{"id":2606,"date":"2025-03-04T19:27:56","date_gmt":"2025-03-04T11:27:56","guid":{"rendered":"http:\/\/120.55.194.30\/product\/spirax-sarco-td42l-td42h-npt-thermodynamic-steam-trap\/"},"modified":"2026-03-24T11:37:25","modified_gmt":"2026-03-24T03:37:25","slug":"spirax-sarco-td42l-td42h-npt-thermodynamic-steam-trap","status":"publish","type":"product","link":"https:\/\/www.shopvalves.com\/en\/product\/spirax-sarco-td42l-td42h-npt-thermodynamic-steam-trap\/","title":{"rendered":"Spirax Sarco TD42L\/TD42H NPT Thermodynamic Steam Trap"},"content":{"rendered":"<p>Spirax Sarco TD42L and TD42H thermodynamic steam traps are serviceable traps; the TD42L is calibrated for relatively small condensate discharge and is primarily used for main line trapping; the TD42H is used for process load trapping. For applications requiring air removal, the TD42LA and TD42HA models with anti-air lock discs are available. The outer surface of the body of this series of traps is ENP nickel-plated, providing energy-saving and oxidation-resistant features.<\/p>\n<h3>Sizes and pipe connections<\/h3>\n<ul>\n<li>TD42L: 3\/8\", \u00bd\", \u00be\" and 1\" Screwwed BSP or NPT<\/li>\n<li>TD42H: \u00bd\", \u00be\" and 1\" Screwwed BSP or NPT<\/li>\n<li>TD42LA: 3\/8\", \u00bd\", \u00be\" and 1\" Screwwed BSP or NPT<\/li>\n<li>TD42HA: \u00bd\", \u00be\" Screwed BSP or NPT<\/li>\n<\/ul>\n<h3>Optional Accessories<\/h3>\n<ul>\n<li><strong>heat shield<\/strong>: This prevents the trap from being exposed to low temperatures or wind and rain, which can cause excessive heat loss and lead to frequent operation.<\/li>\n<li><strong>Integral Drain Valve<\/strong>: Filter caps can be drilled and tapped for 3\/8\" BSP or NPT connections to drain valves such as BDV1 or BDV2.<\/li>\n<\/ul>\n<h3>Limitations (ISO 6552)<\/h3>\n<ul>\n<li><strong>Maximum valve body design conditions<\/strong>: PN 63<\/li>\n<li><strong>PMA Maximum Allowable Pressure<\/strong>: 63 bar g@100\u00b0C<\/li>\n<li><strong>TMA Maximum Allowable Temperature<\/strong>: 400\u00b0C @ 42 bar g<\/li>\n<li><strong>Minimum permissible temperature<\/strong>: not clearly labeled (this information is missing from the original content of the document)<\/li>\n<li><strong>PMO Maximum Working Pressure<\/strong>: 42 bar g<\/li>\n<li><strong>TMO Maximum Operating Temperature<\/strong>400\u00b0C @ 42 bar g for TD42L &amp; TD42H; 255\u00b0C @ 42 bar g for TD42LA &amp; TD42HA.<\/li>\n<li><strong>PMOB Maximum Working Back Pressure<\/strong>: 80% of upstream pressure or valve will not close<\/li>\n<li><strong>Minimum inlet pressure for normal operation<\/strong>0.25 bar for TD42L &amp; TD42H; 0.80 bar for TD42LA &amp; TD42HA<\/li>\n<li><strong>Design cold state maximum hydraulic test pressure<\/strong>: 95 bar g<\/li>\n<\/ul>\n<h3>material (that sth is made of)<\/h3>\n<table>\n<thead>\n<tr>\n<th>Item<\/th>\n<th>Part<\/th>\n<th>material (that sth is made of)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>valve body<\/td>\n<td>Stainless steel (ENP finish) ASTM A743 Gr.CA 40F, BS 1449 420 S45, BS 1449 304 S16, AISI 416<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>bonnet<\/td>\n<td>stainless steels<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>filter<\/td>\n<td>stainless steels<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Filter cover<\/td>\n<td>stainless steels<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Filter cover gasket<\/td>\n<td>stainless steels<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>compact disc<\/td>\n<td>stainless steels<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>Heat shield (optional)<\/td>\n<td>aluminum (chemistry)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>weights<\/h3>\n<table>\n<thead>\n<tr>\n<th>caliber<\/th>\n<th>Weight (kg)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>3 \/ 8 \"L<\/td>\n<td>0.80<\/td>\n<\/tr>\n<tr>\n<td>\u00bd\"L<\/td>\n<td>0.75<\/td>\n<\/tr>\n<tr>\n<td>\u00be\"L<\/td>\n<td>0.95<\/td>\n<\/tr>\n<tr>\n<td>1 \"L<\/td>\n<td>1.50<\/td>\n<\/tr>\n<tr>\n<td>\u00bd\"H<\/td>\n<td>0.80<\/td>\n<\/tr>\n<tr>\n<td>\u00be\"H<\/td>\n<td>1.00<\/td>\n<\/tr>\n<tr>\n<td>1 \"H<\/td>\n<td>1.50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Certification<\/h3>\n<p>Standard test certificates are available for this product and need to be specified when ordering.<\/p>\n<h3>Security information, installation and maintenance<\/h3>\n<p>Refer to the Installation and Maintenance Guide (IM-068-024) supplied with the product for detailed information. The trap should preferably be installed on a horizontal pipe with a small drop pipe upstream.<\/p>\n<h3>deal with<\/h3>\n<p>This product is recyclable and does not cause ecological problems when disposed of properly.<\/p>\n<h3>Ordering Instructions<\/h3>\n<p>Example: 1 - Spirax Sarco \u00bd\" TD42L thermodynamic steam trap with threaded connection BSP.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2.png\" alt=\"Spirax Sarco TD42L\/TD42H Thermodynamic Steam Traps - Construction Diagrams\" width=\"572\" height=\"574\" class=\"alignnone size-full wp-image-5208\" srcset=\"https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2.png 572w, https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2-300x300.png 300w, https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2-150x150.png 150w, https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2-12x12.png 12w, https:\/\/www.shopvalves.com\/wp-content\/uploads\/2025\/03\/img_4-2-100x100.png 100w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/p>\n<p><!-- \u6280\u672f\u8d44\u6599\u4e0b\u8f7d\u533a\u5757 --><\/p>\n<div class=\"valve-documents\">\n<h3 class=\"doc-title\">Technical Data Download<\/h3>\n<div class=\"doc-links\">\n<a href=\"https:\/\/doc.shopvalves.com\/TD42L_TD42H-TI-S01-03-EN.pdf\" class=\"doc-link\" target=\"_blank\">td42l_td42h-ti-s01-03-en.pdf<\/a><br \/><a href=\"https:\/\/doc.shopvalves.com\/TI-S01-03-Chinese.pdf\" class=\"doc-link\" target=\"_blank\">TI-S01-03-Chinese.pdf<\/a>    <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Spirax Sarco Spirax Sarco TD42L and TD42H thermodynamic steam traps are serviceable traps.The TD42L is calibrated for cold...<\/p>","protected":false},"featured_media":3665,"template":"","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[24],"product_cat":[74,56],"product_tag":[190,57,65],"class_list":{"0":"post-2606","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-spirax-sarco","7":"product_cat-thermodynamic-steam-traps","8":"product_cat-steam-traps","9":"product_tag-spiraxsarco-thermodynamic-steam-traps","10":"product_tag-spiraxsarco-traps","11":"product_tag-spiraxsarco-valves","13":"first","14":"instock","15":"shipping-taxable","16":"purchasable","17":"product-type-variable","18":"entry","19":"content-bg","20":"loop-entry"},"_links":{"self":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product\/2606","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media\/3665"}],"wp:attachment":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media?parent=2606"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_brand?post=2606"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_cat?post=2606"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_tag?post=2606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}