JIS B 8312-1991 PDF

Full title and description

St JIS B 8312-1991 — Gear pumps and screw pumps — Testing methods (Japanese: 歯車ポンプ及びねじポンプ−試験及び検査方法). This JIS specifies factory acceptance and inspection/test methods for gear pumps, screw pumps and similar positive-displacement rotary pumps; it excludes pumps that form an integral part of other machines and defines the pump boundary at the suction and discharge flanges.

Abstract

This standard sets out test arrangements, measurement methods and acceptance checks for volumetric rotary pumps (gear and screw types) when tested at the manufacturer. It covers hydraulic performance tests (flow, total head/pressure, efficiency), shaft power and speed measurements, suction/self-priming checks, pressure/leakage tests and required test records; test apparatus and calibration references are indicated.

General information

• Status: Superseded (replaced by JIS B 8312:2002).
• Publication date: 30 November 1991.
• Publisher: Japanese Standards Association (JSA) / JIS system.
• ICS / categories: Fluid systems and components for general use — Pumps (ICS group 23.080 / JIS category: Pumps / Hydraulic & pneumatic equipment).
• Edition / version: 1991 edition (original issue described as JIS B 8312:1991; later edition published 2002).
• Number of pages: Typical published length reported in bibliographic listings is in the 16–32 page range for JIS B 8312 family documents; many library/product listings indicate circa 32 pages for the 1991 entry.

Scope

Defines factory acceptance and inspection (performance and endurance) test methods for gear pumps, screw pumps and similar positive-displacement rotary pumps. Applies to whole pump units delimited by the suction and discharge flanges; does not apply to pumps that are integral components of other machines. Test types include hydraulic performance, suction/self-priming, pressure/leakage, vibration and temperature checks, and the preparation of pump test reports.

Key topics and requirements

• Definitions and pump boundary (suction/discharge flange delimitation) and applicable pump types (gear, screw, similar rotary positive-displacement pumps).
• Hydraulic performance tests: measurement of flow (m3/min or kg/min), total pressure/head, pump efficiency and performance curves.
• Instrumentation and calibration requirements (references to JIS B 8302 for flow measurement and JIS B 8301 for speed/shaft-power measurement where applicable).
• Shaft power and rotational speed measurement methods and reporting of electrical/mechanical input power.
• Suction performance (self-priming/cavitation checks) and acceptance criteria; recommended test procedures for suction conditions.
• Leakage and pressure (hydrostatic) tests (e.g., pressure hold durations and test pressures), vibration and bearing-temperature limits during specified operating conditions.
• Test rig descriptions, recommended test fluids and temperature/viscosity considerations for viscous liquids.
• Required test report (pump test record/form) and typical data fields (test conditions, measured values, instrument calibration references, signatures).

Typical use and users

Used by pump manufacturers, test-laboratory engineers, quality/inspection teams, pump purchasers and acceptance-test personnel. Also referenced by R&D and service organizations when verifying pump hydraulic performance, conducting acceptance testing, or preparing supplier test certificates. Suitable for industry sectors using positive-displacement pumps (industrial fluids, hydraulics, oil & gas, chemical processing, building services).

Related standards

Related JIS and measurement standards commonly referenced by this standard include JIS B 8302 (flow measurement methods for pumps), JIS B 8301 (rotational speed and shaft-power measurement), other JIS pump standards such as JIS B 8311 (reciprocating pumps) and JIS B 8313 (small volute pumps). The 1991 edition was formally replaced by JIS B 8312:2002 which consolidates and updates test methods.

Keywords

JIS B 8312, gear pump, screw pump, positive-displacement pump, pump testing, factory acceptance test, hydraulic performance, pump test methods, JSA, Japanese Industrial Standard.

FAQ

Q: What is this standard?

A: A Japanese Industrial Standard (JIS B 8312:1991) that specifies test and inspection methods for gear and screw (volumetric rotary) pumps when tested at the manufacturer.

Q: What does it cover?

A: Factory acceptance/performance tests (flow, pressure/head, shaft power, efficiency), suction/self-priming checks, leakage/hydrostatic tests, vibration and temperature checks, test apparatus guidance and the format of pump test records.

Q: Who typically uses it?

A: Pump manufacturers, inspection and test engineers, quality assurance teams, buyers specifying acceptance tests, and service/test laboratories.

Q: Is it current or superseded?

A: Superseded. JIS B 8312:1991 has been replaced by JIS B 8312:2002 (the 2002 edition is the subsequent active revision for the test-method topic).

Q: Is it part of a series?

A: Yes — it is part of the JIS pump standards family (B 8300–B 8399 series covering pump measurement and test methods and individual pump-type standards such as JIS B 8311, B 8313, etc.).

Q: What are the key keywords?

A: Gear pump, screw pump, positive-displacement pump, pump testing, acceptance tests, hydraulic performance, JIS B 8312.