Explosion Proof Cable Gland Supplier — ATEX, IECEx & Hazardous Area Certified
Hazardous area cable gland
When you are sourcing cable glands for a Zone 1 refinery, an offshore platform, a mining operation, or any classified hazardous area installation — standard cable glands are not an option. You need components that are certified, traceable, and purpose-built for environments where the wrong specification could have catastrophic consequences.
At Difvan, we manufacture and supply a complete range of explosion proof cable glands — our BDM series — certified to ATEX and IECEx standards, covering Ex d (flameproof) and Ex e (increased safety) protection concepts for gas and dust hazardous areas.
We work directly with EPC contractors, procurement teams, and engineering firms across oil & gas, petrochemical, offshore, and mining sectors worldwide. If your project requires certified hazardous area cable glands in volume — with documentation, traceability, and consistent supply — you have found the right manufacturer.
Is This Page for You?
If you are working on any of the following, you are in the right place:
- An EPC contractor specifying cable glands for a Zone 1 or Zone 2 classified oil & gas facility
- A procurement manager sourcing ATEX or IECEx certified glands for a petrochemical plant expansion
- An offshore engineering firm needing IP68 explosion proof glands for a platform cable entry project
- A mining operator requiring flameproof cable glands for underground or surface hazardous installations
- A distributor building stock of certified hazardous area cable glands for the North American, European, or Middle Eastern market
If your project involves standard panels, control cabinets, or general industrial enclosures without hazardous area classification, our standard cable gland range is the right starting point. This page covers certified explosion proof and hazardous location products only.
Our Explosion Proof Cable Gland Range — BDM Series
Our BDM series covers every major hazardous area cable gland requirement — from standard unarmoured cables in Ex e enclosures to armoured cables in Ex d flameproof applications. Every series in the BDM range is certified to ATEX (II 2 G) and IECEx standards and available in brass and SS-316 stainless steel.
Series | Type | Certification | Cable Entry | Hazardous Zone | Material |
|---|---|---|---|---|---|
BDM-17 | Flameproof (Ex d) | ATEX / IECEx | Metric / NPT / PG | Zone 1 & 2 / Div. 1 & 2 | Brass / SS-316 |
BDM-2 | Single Compression (Ex e) | ATEX / IECEx | Metric / NPT | Zone 1 & 2 | Brass / Nickel Plated |
BDM-3 | Flameproof Armoured (Ex d) | ATEX / IECEx | SWA / STA / Wire Armour | Zone 1 & 2 | Brass / SS-316 |
BDM-4 | Ex d Armoured (Double Comp.) | ATEX / IECEx | Zone 1 / Div. 1 | Brass / SS-316 | |
BDM-5 | Explosion-proof (Ex e) | ATEX / IECEx | Metric / PG | Zone 1 & 2 | Nickel Plated Brass |
BDM-6 | Explosion-proof (Ex d/e) | ATEX / IECEx | Metric / NPT / PG | Zone 1 & 2 / Div. 1 | Brass / SS-316 |
BDM-21 | Armoured (Ex d) | ATEX / IECEx | SWA / Armoured | Zone 1 & 2 | Brass / SS-316 |
All BDM series glands are available in metric, NPT, and PG thread entries. Custom cable ranges, extended thread lengths, and special surface treatments (hot-dip galvanised, electroless nickel plated) are available for bulk and OEM orders.
Ex d vs Ex e — Which Protection Concept Do You Need?
Specifying the wrong protection concept for your hazardous area cable gland is a compliance failure — not just a technical one. Here is a clear guide to help you and your team get it right:
Feature | Ex d — Flameproof | Ex e — Increased Safety |
|---|---|---|
Protection Method | Contains internal ignition — prevents flame from escaping to the external atmosphere | Eliminates sources of ignition — enhanced construction prevents sparks or excessive heat |
Cable Gland Role | Provides a flameproof path between cable and enclosure — critical mechanical joint | Seals cable entry to prevent ingress of flammable atmosphere — rubber seal + IP rating critical |
IP Requirement | IP65 minimum; IP68 for submersible installations | IP54 minimum; IP65 or IP68 recommended for outdoor |
Zone Suitability | Zone 1 and Zone 2 / Division 1 and 2 | Zone 1 and Zone 2 / Division 1 and 2 |
Typical Application | Oil & gas wellheads, refineries, chemical reactors | Offshore junction boxes, pump motors, gas compression |
Difvan Series | BDM-17, BDM-3, BDM-4, BDM-21 | BDM-2, BDM-5, BDM-6 |
If you are working from an area classification document or ATEX certificate for your enclosure, the protection concept will already be specified. If you need help interpreting your hazardous area documentation, contact us — we regularly support EPC teams on cable gland specification.
Hazardous Area Zones — Classification Guide & Cable Gland Requirements
Your project’s hazardous area classification determines which cable gland certification level is required. Use the table below as a reference — but always verify against your site’s official area classification document.
Zone / Division | Standard | Hazardous Atmosphere | Typical Location | Required Cable Gland |
|---|---|---|---|---|
Zone 0 | ATEX / IECEx | Explosive gas present continuously | Inside storage tanks, enclosed vessels | Ex ia / very high protection |
Zone 1 | ATEX / IECEx | Explosive gas likely during normal operation | Oil pump rooms, refinery processing areas | Ex d or Ex e (BDM-17, BDM-6) |
Zone 2 | ATEX / IECEx | Explosive gas present occasionally | Offshore decks, petrochemical peripheries | Ex d or Ex e (BDM-2, BDM-5) |
Zone 21 | ATEX / IECEx | Combustible dust — likely in normal operation | Grain handling, cement plants, coal mills | Dust-rated Ex tb |
Zone 22 | ATEX / IECEx | Combustible dust — occasionally present | Peripheral zones of Zone 21 areas | Dust-rated Ex tc |
Division 1 | NEC (USA/Canada) | Flammable gas/vapour — normal conditions | North American refineries, chemical plants | NPT thread, ATEX or UL listed gland |
Division 2 | NEC (USA/Canada) | Flammable gas/vapour — abnormal conditions | Offshore platforms, gas processing | NPT thread Ex e or general purpose sealed |
Note: Zone 0 requires the highest level of protection (Category 1 / Ex ia). Cable glands for Zone 0 gas areas are a specialist requirement — please contact us directly with your project specification and we will advise on the appropriate solution.
ATEX vs IECEx vs NEC — Understanding the Certifications
If your project spans multiple regions — or if you are stocking glands for global distribution — understanding which certification applies where will save you significant procurement headaches down the line.
Feature | ATEX | IECEx | NEC / UL (USA) |
|---|---|---|---|
Full Name | ATmosphères EXplosibles | IEC System for Explosion Protection | National Electrical Code / UL Listed |
Governing Body | European Commission (EU) | IEC / IECEE | NFPA / Underwriters Laboratories |
Primary Market | European Union, Middle East | Global (60+ countries) | USA, Canada, Mexico |
Zone System | Zone 0 / 1 / 2, Zone 20 / 21 / 22 | Zone 0 / 1 / 2, Zone 20 / 21 / 22 | Division 1 & 2, Class I / II / III |
Marking Format | CE + Ex marking | IECEx marking | UL listing / FM approval |
Difvan Supply | Yes — available on request | Yes — available on request | NPT thread available, UL on request |
For most global projects, IECEx certification is the most widely accepted because it is recognised in over 60 countries. ATEX is mandatory for EU installations. For North American projects under NEC, NPT threaded glands with appropriate UL listing or FM approval apply. We can supply to all three standards — advise your project region when requesting a quote.
Industries We Supply — Hazardous Area Cable Glands
Our explosion proof cable glands are currently specified and supplied into the following sectors. If your industry is not listed, contact us — hazardous area applications are broader than most people realise.
01
Oil & Gas — Onshore and Upstream
Wellheads, gathering stations, flow control units, and processing skids all require Zone 1 or Division 1 certified cable glands. Our BDM-17 (Ex d) and BDM-6 (Ex d/e) series are the standard specification for this environment. Available in brass and SS-316 for corrosive process environments.
02
Offshore & Marine Platforms
Offshore installations face the dual challenge of explosive atmosphere classification and permanent saltwater exposure. We supply SS-316 BDM series glands with IP68 sealing — rated for submersion — for platform cable penetrations, subsea junction boxes, and topside electrical equipment.
03
Petrochemical & Chemical Processing
Refineries, cracker units, distillation columns, and storage areas all involve classified hazardous zones. EPC contractors on these projects specify our BDM series for cable entries into Ex d and Ex e enclosures throughout the plant.
04
Mining — Underground & Surface
Mining operations involve methane-risk underground environments and dust-explosive surface areas. Our flameproof cable glands meet the Zone 1 gas classification requirements, and our dust-rated variants cover Zone 21 and Zone 22 requirements for surface facilities.
05
Pharmaceutical & Chemical Manufacturing
Solvent handling areas, spray drying facilities, and chemical batch processing zones frequently carry Zone 1 or Zone 2 classification. Our compact BDM-5 and BDM-2 series in metric thread are commonly specified for these installations.
06
Power Generation & Utilities
Gas turbine enclosures, fuel handling areas, and transformer rooms in power stations require Zone 2 or Division 2 rated cable entries. Our BDM-5 (Ex e) series is a cost-effective solution for lower-risk Zone 2 applications.
07
LNG, Terminal & Storage Facilities
Liquefied natural gas terminals, gas storage facilities, and fuel distribution infrastructure all require certified explosion proof cable glands throughout. We supply to terminal construction projects directly and through EPC frameworks.
Certifications, Standards & Documentation
In hazardous area procurement, the certification is not secondary to the product — it IS the product. Every explosion proof cable gland we supply comes with the documentation your project, your client, and your safety audit require.
- ATEX Certification — II 2 G (Category 2, Gas Group) for Zone 1 and Zone 2 applications
- IECEx Certification — internationally recognised for global hazardous area projects
- CE Marking — all BDM series products comply with applicable EU directives
- RoHS Compliant — manufactured without restricted hazardous substances
- IEC 60079 series — explosion protection standard compliance (Ex d, Ex e, Ex tb)
- IEC 60529 — IP65 and IP68 ingress protection tested and certified
- IEC 62444 — cable glands for electrical installations standard
- ANSI/ASME B1.20.1 — NPT thread conformance for North American specifications
- Material Test Reports (MTR) — SS-316 and brass material traceability on request
- Declaration of Conformity (DoC) — supplied as standard with every BDM order
For projects requiring a full certification data pack — CoC, DoC, IP test report, material certificates, installation instructions, and product datasheet — advise at the time of enquiry and we will assemble your documentation package before shipment.
How to Specify the Right Explosion Proof Cable Gland — Checklist
Before you place an enquiry or order, these are the key parameters our team will need to select the right BDM series gland for your project. Use this as your specification checklist:
- Hazardous area zone or division — Zone 1, Zone 2, Division 1, or Division 2
- Protection concept required — Ex d (flameproof) or Ex e (increased safety)
- Certification standard — ATEX, IECEx, NEC/UL, or combination
- Cable type — unarmoured, SWA armoured, STA armoured, screened
- Cable outer diameter — minimum and maximum range required
- Thread entry type — Metric (M-thread), NPT, or PG
- Thread size — e.g., M20, M25, M32, 1/2″ NPT, 3/4″ NPT
- Enclosure material — important for earthing continuity and galvanic compatibility
- Environment — indoor, outdoor, marine/offshore, underground
- Operating temperature range — ambient and cable conductor temperature
- Material preference — brass standard or SS-316 for corrosive environments
- Quantity and project timeline — for lead time and stocking confirmation
Send us these details and we will return a specific BDM series recommendation with datasheet, certificate reference, and project pricing within 24 hours.
Why Procurement Teams and EPC Contractors Choose Difvan
There are many manufacturers of explosion proof cable glands. Here is why project buyers and distributors who have tried multiple suppliers end up consolidating their hazardous area cable gland supply with us:
What We Offer | What This Means for Your Project |
|---|---|
Direct Manufacturer | No middlemen. You deal with the source — faster decisions, no miscommunication on spec, and no markup from a distributor who doesn’t understand your requirement. |
ATEX + IECEx Certified Range | Your project documentation is covered. Every BDM series gland comes with traceable certification that passes ITP (Inspection and Test Plan) audits without delays. |
SS-316 & Brass Available | One supplier for both standard and corrosive-environment specifications. No need to split your procurement between multiple vendors. |
Full Documentation Pack | CoC, DoC, IP test reports, MTRs, installation instructions — assembled to your project’s document control requirements, not generic PDFs. |
Armoured & Unarmoured Range | From simple Ex e glands for unarmoured cable to full Ex d armoured glands for SWA — the complete BDM series covers your full cable schedule. |
Bulk & Framework Supply | We support call-off orders, consignment stocking, and framework agreements for large or ongoing projects. No need to re-tender every purchase order. |
25+ Years Manufacturing | Our factory in Yueqing, China has produced industrial cable management components since 1997. Explosion proof is a core product category — not a side line. |
60+ Country Export Track Record | We have successfully supplied to hazardous area projects in Saudi Arabia, UAE, UK, Australia, India, Malaysia, Nigeria, and North America, among others. |
Request a Quote — Explosion Proof Cable Glands
If your project is at specification stage, tender stage, or ready to order — we want to hear from you. Send us your cable schedule, area classification, and quantity requirements and we will respond with a specific BDM series recommendation, certification references, and project pricing within 24 hours.
Frequently Asked Questions — Explosion Proof Cable Glands
Q1: What is the difference between Ex d and Ex e explosion proof cable glands?
Q2: What certifications do your explosion proof cable glands carry?
Q3: Can you supply explosion proof cable glands for armoured cables?
Q4: What thread types are available for your hazardous area cable glands?
Q5: Do you supply explosion proof cable glands for offshore and subsea applications?
Q6: What is the minimum order quantity for bulk supply of explosion proof cable glands?
Q7: Can Difvan provide ATEX documentation for project tender submissions?
Yes — this is a standard part of our supply. We provide full ATEX and IECEx certification documentation including: Certificate of Conformity (CoC), Declaration of Conformity (DoC), technical file summary, IP test reports, material traceability records, and product datasheet. For EPC contractors and project buyers with specific documentation requirements, please advise at the time of enquiry and we will confirm which certifications apply to your chosen series.
Contact Difvan Directly
Response within 24 hours. Factory direct — no middlemen.
No.1 HongQi Road, Xinguang Industrial Zone,
Liushi, Yueqing, Wenzhou, Zhejiang, China 325603
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