{"product_id":"sigma-corporation-pwp-c8-pv-lok-8-in-pipe-joint-restraint","title":"Sigma Corporation PWP-C8 Pv-lok 8 in Pipe Joint Restraint","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIGMA CORPORATION PWP-C8 is an 8-inch PV-Lok serrated lock pipe joint restraint designed to secure PVC bell and spigot pipe joints in pressurized water distribution systems. The restraint uses two PV-Lok clamping rings tied together by restraining rods and nuts, with machine-serrated contact surfaces that engage PVC pipe walls to provide positive joint security. The serrations grip directionally, maximizing holdback force during pressure surges and water hammer events. The clamping ring is cast from ductile iron meeting ASTM A-536 grade 65-45-12, and the assembly is coated with red alkyd paint for corrosion protection.\u003c\/p\u003e\n\u003cp\u003eThis restraint is suited for use on 8-inch PVC pressure pipe in municipal water mains, water service laterals, and underground distribution piping. It accommodates a bell end and spigot joint configuration. The working pressure rating equals the rated pressure of the pipe it is installed on, with a minimum 2:1 safety factor. Typical applications include new main installation and repair tie-ins where unrestrained push-on joints require added mechanical holdback. Side clamping bolts and hex nuts are high-strength steel per ASTM A-449, zinc-plated per B-663 Type III for corrosion resistance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMachine-serrated ductile iron clamping ring engages PVC pipe walls for positive joint restraint\u003c\/li\u003e\n  \u003cli\u003eDual PV-Lok clamping rings connected by restraining rods provide full circumferential support\u003c\/li\u003e\n  \u003cli\u003eDirectional gripping action resists joint separation under surge and water hammer pressure\u003c\/li\u003e\n  \u003cli\u003eRestraining rods and nuts meet AWWA\/ANSI C111\/A21.11 with minimum 45,000 psi yield and 60,000 psi tensile strength\u003c\/li\u003e\n  \u003cli\u003eRed alkyd paint coating on ductile iron body for corrosion protection\u003c\/li\u003e\n  \u003cli\u003eFM Approved and compliant with AWWA C-111, AWWA C-900, and AWWA C-905\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on 8-inch PVC pressure pipe in bell and spigot joint configurations meeting AWWA C-900 and AWWA C-905 standards. Compliant with ANSI A21.11 and FM Approved for use in municipal water distribution systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed waterworks contractors or utility plumbers working on pressurized water mains. The line must be depressurized and isolated before fitting the restraint assembly. Tighten side clamping bolts and restraining rod nuts evenly in a cross pattern per standard torquing practice for ductile iron restraint hardware. Follow applicable AWWA installation guidelines and local water authority requirements for joint restraint on PVC pressure pipe.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits Pipe Size\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connection 1\u003c\/strong\u003e: Bell End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connection 2\u003c\/strong\u003e: Spigot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Ductile Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Red Alkyd Paint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClamping Ring Standard\u003c\/strong\u003e: ASTM A-536 Grade 65-45-12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt and Nut Standard\u003c\/strong\u003e: ASTM A-449, Zinc-Plated per B-663 Type III\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod and Nut Yield Strength\u003c\/strong\u003e: 45,000 psi minimum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod and Nut Tensile Strength\u003c\/strong\u003e: 60,000 psi minimum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAWWA Standards\u003c\/strong\u003e: AWWA C-111, AWWA C-900, AWWA C-905\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Standard\u003c\/strong\u003e: ANSI A21.11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFM Approved\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStyle\u003c\/strong\u003e: PV-Lok\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIGMA CORPORATION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: PWP-C8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA CORPORATION","offers":[{"title":"Default Title","offer_id":51467422892338,"sku":"PWP-C8","price":211.74,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313945110.jpg?v=1783904123","url":"https:\/\/voomisupply.com\/products\/sigma-corporation-pwp-c8-pv-lok-8-in-pipe-joint-restraint","provider":"Voomi Supply","version":"1.0","type":"link"}