{"id":389643,"date":"2024-10-20T03:50:57","date_gmt":"2024-10-20T03:50:57","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-134332021\/"},"modified":"2024-10-26T07:04:29","modified_gmt":"2024-10-26T07:04:29","slug":"bs-en-134332021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-134332021\/","title":{"rendered":"BS EN 13433:2021"},"content":{"rendered":"

This document specifies the dimensional, physical-chemical, design, hydraulic, mechanical and acoustic characteristics of mechanical disconnectors, direct actuated Family G, Type A. This document is applicable to mechanical disconnectors in nominal sizes DN 8 up to DN 250, intended to prevent the return of water having lost its original sanitary and drinking qualities (called \u201cpolluted water\u201d in this document), into the potable water distribution system whenever the pressure of the latter is temporarily lower than in the polluted circuit. This document covers the mechanical disconnectors of PN 10 that are capable of working without modification or adjustment: \u2014 at any pressure up to 1,0 MPa (10 bar); \u2014 with any pressure variation up to 1,0 MPa (10 bar); \u2014 in permanent duty at a limit temperature of 65 \u00b0C and 90 \u00b0C for 1 h maximum. It specifies also the test methods and requirements for verifying these characteristics, the marking and the presentation at delivery.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
9<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
11<\/td>\n4 Denomination
5 Designation
6 Symbolization <\/td>\n<\/tr>\n
12<\/td>\n7 Physical-chemical characteristics
7.1 General
7.2 Materials
7.2.1 General
7.2.2 Dezincification resistant copper alloy
7.3 Surface of the body
7.3.1 General <\/td>\n<\/tr>\n
13<\/td>\n7.3.2 Epoxy Coating
7.3.3 Polyamide Powder based Coating
8 Design
8.1 General
8.2 Relief valve\/Obturator
8.2.1 General <\/td>\n<\/tr>\n
14<\/td>\n8.2.2 Mechanical Disconnector Family G, Type A
8.3 Disconnection distance
9 Characteristics and tests
9.1 General
9.2 General tolerances
9.2.1 Tolerance of set parameters
9.2.2 Accuracy of measuring instruments
9.3 Dimensional characteristics
9.3.1 Connections
9.3.2 Pressure taps <\/td>\n<\/tr>\n
15<\/td>\n9.4 Mechanical characteristics
9.4.1 General
9.4.2 Mechanical resistance of the body under pressure
9.4.2.1 Requirement
9.4.2.2 Procedure <\/td>\n<\/tr>\n
16<\/td>\n9.4.3 Endurance
9.4.3.1 Requirement
9.4.3.2 Procedures <\/td>\n<\/tr>\n
17<\/td>\n9.4.4 Torque test of Captive rotating Nuts and Bending Strength \u2013 Tightness of the Body
9.4.4.1 Requirement
9.4.4.2 Test method <\/td>\n<\/tr>\n
18<\/td>\n9.5 Leak tightness characteristics
9.5.1 Verification of the leak tightness of the downstream check valve in closing direction
9.5.1.1 Requirement
9.5.1.2 Procedure
9.5.2 Verification of the leak tightness of check valve device (opening direction)
9.5.2.1 Requirement <\/td>\n<\/tr>\n
19<\/td>\n9.5.2.2 Procedure
9.5.3 Verification of the leak tightness of the upstream spring loaded obturator in drain position at low pressure (in the opening direction)
9.5.3.1 Requirement
9.5.3.2 Procedure <\/td>\n<\/tr>\n
20<\/td>\n9.6 Hydraulic characteristics
9.6.1 Test rig \u2013 General circuit <\/td>\n<\/tr>\n
21<\/td>\n9.6.2 Verification of the pressure loss as a function of flow rate
9.6.2.1 Requirement
9.6.2.2 Procedure <\/td>\n<\/tr>\n
22<\/td>\n9.6.3 Verification of the opening and closing pressures of relief valve
9.6.3.1 Requirement
9.6.3.2 Procedure
9.6.3.3 Closing
9.6.4 Verification of the relief valve flow rate
9.6.4.1 Requirement
9.6.4.2 Procedure <\/td>\n<\/tr>\n
23<\/td>\n9.6.5 Compatibility with the products used for disinfection of water distribution systems
9.6.5.1 Requirement
9.6.5.2 Procedure
9.6.6 Acoustic tests
9.6.6.1 General
9.6.6.2 Procedure <\/td>\n<\/tr>\n
24<\/td>\n10 Order of testing <\/td>\n<\/tr>\n
25<\/td>\n11 Marking and technical documents
11.1 General
11.2 Marking <\/td>\n<\/tr>\n
26<\/td>\n11.3 Technical documents
12 Presentation at delivery <\/td>\n<\/tr>\n
27<\/td>\nAnnex A (informative)Examples of presentation of test results <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Devices to prevent pollution by backflow of potable water. Mechanical disconnector, direct actuated. Family G, type A<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":389654,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[212,2641],"product_tag":[],"class_list":{"0":"post-389643","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-060-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/389643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/389654"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=389643"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=389643"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=389643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}