2 Myers Hubs Outline History Applications Product Features Certifications and CompliancesTypes of Myers HubsAdditional Hubs AvailableMarketing Materials
3 Myers Hubs History Pre-1949 Welding was standard to bond coupling to enclosure, to maintain a watertight connection and ground for conduit entering enclosure.1949Myers Hubs established. Invented the Scru-Tite® Hub.Watertight / Dust Tight Joint.Positive Electrical Ground.UL / CSA Approved.Eliminated need for welding.1997Myers acquired by Cooper Crouse-Hinds.
4 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.
5 Myers Hubs Product Features Vibration Proof Strong, oversize nut with radial serrations assures flush installation and positive grounding.Optional Grounding Screw For Added SafetyCaptive “O-Ring” GasketImpervious to corrosive moisture and petroleum products. Buna-N gasket assures positive water and dust-tight installations.Precision Machine Cut NPT ThreadsPositive fit and simple installation.
6 Myers Hubs Product Features No Welding Posi-Lok Insulated Throat 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 ThroatCannot 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)
7 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 IIZone 1, Eex e IIZone 1, Aex e II
8 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 SeriesAvailable in zinc or aluminum.Sizes range from 1/2” through 6”.Provides ground screw on locknut.
9 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.
10 Myers Hubs - TypesThrough 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.
11 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.
12 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.
13 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”
14 Myers Hubs - Types Cap-Off - STC and STAC Series Drain Plug Available in zinc or aluminum.Zinc Sizes 1/2” - 2”.Aluminum Sizes 1/2” – 1”Economical way to cap-off a knock out.Drain PlugAvailable 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.
15 Additional Hubs Raintight Malleable Iron Conduit Hubs Product Features Male thread typeTapered Female thread for rigid conduit & IMCRecessed O-ring gasket assures raintight & dust tight connectionsInsulated throat provides smooth pulling surfaceLocking screw on nut doubles as a grounding screw for added safetyCompete sizes range from 1/2” – 6”
16 Additional Hubs Iron Space Saver Conduit Hubs Product Features Male thread is on the nut for space savingQuick and easy when installing rigid conduit nipple between two existing enclosuresInsulated throat provides smooth pulling surfaceFurnished with SG sealing gasketHub fits standard knockouts. No special tools required