{"id":51716,"date":"2013-05-09T14:30:00","date_gmt":"2013-05-09T14:30:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/how-to-connect-18-inch-tubing-to-a-restek-gas-regulator\/"},"modified":"2026-01-20T16:37:36","modified_gmt":"2026-01-20T16:37:36","slug":"how-to-connect-18-inch-tubing-to-a-restek-gas-regulator","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/blogs-zh\/gnbl4707\/how-to-connect-18-inch-tubing-to-a-restek-gas-regulator","title":{"rendered":"How to connect 1\/8 inch tubing to a Restek gas regulator"},"content":{"rendered":"\n

Because the majority of gas regulators which Restek sells are designed to connect to 1\/4 inch tubing, we (tech service) frequently get asked which additional fittings are needed to connect to 1\/8 inch tubing. This post will summarize which additional fittings are needed to accomplish this task.<\/p>\n\n\n\n

First, let me explain which gas regulators I will be discussing in this post. They can be manufactured of either chrome-plated brass or stainless steel, they can be single or dual stage, and they will have a specific CGA (Compressed Gas Association) fitting on one end. The other end will be a 1\/4 inch MNPT (male National Pipe Thread) fitting, which screws into the shut-off valve on the regulator. The outlet end of this fitting is 1\/4 inch compression, which can connect to 1\/4 inch OD (outside diameter) tubing. This fitting is shown by the red arrow in the photo below.<\/p>\n\n\n

\n
\"gas<\/figure>\n<\/div>\n\n\n

In order to use 1\/8 inch tubing with these gas regulators, you have two options:<\/p>\n\n\n\n

1. Leave the end-fitting (shown by the red arrow) attached to the regulator and install a tube-end reducer to this end fitting. If you have a chrome-plated brass regulator, use Restek catalog number 23129<\/a>. If you have a stainless steel regulator, use 23179<\/a>.<\/p>\n\n\n\n

2. Because this extra fitting can be an additional source of leaks, some customers would prefer to remove the current end fitting and replace it with one that has a 1\/8 inch compression outlet. The catalog numbers for these male connectors are 23136<\/a> for brass and 23186<\/a> for stainless steel. When replacing the end fitting, don\u2019t forget to use PTFE tape. Restek PTFE tape catalog number 22486<\/a> is commonly used for brass fittings and 22487<\/a> for stainless steel fittings.<\/p>\n\n\n\n

Note: If purchasing one of our Silcosteel regulators, don\u2019t forget to purchase treated fittings and treated tubing.<\/p>\n\n\n\n

I hope this post clearly explains which fittings you will need in order to connect one of our gas regulators to 1\/8 inch OD tubing. To read more about fittings, please review my previous post\u00a0I need a fitting, but which one?<\/a>\u00a0\u00a0 If you are looking for the appropriate gas regulator,\u00a0review my post\u00a0Need some help in choosing the correct gas regulator?<\/p>\n\n\n\n

If you have any questions, give us a call. Thanks for reading.<\/p>\n\n\n\n

<\/div>\n\n\n
\n

Products Mentioned<\/h3>\n
\n
\n
\n
\n Catalog No. 23129 <\/a> <\/div>\n
\n
Raccord Swagelok, raccord r\u00e9ducteur 1\/4" \u00e0 1\/8", laiton, lot de 5<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n
\n
\n Catalog No. 23179 <\/a> <\/div>\n
\n
Raccord Swagelok, raccord r\u00e9ducteur 1\/4" \u00e0 1\/8", acier inoxydable, lot de 2<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n
\n
\n Catalog No. 23136 <\/a> <\/div>\n
\n
Raccord Swagelok, connecteur, 1\/8" \u00e0 1\/4" m\u00e2le NPT, Laiton, Lot de 10<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n
\n
\n Catalog No. 23186 <\/a> <\/div>\n
\n
Raccord Swagelok, connecteur 1\/8" \u00e0 1\/4" m\u00e2le NPT, acier inoxydable, Lot de 2<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n
\n
\n Catalog No. 22486 <\/a> <\/div>\n
\n
Ruban ResTape, PTFE gris, 1.25\u00a0cm x 6.6\u00a0m, ruban pour joints filet\u00e9s pour le gaz<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n
\n
\n Catalog No. 22487 <\/a> <\/div>\n
\n
Ruban ResTape, PTFE gris, 1.25\u00a0cm x 6.6\u00a0m, ruban pour joints filet\u00e9s en acier inoxydable<\/div>\n <\/div>\n
\n Voir le produit<\/a>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n \n\n\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Because the majority of gas regulators which Restek sells are designed to connect to 1\/4 inch tubing, we (tech service) frequently get asked which additional fittings are needed to connect to 1\/8 inch tubing. This post will summarize which additional…<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[790],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2421,2408],"resource-technique":[],"ppma_author":[582],"class_list":["post-51716","post","type-post","status-publish","format-standard","hentry","category-blogs-zh","product-library-ferrules-fittings-connectors-zh","product-library-gas-chromatography-products-zh"],"acf":[],"taxonomy_info":{"category":[{"value":790,"label":"\u535a\u5ba2"}],"product-library":[{"value":2421,"label":"\u5361\u5957\uff0c\u63a5\u5934\u548c\u8fde\u63a5\u5668"},{"value":2408,"label":"\u6c14\u76f8\u8272\u8c31\u76f8\u5173\u4ea7\u54c1"}]},"featured_image_src_large":false,"author_info":{"display_name":"Brenda Cogan","author_link":"https:\/\/discover.restek.com\/fr\/author\/brenda-coganrestek-com\/"},"comment_info":0,"category_info":[{"term_id":790,"name":"\u535a\u5ba2","slug":"blogs-zh","term_group":0,"term_taxonomy_id":790,"taxonomy":"category","description":"","parent":0,"count":438,"filter":"raw","cat_ID":790,"category_count":438,"category_description":"","cat_name":"\u535a\u5ba2","category_nicename":"blogs-zh","category_parent":0}],"tag_info":false,"authors":[{"term_id":582,"user_id":0,"is_guest":1,"slug":"alan-sensue","display_name":"Alan Sensue","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/51716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=51716"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/51716\/revisions"}],"predecessor-version":[{"id":83490,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/51716\/revisions\/83490"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=51716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=51716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=51716"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=51716"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=51716"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=51716"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=51716"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=51716"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=51716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}