{"id":212919,"date":"2024-10-19T13:47:21","date_gmt":"2024-10-19T13:47:21","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-79422011\/"},"modified":"2024-10-25T06:40:09","modified_gmt":"2024-10-25T06:40:09","slug":"bs-79422011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-79422011\/","title":{"rendered":"BS 7942:2011"},"content":{"rendered":"

This British Standard specifies performance and material requirements and gives test methods for three types of TMV, of nominal size up to and including DN25, for use in care establishments. The TMVs covered by this standard are those which are suitable for the hot and cold water supply pressures and temperatures given in Table 1, and those which are suitable for the applications given in Table 2.<\/p>\n

Annex A to Annex E give the apparatus and test methods for the durability of TMVs, Annex F to Annex M and Annex O to Annex S give the apparatus and test methods for the performance of TMVs. Annex N gives an assessment of transient values, Annex T gives a summary of thermal performance requirements and Annex U and Annex V give recommendations for commissioning and in-service tests.<\/p>\n

Table 1 TMV general use conditions<\/b><\/p>\n

Table 2 Mixed-water temperature<\/b><\/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\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
7<\/td>\nTable 1\u2003TMV general use conditions <\/td>\n<\/tr>\n
8<\/td>\nTable 2\u2003Mixed-water temperature <\/td>\n<\/tr>\n
11<\/td>\nFigure 1\u2003Specimen test sequences <\/td>\n<\/tr>\n
15<\/td>\n\tTable 3\tTest pressures for manual diverters <\/td>\n<\/tr>\n
16<\/td>\nFigure 2\u2003Hydraulic resistance for low pressure diverters with automatic return
Table 4\u2003Test pressures and hydraulic resistances for diverters with automatic return <\/td>\n<\/tr>\n
19<\/td>\nTable 5\u2003Flow rates <\/td>\n<\/tr>\n
20<\/td>\nTable 6\u2003Mixed-water temperature settings for determination of flow rate and sensitivity <\/td>\n<\/tr>\n
21<\/td>\nTable 7\u2003Initial settings for thermal performance tests <\/td>\n<\/tr>\n
22<\/td>\nTable 8\u2003Permitted duration of transient mixed-water temperature rise <\/td>\n<\/tr>\n
24<\/td>\nTable 9\u2003Leakage flow of cold water
Table 10\u2003Changes in water supply pressure and permitted temperature change <\/td>\n<\/tr>\n
25<\/td>\nTable 11\u2003Changes in water supply temperature and permitted temperature change
\tTable 12\tReduced flow rates and permitted temperature change <\/td>\n<\/tr>\n
26<\/td>\n\tTable 13\tDesignation codes <\/td>\n<\/tr>\n
28<\/td>\nFigure A.1\u2003Test rig for durability test on thermostat <\/td>\n<\/tr>\n
30<\/td>\nFigure A.2\u2003Pressure take-off tee
Table A.1\u2003\ufffdDimensions of pressure take-off tees
\nDimensions in millimetres <\/td>\n<\/tr>\n
32<\/td>\n\tTable B.1\tPressure of water supply for durability tests <\/td>\n<\/tr>\n
35<\/td>\nTable E.1\u2003Settings for thermostat durability test <\/td>\n<\/tr>\n
37<\/td>\nFigure F.1\u2003Test rig for performance tests <\/td>\n<\/tr>\n
48<\/td>\nFigure N.1\u2003Example of transient temperature variation <\/td>\n<\/tr>\n
53<\/td>\nTable S.1\u2003Maximum margins of failure <\/td>\n<\/tr>\n
54<\/td>\nTable T.1\u2003Summary of thermal performance requirements for each sample <\/td>\n<\/tr>\n
56<\/td>\n\tTable U.1\tRecommended maximum continuous temperature during site tests <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Thermostatic mixing valves for use in care establishments. Requirements and test methods<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2011<\/td>\n60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":212922,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1279,2641],"product_tag":[],"class_list":{"0":"post-212919","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-140-70","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\/212919","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\/212922"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=212919"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=212919"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=212919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}