Special Application Flameproof Enclosures / Custom Explosion Proof Enclosures India
Beyond standard product categories, Trimiti Electricals engineers and manufactures a specialised range of flameproof enclosures for non-standard and application-specific requirements. Also referred to as custom explosion proof enclosures, special purpose Ex-proof housings, or bespoke flameproof enclosures, these products are designed where off-the-shelf solutions do not meet the specific functional, mechanical, or dimensional requirements of an industrial application.
Our special application enclosure range covers everything from flameproof solenoid valve enclosures and flow meter housings to rheostat enclosures, hooters, heater terminal boxes, and manual call points. Every enclosure is designed and manufactured to IS/IEC 60079-1 requirements, ensuring it maintains Ex d certification integrity while performing its specific functional purpose in the hazardous area.
Available Product Variants
i) Flameproof Slip Ring Motor Enclosure
ii) Flameproof Solenoid Valve and Solenoid Valve Terminal Enclosure
iii) Flameproof Flow Meter Enclosure
iv) Flameproof Float Switch Enclosure
v) Flameproof Weighing Scale Enclosure
vi) Flameproof Enclosure Horn
vii) Flameproof Rheostat Enclosure
viii) Flameproof Hooter / Audible Alarm Enclosure
ix) Flameproof Heater Terminal Enclosure / Flameproof Heater
x) Flameproof Manual Call Point (Fire Alarm)
Industries & Applications
These special application enclosures find use in oil & gas production facilities (solenoid valve control, flow metering), pharmaceutical plants (weighing scale enclosures in solvent zones), chemical manufacturing (float switch enclosures for flammable liquid vessels), petrochemical refineries (rheostat-controlled process drives), and fire safety system installations (manual call points in Ex areas). Any device that must operate within a hazardous zone but does not fit a standard product category requires a custom Ex d enclosure.
Why Choose Trimiti Electricals for Special Application Enclosures?
• In-house engineering capability for custom enclosure design from first principles
• Experience with a wide variety of non-standard applications and functional requirements
• All custom enclosures designed and manufactured to IS/IEC 60079-1 Ex d standards
• Short lead times for special designs — engineering review to production within weeks
• Ability to accommodate solenoid valves, flow meters, load cells, and other third-party devices
• Single-source responsibility: Trimiti designs, manufactures, and takes certification responsibility
Frequently Asked Questions
Q1. What is a flameproof solenoid valve enclosure?
A flameproof solenoid valve enclosure houses the electrical solenoid coil of a process control valve in an Ex d certified enclosure. The valve actuator itself is typically an intrinsically safe or Ex d device; the terminal enclosure provides a certified connection point for the control wiring in the hazardous area.
Q2. Can Trimiti design an enclosure for a specific brand of flow meter?
Yes. We regularly design custom flameproof enclosures sized and arranged to fit specific flow meter models from Endress+Hauser, Yokogawa, ABB, and other manufacturers. Please provide the meter dimensions and display/keypad specifications for a design proposal.
Q3. What is a flameproof hooter/audible alarm?
A flameproof hooter or audible alarm is an explosion proof device that produces an audible alert signal in hazardous areas — used for process alarms, fire alarms, and equipment fault alerts in Zone 1 and Zone 2 locations.
Q4. How long does it take to design and deliver a custom enclosure?
Typical lead times for custom enclosures are 3–6 weeks from approved drawing, depending on complexity and size. Simple variants (standard box with modified entry pattern) may be faster; complex multi-function enclosures may require slightly longer. Please discuss your timeline at the time of enquiry.
Q5. Can a flameproof heater terminal enclosure house the heating element as well?
Yes. We manufacture flameproof heater assemblies where both the terminal connection and the heating element are housed within a single certified enclosure, suitable for use in solvent storage areas, sample conditioning, and winterisation heating in hazardous zones.
