ISO 9908:1993

Name: ISO 9908:1993 — Technical specifications for centrifugal pumps — Class III
SKU: ISO 9908:1993
Price: 37800 RUB
Availability: InStock

Technical specifications for centrifugal pumps — Class III

Название (английский):

ISO 9908:1993

Technical specifications for centrifugal pumps — Class III

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 21
Дата публикации:: 4 ноября 1993 г.
Издание:: ISO IS 9908 edition 1 version 1
ICS:: 23.080

Тип поставки:

Full version37 800 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:37 800 ₽

Описание (английский):

Covers class III requirements for centrifugal pumps of single stage, multistage, horizontal or vertical construction (coupled or close-coupled) with any drive and any installation for general application. Includes design features concerned with installation, maintenance and safety of such pumps including baseplate, coupling and auxiliary piping but excluding the driver, if it is not an integral part of the pump.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 9908:1993 - Technical specifications for centrifugal pumps - Class III defines the Class III (least severe) requirements for general-purpose centrifugal pumps. It applies to single- and multistage, horizontal or vertical pumps, coupled or close‑coupled, with any drive and installation - excluding the driver when it is not an integral part of the pump. The standard covers design features that affect installation, maintenance and safety, including baseplate, coupling and auxiliary piping. Annexes include a pump data sheet, enquiry/purchase guidance and examples of seal and piping arrangements.

Key topics and requirements

Scope & classification: Class III in a three‑class system (ISO 9905 = Class I; ISO 5199 = Class II). Selection of class is by purchaser/manufacturer agreement.

Performance & NPSH: NPSHR is based on cold water per ISO 2548 / ISO 3555; NPSHA must exceed NPSHR by at least 0.5 m.

Characteristic curve & rated conditions: The pump characteristic curve must indicate allowable operating range and rated (guarantee) point.

Pressure‑temperature rating: Basic design pressure is at least 6 bar at 20 °C for common materials (cast iron, ductile iron, carbon or stainless steel), adjusted where material properties require.

Mechanical design: Requirements for casing thickness, gaskets, external bolting, flanges (compatible with ISO 7005 series) and provisions for dismantling without disturbing pipe connections where practicable.

Rotordynamics & vibration: First lateral critical speed must be at least 10% above maximum allowable continuous speed; unfiltered vibration limits and measurement locations are specified (shop-test basis).

Shafts, seals and bearings: Limits for shaft deflection/runout, seal cavity dimensions per ISO 3069, option for mechanical seals or packing, and bearing life (basic rating life) ≥ 10 000 h.

Documentation & testing: Includes shop inspection, hydrostatic testing, preparation for dispatch and a standard data sheet (Annex A).

Applications

ISO 9908 is intended for general‑purpose centrifugal pump specification and procurement where moderate severity requirements are appropriate. Typical uses:

General industrial water services

HVAC and building services

Light process duties in chemical, food or utility plants

OEM pump manufacturing and standard product lines

Who uses this standard

Pump manufacturers and designers ensuring compliance with Class III technical specs

Procurement professionals and purchasers specifying pump requirements

Consulting and mechanical engineers preparing pump schedules and installation documents

Maintenance and reliability engineers referencing design and testing expectations

Related standards

ISO 9905 (Centrifugal pumps - Class I)

ISO 5199 (Centrifugal pumps - Class II)

ISO 2548, ISO 3555 (acceptance tests / NPSH), ISO 3069 (seal cavities)

ISO 7005‑1/2/3 (flanges), ISO 2372 (vibration), ISO 76 / ISO 281 (bearing ratings)

Keywords: ISO 9908, centrifugal pumps, Class III, pump technical specifications, pump design, NPSH, shaft sealing, pump vibration, pump procurement.

ISO 9908:1993

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Технические детали

ISO 9905:1994

Technical specifications for centrifugal pumps — Class I

BS EN ISO 5199:2002

Technical specifications for centrifugal pumps. Class II

ISO 2548:1973

Centrifugal, mixed flow and axial pumps — Code for acceptance tests — Class C

ISO 3555:1977

Centrifugal, mixed flow and axial pumps — Code for acceptance tests — Class B

BS ISO 7005-1:2011

Pipe flanges - Steel flanges for industrial and general service piping systems

ISO 3069:2000

End-suction centrifugal pumps — Dimensions of cavities for mechanical seals and for soft packing

BS ISO 23729:2022

Surface chemical analysis. Atomic force microscopy. Guideline for restoration procedure for atomic force micr…