BDM-21 Hexagonal Flameproof Barrier Ex d Cable Gland
BDM-21 hexagonal single compression armored cable gland with an outer clamping seal and inner putty compound barrier.
- Brass, nickel-plated brass, SS304 or SS316 body options.
- Specified IP66, IP67 and IP68 protection (IP68: 1 m, 1 h).
- 20 sizes with separate inner sheath, outer sheath and armor ranges.
- Metric and NPT thread options; G thread for Ex e and Ex t only.
- Standard nylon washer and locknut, except for NPT versions.
Обзор
The YOCL ELECTRIC BDM-21 Hexagonal Flameproof Barrier Ex d Cable Gland uses a single compression armored construction with an outer clamping seal and an inner putty compound barrier. The hexagonal metal body is available in brass, nickel-plated brass, SS304 and SS316.
The supplied specification lists hazardous-area applications in Zones 1, 2, 21 and 22. Metric and NPT options are listed for the Ex applications described below; G-thread options are restricted to increased safety and dust-protection applications.
Характеристики
- Compound barrier construction: Inner putty compound sealing with an outer clamping seal.
- Hexagonal body: Defined wrench flats for handling during assembly.
- Armored cable selection: Model-specific inner sheath, outer sheath and armor thickness data.
- Body material options: Brass, nickel-plated brass, SS304 and SS316.
- Thread options: Standard metric sizes and NPT/G nominal sizes, with separately listed CNEx custom metric thread options.
Технические характеристики
| Parameter | Specification |
|---|---|
| Модель | BDM-21 |
| Type | Hexagonal single compression armored type |
| Sealing | Outer clamping seal; inner putty compound barrier |
| Body material options | Brass; nickel-plated brass; SS304; SS316 |
| Sealing material options | Silicone rubber; neoprene; PTFE (Teflon); PA6 |
| Operating temperature options | −40 °C to +100 °C / −60 °C to +80 °C, depending on configuration |
| Supplied Ex marking | Ex db IIC Gb; Ex eb IIC Gb; Ex tb IIIC Db, subject to thread configuration |
| Ingress protection | IP66; IP67; IP68 (1 m, 1 h) |
| Listed hazardous area applications | Zone 1; Zone 2; Zone 21; Zone 22 |
| Thread options | Metric; NPT; BSP (G) |
| G-thread application restriction | Ex e and Ex t only; not listed for Ex d |
| Stated flammability classification | UL 94 V-0 |
| Approvals stated in supplied specification | IECEx; ATEX; EAC (CUTR); CNEx; CCC |
| Standards listed in supplied specification | IEC/EN 60079-0; IEC/EN 60079-1; IEC/EN 60079-31; IEC/EN 60079-7; IEC/EN 60529; GB 3836 |
| Standard accessories | Nylon washer and locknut, except for NPT versions |
| Optional accessories | Earth tag; PVC shroud; serrated washer; red fibre washer; A/B putty compound |
Temperature limits and approval scope depend on the selected configuration. The supplied data does not map the temperature options to sealing materials or provide certificate numbers. UL 94 V-0 is the stated flammability classification; the specific material scope is not identified.
Размеры
Cable and Armor Selection
Dimensions are in millimetres, except the NPT/G nominal thread sizes in inches. Strict less-than limits for the inner sheath A are retained as supplied.
| Size | Metric entry thread AG | NPT/G nominal size (inch) | Inner sheath A (mm) | Outer sheath B (mm) | Armor range h (mm) |
|---|---|---|---|---|---|
| 16A | M16×1.5 | 3/8 | <8 | 5.5–12 | 0.3–1.0 |
| 16B | M16×1.5 | 3/8 | <8 | 9.5–16 | 0.3–1.0 |
| 20A | M20×1.5 | 1/2 | <11 | 5.5–12 | 0.3–1.0 |
| 20B | M20×1.5 | 1/2 | <11 | 9.5–16 | 0.3–1.0 |
| 20C | M20×1.5 | 1/2 | <15 | 12.5–20.5 | 0.3–1.0 |
| 25B | M25×1.5 | 3/4 | <15 | 12.5–20.5 | 0.3–1.0 |
| 25C | M25×1.5 | 3/4 | <21 | 17–26 | 0.4–1.2 |
| 32B | M32×1.5 | 1 | <21 | 17–26 | 0.4–1.2 |
| 32C | M32×1.5 | 1 | <27 | 22–33 | 0.4–1.4 |
| 40B | M40×1.5 | 1-1/4 | <27 | 22–33 | 0.6–1.9 |
| 40C | M40×1.5 | 1-1/4 | <33 | 28–41 | 0.6–2.2 |
| 50B | M50×1.5 | 1-1/2 | <33 | 28–41 | 0.8–2.3 |
| 50C | M50×1.5 | 1-1/2 | <42 | 36–52.6 | 0.8–2.3 |
| 63B | M63×1.5 | 2 | <42 | 36–52.6 | 0.9–2.4 |
| 63C | M63×1.5 | 2 | <54.5 | 46–64 | 0.9–2.4 |
| 75B | M75×1.5 | 2-1/2 | <54.5 | 46–64 | 0.9–2.4 |
| 75C | M75×1.5 | 2-1/2 | <66 | 57–78 | 0.9–2.4 |
| 80 | M80×1.5 | 3 | <66 | 57–78 | 0.9–2.4 |
| 90 | M90×1.5 | 3 | <75 | 68–88 | 0.9–2.8 |
| 100 | M100×1.5 | 4 | <90 | 83–103 | 0.9–2.8 |
Specify NPT or BSP (G) explicitly when ordering an inch-size entry thread. The shared nominal-size column does not imply the same Ex application for both thread standards.
External Dimensions
| Size | Maximum size D (mm) | Body length L1 (mm) | Entry thread length L (mm) |
|---|---|---|---|
| 16A | 29 | 60 | 16 |
| 16B | 29 | 60 | 16 |
| 20A | 29 | 60 | 16 |
| 20B | 29 | 60 | 16 |
| 20C | 37 | 60 | 16 |
| 25B | 37 | 60 | 16 |
| 25C | 44 | 67 | 16 |
| 32B | 44 | 67 | 18 |
| 32C | 55 | 73 | 18 |
| 40B | 55 | 73 | 18 |
| 40C | 67 | 81 | 18 |
| 50B | 67 | 81 | 20 |
| 50C | 73 | 102 | 20 |
| 63B | 73 | 102 | 21 |
| 63C | 89 | 105 | 21 |
| 75B | 89 | 105 | 22 |
| 75C | 105 | 105 | 22 |
| 80 | 105 | 105 | 22 |
| 90 | 115 | 105 | 23 |
| 100 | 130 | 105 | 24 |
L1 is the body length beyond the entry thread and L is the entry thread length, following the source drawing.
Custom Metric Threads — CNEx Configurations
The supplied specification lists the following non-standard metric threads for CNEx customization. Availability and the applicable certificate scope must be matched to the selected configuration; this list does not extend these custom threads to every approval listed above.
| Nominal thread diameter | Available pitch (mm) |
|---|---|
| M12 | 1.5 |
| M18 | 1.5 |
| M22 | 1.5 |
| M24 | 1.5 |
| M25 | 2.0 |
| M27 | 1.5 / 2.0 |
| M28 | 1.5 / 2.0 |
| M30 | 2.0 |
| M33 | 1.5 / 2.0 |
| M36 | 1.5 / 2.0 |
| M40 | 2.0 |
| M42 | 1.5 / 2.0 |
| M48 | 2.0 |
| M50 | 2.0 |
| M60 | 1.5 |
| M64 | 2.0 |
| M75 | 2.0 |
| M80 | 2.0 |
| M85 | 3.0 |
| M90 | 2.0 |
| M100 | 2.0 |
Custom-thread cable ranges and external dimensions are not separately supplied. Where two pitches are listed, specify the required pitch.
Accessories and Ordering
Specify BDM-21 size, body material, thread standard, diameter and pitch, inner and outer sheath diameters, armor thickness and required operating temperature configuration. Include the required Ex application and approval scope, particularly for custom threads.
The inner barrier uses compatible putty compound. Although A/B putty compound is listed as an optional accessory, the barrier sealing component is required for the barrier configuration; specify its supply if it is not already available separately.
Nylon washers and locknuts are listed as standard except for NPT versions. Earth tags, PVC shrouds, serrated washers and red fibre washers are optional. Compound formulation, curing procedure and installation torque should follow the documentation for the delivered configuration.