Pipeline Corrosion Control

MMO Linear Wire Anodes by Farwest Corrosion

Created by: Pipeline Corrosion Control

Last updated 11/2025

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Description

Product Description Farwest Corrosion’s MMO linear wire anode is an ideal product for use when a low-current, distributed cathodic protection system is needed. Typical uses for this style of anode include the protection of tank bottoms, pipeline systems and other underground structures. At the heart of the anode system is high-grade, titanium wire with a Mixed Metal Oxide (MMO) catalyst coating, which serves as the anode. There are three choices of anode wire diameters, which dictates the current output rating for the anode. The anode wire is prepackaged in a porous, non-woven fabric “sock” that contains calcined petroleum coke breeze to reduce the resistance-to earth of the anode circuit and to increase the life of the anode. The sock diameter is approximately 1.5 inches and is installed right from the factory provided reel into the trench. Material Specification:Substrate: ASTM B348 Grade I / II TitaniumCatalyst: Mixed Metal OxideCable: #6 AWG cable with either HMWPE or Kynar/HMWPE insulation.MMO wire-to-cable connections are crimped at 5 to 10 meter intervals as required Product Advantages:Easy handling and installationCost effectiveUp to 50-year service life depending on output Anode Header CableThe header cable, in parallel to the anode wire, is #6 AWG stranded copper with either high molecular weight polyethylene (HMWPE) insulation or a dual insulation of Kynar/HMWPE. The MMO anode wire is connected to the header cable via a high-pressure crimp connector to ensure a low resistance connection. That connection is then sealed in a splice kit with epoxy resin to prevent water intrusion. Connection Diagram For pricing, delivery information or additional technical information, please contact a Farwest Corrosion representative for assistance at 888-532-7937 or by email at sales@farwestcorrosion.com Specification MMO Anod Wire with Header Cable MMO wire diameter 1.0mm 1.5mm 3.0mm Titanium substrate ASTM B348 Grade I / II Mixed Metal Oxide Catalyst Ir-Ta Est. current output, 20 years 20 mA/ft (67mA/m) 27 mA/ft (89mA/m) 59 mA/ft (195mA/m) Est. current output, 30 years 13 mA/ft (45mA/m) 19 mA/ft (65mA/m) 39 mA/ft (130mA/m) Est. current output, 50 years 8.5 mA/ft (28mA/m) 12.5 mA/ft (41mA/m) 23 mA/ft (78mA/m) Backfill Calcium Petroleum Coke Sock material Porous non-woven fabrics Sock dimension 1.5 Inches (38 mm) diameter Lenght per reel 492 feet (150 meters). Customized lengths can be provided. Customized reel lengths and current output variations are available at request. Standard Reel Specification Anode Wire Type Reel Net Weight Gross Weight Reel Dimensions 1.0 mm diameter1.5 mm diameter3.0 mm diameter 1 1,389 lbs.(630 Kgs) 1,620 lbs (735 Kgs) 48” x 48” x 39”(1,200 mm x 1,200 mm x 1,000 mm)