Marzolf™ flanges accommodate most variations of VanStone and lap joint style connections. Marzolf’s unique two-piece interleaving design allows rings to be installed after the stub ends or angle rings have been fused, welded, or glued; to simplify installation. Using MARZOLF™ two-piece flanges to replace cracked, broken, or corroded VanStone rings is instrumental to getting your facility back on line quickly, safely, and cost effectively. Our flanges save you money by, expediting repairs to reduce labor costs, and by minimizing down time to maximize productivity. Our line of stand alone rings are used in place of standard one piece rings on all types of piping including carbon steel, ductile iron, stainless steel, polyethylene, fiberglass, and even PVC and CPVC. Our line of backing rings fit behind molded fiberglass flanges and molded PVC and CPVC flanges. These backing rings facilitate higher bolt torques than customarily allowed on molded fiberglass and plastic rings. They also eliminate the cracking which commonly occurs on those types of molded flanges. If you need a split flange or two-piece backing ring for a particular line in your system, you can rely on us to provide it. If we don’t have the exact item you require, we will custom manufacture it for you. Our rings are made of standard materials and non-standard alloys. MARZOLF™ flanges and backing rings are made to most standard specifications, or configurations, including any national or international standard dimensions. Custom rings can be engineered and produced quickly. Please take the time to browse our catalog for a full range of your most commonly required items. A Combination of Engineered Form and Function MARZOLF™ flanges are designed, engineered, and manufactured to improve your operations by increasing your productivity and profitability, safely and efficiently.
Efficiency - By eliminating the need cut and re-weld pipe ends when replacing backing rings, MARZOLF™ flanges have proven to reduce replacement time by as much as 66%. Every minute spent on a redundant or lengthy repair operation is a minute where your production is stalled and your profits diminishing. Marzolf’s flanges are designed to significantly reduce replacement downtime, bringing your line back up in no time and putting money directly back into your budget.
Ease - No matter how complex your system is, MARZOLF™ flanges introduce an element of refreshing simplicity. You’ll find installation and replacement with MARZOLF™ flanges to be quick and effective.
Effectiveness - MARZOLF™ flanges utilize an interleaving two-piece design where the two half rings share common bolt holes and interlock around a pipe with rigidity and strength. This proven design has been used in the fluid process industries worldwide, since we invented it in 1955.
Materials, Coatings, and Applications
MARZOLF™ Two-Piece Lap Joint Flanges are made of carbon steel, 304L and 316L stainless steel, PVC/CPVC, and special alloys including Titanium, Hastelloy®, and several duplex and super duplex materials. Our most common coatings include electro-zinc plating, e-coat epoxy, Polytetrafluoroethylene (PTFE), and corrosion resistant paint. MARZOLF™ FLANGES are designed to fit steel and stainless tube and pipe stub ends and angle rings, polyethylene pipe stub ends and flange adapters, ductile iron pipe, fiberglass pipe, and PVC/CPVC/PVDF piping.
