{"version":"1.0","provider_name":"Nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean nghi\u1ec7p van l\u00f3t flo | YOUFUMI","provider_url":"https:\/\/www.china-yfm.com\/vi","author_name":"ROY XU","author_url":"https:\/\/www.china-yfm.com\/vi\/author\/roy\/","title":"Backflow Preventer vs. SS Check Valve: What's the Difference?","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"s4npE5XZmE\"><a href=\"https:\/\/www.china-yfm.com\/vi\/blog\/backflow-preventer-vs-check-valve\/\">Van ch\u1ed1ng d\u00f2ng ch\u1ea3y ng\u01b0\u1ee3c so v\u1edbi van m\u1ed9t chi\u1ec1u SS: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.china-yfm.com\/vi\/blog\/backflow-preventer-vs-check-valve\/embed\/#?secret=s4npE5XZmE\" width=\"600\" height=\"338\" title=\"\u201cVan ch\u1ed1ng d\u00f2ng ch\u1ea3y ng\u01b0\u1ee3c so v\u1edbi van ki\u1ec3m tra SS: S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec?\u201d \u2014 Nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean nghi\u1ec7p c\u00e1c lo\u1ea1i van l\u00f3t flo | YOUFUMI\" data-secret=\"s4npE5XZmE\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.china-yfm.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.china-yfm.com\/wp-content\/uploads\/2025\/03\/backflow-preventer.webp","thumbnail_width":824,"thumbnail_height":486,"description":"Understand the crucial differences between backflow preventers and SS check valves. While backflow preventers offer multiple layers of protection for potable water safety with required testing, check valves provide simpler, more economical reverse flow prevention for general applications. Learn which device best suits your specific plumbing needs based on safety requirements and local codes."}