Rechercher

This document defines terms that are relevant to the characterization of particles and particulate systems. This document includes such fields as the representation of results of particle size analysis, the descriptive and quantitative representation of particle shape and morphology, sample preparation, specific surface area and porosity characterization and such measurement methods as…

This document defines terms related to spinning rotor gauges (SRGs), specifies the necessary parameters for SRGs, details their calibration procedure and describes which measurement uncertainties to consider when operating these gauges. This document is applicable to pressure up to 2 Pa.

This document specifies procedures, independent of the transmission process, for protecting the integrity of transmitted financial-service-related messages and for verifying that a message has originated from an authorized source, or that stored data has retained integrity. A list of block ciphers approved for the calculation of a message authentication code (MAC) is also provided. The…

This document provides rules for structuring of systems in the domain of power supply systems, being supplementary to the general principles for the structuring of systems including structuring of information about systems specified in IEC 81346-1. Based on these principles, rules and guidance are given for the formulation of unambiguous reference designations for objects in any system. The…

This document defines requirements on the electronic measurements (during spray operation) and recording of operator-controlled application parameters that influence spray drift, when specified for certain drift reduction technologies (DRT). The values measured and recorded can be used to compare the setting of the sprayer with the provisions authorized for the specific DRT. The document is…

1 Scope 1.1 This Standard applies to newly produced gas-fired low-pressure steam and hot water boilers with gas inlet pressure ratings not exceeding 0.5 psi (3.5 kPa) and having input ratings of less than 12 500 000 Btu/h (3 663 389 W) (see Clause 3), hereinafter referred to as boilers,* constructed entirely of new unused parts and materials, a) for operation at or below the following…

1 Scope 1.1 This Standard covers plumbing fittings, including the following: a) automatic compensating valves other than those for individual wall-mounted showering systems; b) solenoid valves; c) temperature-actuated in-line mixing valves; d) thermal expansion relief valves; and e) trap primers. 1.2 This Standard does not cover the following plumbing supply fittings and accessories…

1 Scope 1.1 General This Standard applies to self-acting spring-operated devices that automatically reduce the initial pressure in water systems to a set lower pressure. It applies to devices that are of the direct-acting diaphragm type with a means for adjusting the pressure setting. Valves can be with or without an integral bypass relief valve or strainer. 1.2 Sizes This Standard applies to…

1 Scope 1.1 Inclusions This Standard specifies requirements for manually or automatically operated valves, in sizes NPS 4 and smaller. Valves covered by this Standard are intended for installation as water shutoff valves between the meter and the supply stop. Note: Manually or automatically operated valves covered by this Standard are also known as supply line stops. 1.2 This Standard does…

1 Scope 1.1 This Standard covers plumbing fixtures made of stainless steel alloys and specifies requirements for materials, construction, performance, testing, and markings. Note: The term “corrosion-resisting steel” is also applied to stainless steel. 1.2 This Standard covers the following plumbing fixtures: a) bathtubs; b) bidets; c) drinking fountains and water coolers; d)…