{"id":694,"date":"2025-12-03T14:03:34","date_gmt":"2025-12-03T06:03:34","guid":{"rendered":"https:\/\/www.dstpvc.com\/?post_type=products&p=694"},"modified":"2026-01-29T09:59:09","modified_gmt":"2026-01-29T01:59:09","slug":"pvc-u-granules-for-dwv-pipes","status":"publish","type":"products","link":"https:\/\/www.dstpvc.com\/es\/products\/pvc-u-granules-for-dwv-pipes\/","title":{"rendered":"Gr\u00e1nulos de PVC-U para tuber\u00edas de drenaje y ventilaci\u00f3n"},"content":{"rendered":"

The table below summarizes the most important specifications to focus on:<\/span><\/p>\n

\n
\n
<\/div>\n
<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n
Propiedad<\/span><\/th>\nWhy It\u2019s Critical for DWV<\/span><\/th>\nKey Standards \/ Requirements<\/span><\/th>\n<\/tr>\n<\/thead>\n
Impact Resistance<\/span><\/strong><\/td>\nPrevents cracks from handling, installation, or debris during service<\/span>.<\/span><\/td>\nDrop weight impact test<\/span><\/strong>\u00a0(e.g., no failure at -10\u00b0C or lower)<\/span>.<\/span><\/td>\n<\/tr>\n
Ring Stiffness (SN)<\/span><\/strong><\/td>\nResists deformation from backfill soil loads and ground pressure<\/span>.<\/span><\/td>\nClassified in stiffness classes (e.g., SN2, SN4, SN8) per standards like EN 1401-1<\/span>.<\/span><\/td>\n<\/tr>\n
Pipe Stiffness & Crush Resistance<\/span><\/strong><\/td>\nEnsures the pipe won\u2019t collapse under static or dynamic loads<\/span>.<\/span><\/td>\nDefined in standards like ASTM F2390 for DWV pipe<\/span>.<\/span><\/td>\n<\/tr>\n
Hydrostatic Burst Resistance<\/span><\/strong><\/td>\nEnsures integrity despite occasional pressure surges or blockages<\/span>.<\/span><\/td>\nMinimum burst pressure specified in standards like ASTM F2390<\/span>.<\/span><\/td>\n<\/tr>\n
Dimensional Stability<\/span><\/strong><\/td>\nPrevents joint leaks and system failure from heat-induced shrinkage<\/span>.<\/span><\/td>\nLongitudinal reversion<\/span><\/strong>\u00a0test (low % shrinkage)<\/span>.<\/span><\/td>\n<\/tr>\n
Heat Resistance<\/span><\/strong><\/td>\nMaintains shape and strength when exposed to hot drainage water<\/span>.<\/span><\/td>\nTemperatura de ablandamiento Vicat<\/span><\/strong>\u00a0(typically \u226579\u00b0C)<\/span>.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\ud83e\uddea Specific Formulation Guidance<\/span><\/h3>\n

Achieving the above properties requires a carefully balanced \u201crecipe.\u201d Here are the key components and their roles in a DWV-optimized PVC-U formulation:<\/span><\/p>\n

    \n
  • \n

    Resina de PVC<\/span><\/strong>: Use a resin with a\u00a0<\/span>K-value between 65-68<\/span><\/strong>\u00a0for a good balance of mechanical strength and processability<\/span>.<\/span><\/p>\n<\/li>\n

  • \n

    Modificadores de impacto<\/span><\/strong>: Essential for toughness.\u00a0<\/span>Chlorinated Polyethylene (CPE)<\/span><\/strong>\u00a0o\u00a0<\/span>acrylic-based modifiers<\/span><\/strong>\u00a0are commonly added to absorb impact energy and prevent brittle fracture<\/span>.<\/span><\/p>\n<\/li>\n

  • \n

    Heat Stabilizers<\/span><\/strong>: Critical to prevent degradation during high-temperature extrusion.\u00a0<\/span>Calcium-Zinc (Ca-Zn)<\/span><\/strong>\u00a0systems are the leading environmentally friendly choice, replacing traditional lead-based stabilizers, especially for pipes that may contact wastewater<\/span>.<\/span><\/p>\n<\/li>\n

  • \n

    Lubricants<\/span><\/strong>: A balanced system of\u00a0<\/span>internal<\/span><\/strong>\u00a0(e.g., stearic acid) and\u00a0<\/span>external<\/span><\/strong>\u00a0(e.g., paraffin wax) lubricants ensures smooth processing, good surface finish, and prevents the melt from sticking to equipment<\/span>.<\/span><\/p>\n<\/li>\n

  • \n

    Fillers<\/span><\/strong>:\u00a0<\/span>Calcium Carbonate (CaCO\u2083)<\/span><\/strong>\u00a0is the primary filler used to reduce cost and increase stiffness. For non-pressure DWV pipes,\u00a0<\/span>higher loadings (up to 40 phr or more)<\/span><\/strong>\u00a0can be used compared to pressure pipes, which improves rigidity and is cost-effective<\/span>.<\/span><\/p>\n<\/li>\n

  • \n

    Processing Aids & Pigments<\/span><\/strong>: Acrylic-based\u00a0<\/span>processing aids<\/span><\/strong>\u00a0promote fusion and improve melt strength<\/span>.\u00a0<\/span>Titanium Dioxide (TiO\u2082)<\/span><\/strong>\u00a0is the common pigment that provides color (often white\/grey for DWV) and acts as a UV protector<\/span>.<\/span><\/p>\n<\/li>\n<\/ul>\n

    A sample formulation from a patent for underground conduit includes 100 parts PVC resin, 2 parts calcium stearate, 3 parts TiO\u2082, 2 parts CaCO\u2083, and 1 part processing aid, highlighting a typical additive structure<\/span>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

    For PVC-U granules used in Drain-Waste-Vent (DWV) pipes, the most critical performance requirements shift from high pressure resistance (needed for water supply) to\u00a0impact resistance and structural stiffness<\/strong>. These pipes must survive installation impacts, soil loads, and possible blockages without cracking.<\/p>","protected":false},"featured_media":621,"template":"","adweb_product_categories":[70,19],"adweb_product_tags":[245,247,243,244,246,251,252,250,248,249],"class_list":["post-694","products","type-products","status-publish","has-post-thumbnail","hentry","adweb_product_cat-pvc-extrusion-grade-granules","adweb_product_cat-pvc-granules","adweb_product_tag-buy-pvc-u-granules-for-dwv-pipes","adweb_product_tag-cheap-pvc-u-granules-for-dwv-pipes","adweb_product_tag-china-pvc-u-granules-for-dwv-pipes","adweb_product_tag-high-quality-pvc-u-granules-for-dwv-pipes","adweb_product_tag-hot-sale-pvc-u-granules-for-dwv-pipes","adweb_product_tag-pvc-u-granules-for-dwv-pipes-factory","adweb_product_tag-pvc-u-granules-for-dwv-pipes-for-sale","adweb_product_tag-pvc-u-granules-for-dwv-pipes-manufacturer","adweb_product_tag-pvc-u-granules-for-dwv-pipes-price","adweb_product_tag-pvc-u-granules-for-dwv-pipes-wholesale"],"gallery":[625,624,619],"order":"0","acf":[],"_links":{"self":[{"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/adweb_products\/694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/adweb_products"}],"about":[{"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/types\/products"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/media\/621"}],"wp:attachment":[{"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/media?parent=694"}],"wp:term":[{"taxonomy":"adweb_product_cat","embeddable":true,"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/adweb_product_categories?post=694"},{"taxonomy":"adweb_product_tag","embeddable":true,"href":"https:\/\/www.dstpvc.com\/es\/wp-json\/wp\/v2\/adweb_product_tags?post=694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}