ISO 17420-3:2012

Name: ISO 17420-3:2012 — Respiratory protective devices — Performance requirements — Part 3: Thread connection
SKU: ISO 17420-3:2012
Price: 32400 RUB
Availability: InStock

Respiratory protective devices — Performance requirements — Part 3: Thread connection

Название (английский):

ISO 17420-3:2012

Respiratory protective devices — Performance requirements — Part 3: Thread connection

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 15 октября 2012 г.
Издание:: ISO IS 17420 edition 1 version 1
ICS:: 13.340.30

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Цена:32 400 ₽

Описание (английский):

L'ISO 17420-3:2012 s'applique à un dispositif de filtration non assisté et spécifie une connexion standard filetée entre un filtre et l'interface respiratoire comme requis dans l'ISO 17420-2. L'ISO 17420-3:2012 inclut également la description de simulateurs d'essai qui sont nécessaires à l'évaluation de certaines exigences.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 17420-3:2012 specifies the standardized thread connection between filters and respiratory interfaces for unassisted filtering respiratory protective devices. It defines the mechanical geometry, sealing element characteristics, and required tests to ensure safe, interchangeable connections between filters (male thread) and masks or interfaces (female thread). The standard uses a ∅40×1/7 thread profile and provides pass/fail criteria and GO/NO‑GO gauging and test methods for manufacturers, test labs and regulatory bodies.

Key topics and technical requirements

Thread profile and dimensions: Standard thread profile ∅40×1/7 with detailed major/minor diameters, pitch and thread height.

Effective thread length: Male effective length ≥ 14.5 mm; female available length (13.0 ± 0.5) mm.

Sealing element geometry: Annular sealing element with external diameter ≥ 37.5 mm, internal diameter ≤ 30.0 mm, thickness 2.0 +0.5 mm and a flat surface toward the filter.

Sealing material properties: Hardness 55–70 Shore A and compression set ≤ 25% after 22 h at 68 °C (ISO 7619‑1 and ISO 815‑1 test methods).

Circularity tolerances: Thread circularity tolerance 0.15 mm (male major radius and female minor radius).

Mechanical strength: Connectors must withstand an axial pull force of 100 N for 10 s without separation, breakage or permanent deformation.

Gauging and tests: Use of GO and NO‑GO gauges (including snap and sector NO‑GO gauges), visual inspection, circularity checks and dimensional gauging as described in the standard.

Absence of geometric interference: Limits on protrusion of filter or connector faces so interfaces remain compatible and unobstructed.

Practical applications and users

Manufacturers of filters, cartridges and respiratory interfaces who need to design compatible, interchangeable thread connections.

PPE designers and product engineers specifying connector geometry and sealing details.

Testing laboratories and conformity assessment bodies performing dimensional, material and mechanical tests per ISO 17420‑3.

Procurement and safety managers who require assured compatibility between filters and different mask models (interchangeability).

Regulatory compliance teams ensuring respiratory protective devices meet international mechanical and sealing requirements.

Related standards

ISO 17420-2 - Respiratory protective devices - Filtering devices (interface requirements).

ISO 16972 - Respiratory protective devices - Terms, definitions and units.

ISO 7619-1 - Rubber - Durometer hardness (Shore).

ISO 815-1 - Rubber - Compression set.

Keywords: ISO 17420-3, respiratory protective devices, thread connection, filter thread standard, ∅40×1/7, GO/NO‑GO gauge, sealing element, Shore A hardness, compression set, PPE compatibility.

ISO 17420-3:2012

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

BS ISO 7619-1:2010

Rubber, vulcanized or thermoplastic. Determination of indentation hardness - Durometer method (Shore hardness)

BS ISO 815-1:2014

Rubber, vulcanized or thermoplastic. Determination of compression set - At ambient or elevated temperatures

ISO 17420-2:2021

Respiratory protective devices — Performance requirements — Part 2: Requirements for filtering RPD

BS EN ISO 16972:2020-TC

Tracked Changes. Respiratory protective devices. Vocabulary and graphical symbols.