procurement/specification engineers, classification societies and ship repair yards use this standard when selecting and verifying butterfly valves for shipboard service.

Q: Is it current or superseded?

A: The 1996 edition (JIS F 7480:1996) is listed as valid/confirmed by the Japanese Standards Association, with confirmation entries in the standard history; it is therefore treated as current unless a newer revision has been published after the latest confirmation.

Q: Is it part of a series?

A: Yes — it is part of the JIS F family of shipbuilding and marine equipment standards that cover valves and piping systems; other JIS F standards address different valve types, testing methods and related shipboard piping components.

Q: What are the key keywords?

A: Rubber-seat butterfly valve, soft-seated, shipbuilding, marine valve, JIS F 7480, valve testing, piping systems.