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1、Myers HubsCrouse-Hinds Training Module汽車防盜器 http:/z Historyz Applicationsz Product Featuresz Certifications and Compliancesz Types of Myers Hubsz Additional Hubs Available z Marketing MaterialsOutlineMyers HubsPre-1949 Welding was standard to bond coupling to enclosure, to maintain a watertight conn

2、ection 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.HistoryMyers HubsUsed in wash down, harsh ind

3、ustrial, 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

4、, paper mills, food processing, breweries, waste water treatment facilities, chemical plants, pharmaceutical plants, steel mills, and marine applications.ApplicationsMyers Hubs1 Vibration Proof Strong, oversize nut with radial serrations assures flush installation and positive grounding.2 Optional G

5、rounding Screw For Added Safety3 Captive “O-Ring” Gasket Impervious to corrosive moisture and petroleum products. Buna-N gasket assures positive water and dust-tight installations.4 Precision Machine Cut NPT Threads Positive fit and simple installation.Myers HubsProduct Features5 No Welding Unique s

6、errations on both nut and hub bite into metal assuring a positive electrical ground. (UL approved for use with service entrance conduit.)6 Posi-Lok Insulated Throat Cannot come out. Made from flame retardant Lexan. Standard in sizes from 1/2” through 4”Myers HubsProduct FeaturesFit Standard Knockout

7、s.Hub Basic Scru-Tite zinc 1/2” 2” products available with optional chrome plate finish. (add suffix - CP) 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,

8、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 IIMyers HubsCertifications and Compliances Available in zinc or aluminum. Sizes range from 1/4” through 6”.Myers Hubs - TypesScru-Tite Hub - ST and STA SeriesGround Hub

9、 - STG and STAG Series Available in zinc or aluminum. Sizes range from 1/2” through 6”. Provides ground screw on locknut. 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 - TypesStainle

10、ss Steel Hub - SSTG SeriesMyers 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. Available in zinc or stainless

11、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 term

12、inal and locking screw on lock nut.Myers Hubs - TypesIEC / CENELEC HUB - STGK or SSTGK Series Myers Hubs - TypesMetric 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 threa

13、ded metric entry to an NPT entry.Available in zinc or aluminum.In zinc sizes range from 1/2” - 2”.In aluminum sizes range from 1/2” 6”Myers Hubs - TypesGround Nut - STGN and STAGN SeriesMyers Hubs - TypesCap-Off - STC and STAC SeriesDrain PlugAvailable in zinc or aluminum.Zinc Sizes 1/2” - 2”.Alumin

14、um Sizes 1/2” 1” Economical way to cap-off a knock out. 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 HubsRaintight Malleable Iron Conduit HubsProduct F

15、eatures 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 HubsIron Space Saver Conduit HubsProduct 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