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Myers Hubs. Crouse-Hinds Training Module. Myers Hubs. Outline. History Applications Product Features Certifications and Compliances Types of Myers Hubs Additional Hubs Available Marketing Materials. Myers Hubs. History. Pre-1949
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Myers Hubs Crouse-Hinds Training Module
Myers Hubs Outline • History • Applications • Product Features • Certifications and Compliances • Types of Myers Hubs • Additional Hubs Available • Marketing Materials
Myers Hubs History • Pre-1949 • Welding was standard to bond coupling to enclosure, to maintain a watertight connection and ground for conduit entering enclosure. • 1949 • Myers Hubs established. Invented the Scru-Tite® Hub. • Watertight / Dust Tight Joint. • Positive Electrical Ground. • UL / CSA Approved. • Eliminated need for welding. • 1997 • Myers acquired by Cooper Crouse-Hinds.
Myers Hubs Applications • Used in wash down, harsh industrial, outdoors, hazardous, corrosive / chemical atmospheres, for grounding, indoor rigid conduit, OEM, and overseas applications (metric adapters). • In conjunction with enclosures / wireways fabricated from sheet steel, stainless steel, cast, and non-metallic materials. • Industries such as refineries, paper mills, food processing, breweries, waste water treatment facilities, chemical plants, pharmaceutical plants, steel mills, and marine applications.
Myers Hubs Product Features • Vibration Proof • Strong, oversize nut with radial serrations assures flush installation and positive grounding. • Optional Grounding Screw For Added Safety • Captive “O-Ring” Gasket • Impervious to corrosive moisture and petroleum products. Buna-N gasket assures positive water and dust-tight installations. • Precision Machine Cut NPT Threads • Positive fit and simple installation.
Myers Hubs Product Features • No Welding • Unique serrations on both nut and hub bite into metal assuring a positive electrical ground. (UL approved for use with service entrance conduit.) • Posi-Lok Insulated Throat • Cannot come out. Made from flame retardant Lexan®. Standard in sizes from 1/2” through 4” • Fit Standard Knockouts. • Hub Basic Scru-Tite zinc 1/2” – 2” products available with optional chrome plate finish. (add suffix - CP)
Myers Hubs Certifications and Compliances • UL Listed • CSA Certified • Class I, Division 2 NEC 501-4(b) • Class II, Division 1 & 2 NEC 502-4(a)(b) • Class III, Division 1 & 2 NEC 503-3(a)(b) • For use with NEMA Enclosures 2, 3, 3R, 4, 4X, and 12. (Check hub type for individual compliances) • Optional IEC / CENELEC Hubs for: • Zone 1, Ex e II • Zone 1, Eex e II • Zone 1, Aex e II
Myers Hubs - Types Scru-Tite® Hub - ST and STA Series • Available in zinc or aluminum. • Sizes range from 1/4” through 6”. Ground Hub - STG and STAG Series • Available in zinc or aluminum. • Sizes range from 1/2” through 6”. • Provides ground screw on locknut.
Myers Hubs - Types Stainless Steel Hub - SSTG Series • 316 stainless steel construction resists corrosion and pitting in chemical atmospheres. • Sizes range from 1/2” to 2” • Grounding Screw provided on lock nut.
Myers Hubs - Types Through Bulk-Head Fitting - STTB, STTBA, STTTB, STTTBA Series. • Available in zinc or aluminum. • Available with or without a nipple. • Sizes range from 1/2” - 2” • For installation of conduit through fire wall or partial bulkheads.
Myers Hubs - Types IEC / CENELEC HUB - STGK or SSTGK Series • Available in zinc or stainless steel. • Sizes range from 1/2” - 2” in zinc. • Sizes range from 1/2” - 2” in stainless. • Class I, Zone 1, Ex e II - IEC approved. • Class I, Zone 1, EEx e II - CENELEC approvals through DEMKO (European test lab) • Class I, Zone 1, AEx e II - NEC Article 505 approved. • Hub includes increased safety ground terminal and locking screw on lock nut.
Myers Hubs - Types Metric to NPT Adapter - STM and SSTM Series • Available in zinc or stainless steel. • Sizes ranges: • M20 to 1/2” up to ….. • M75 to 2 1/2” (zinc) • M63 to 2” (stainless steel) • Used to convert a threaded metric entry to an NPT entry.
Myers Hubs - Types Ground Nut - STGN and STAGN Series • Available in zinc or aluminum. • In zinc sizes range from 1/2” - 2”. • In aluminum sizes range from 1/2” – 6”
Myers Hubs - Types Cap-Off - STC and STAC Series • Available in zinc or aluminum. • Zinc Sizes 1/2” - 2”. • Aluminum Sizes 1/2” – 1” • Economical way to cap-off a knock out. Drain Plug • Available in aluminum or stainless steel. • 1/2” trade size. • Available with locknut for 1/2” KO or with NPT threads for threaded opening. • Designed to drain any accumulated condensation.
Additional Hubs Raintight Malleable Iron Conduit Hubs • Product Features • Male thread type • Tapered Female thread for rigid conduit & IMC • Recessed O-ring gasket assures raintight & dust tight connections • Insulated throat provides smooth pulling surface • Locking screw on nut doubles as a grounding screw for added safety • Compete sizes range from 1/2” – 6”
Additional Hubs Iron Space Saver Conduit Hubs • Product Features • Male thread is on the nut for space saving • Quick and easy when installing rigid conduit nipple between two existing enclosures • Insulated throat provides smooth pulling surface • Furnished with SG sealing gasket • Hub fits standard knockouts. No special tools required
Myers Hubs - Marketing Materials • Commercial Products Catalog • Cross Reference Guide • Commercial Products Pocket Guide • Myers Hubs Product Brochure • www.crouse-hinds.com