Oil-filled transformers
Automatic water spray arranged around transformer surfaces, radiators and defined oil-fire exposure zones.
Engineered fixed water spray for transformers and defined industrial hazards
High Velocity Water Spray Systems in Mumbai & Across India
Hazard assessment, hydraulic calculation, nozzle layout, detection and deluge control, installation, acceptance testing and maintenance.
What is a high velocity water spray system?
A high velocity water spray system is a fixed open-nozzle arrangement designed to apply a calculated water discharge over specific equipment or hazard surfaces for fire control, extinguishment, cooling or exposure protection according to the approved design basis.
When the deluge valve opens, all nozzles in the selected zone discharge together. Nozzle type, pressure, angle, spacing and distance are engineered so the spray reaches the required surfaces despite equipment geometry and obstructions.
Reliance Fire Protection Systems supports survey, hydraulic design, supply, installation, testing, commissioning and maintenance from Mumbai for technically suitable projects across India.
Typical HVWS Applications
Oil-filled reactors
Project-specific protection coordinated with electrical isolation, equipment clearances, drainage and containment.
Lubricating-oil hazards
Selected machinery, bearings or oil systems where water spray is suitable for the fuel and equipment configuration.
Turbo-generator oil systems
Localised hazards assessed for spray coverage, shutdown interfaces, drainage and effects on adjacent equipment.
Industrial process equipment
Specific high-hazard surfaces requiring rapid cooling or fire control under an adopted water-spray design standard.
Not a universal solution
Water-reactive materials, incompatible electrical risks or hazards without adequate drainage require another strategy.
Main HVWS System Components
Dedicated water supply
Fire-water tank, pumps and distribution network sized for the hydraulically demanding zone and simultaneous requirements.
Deluge valve assembly
A normally closed control valve with trim, release, isolation, alarm, drain and test arrangements suited to the system.
Open spray nozzles
Nozzles selected for discharge coefficient, spray angle, droplet characteristics, pressure and protected-surface geometry.
Detection and release controls
Approved heat, flame or other detection with alarm, confirmation, release and electrical-isolation interfaces.
Pipework and supports
Hydraulically sized piping, strainers, fittings, supports and corrosion protection arranged without obstructing access.
Drainage and containment
Capacity to remove fire water and released oil safely, limiting pooling, spread and impact on nearby equipment.
How an Automatic HVWS System Operates
Design references: IS 15325:2020 is the Indian code of practice for fixed automatic high and medium velocity water spray systems. NFPA 15 addresses fixed water-spray design, installation and acceptance testing when adopted. Applicable CEA, OISD, insurer and authority requirements must also be checked for the project.
Critical Design and Testing Checks
Hydraulic demand
Calculate density, protected surface, nozzle flows, pipe losses and required pressure at the hydraulically remote nozzles.
Spray coverage
Coordinate nozzle angle, distance, orientation and overlap around radiators, bushings, conservators and obstructions.
Electrical coordination
Define detection, transformer trip, isolation, alarm and release sequence with the responsible electrical engineer.
Wind and environment
Outdoor spray distribution can be affected by wind, corrosion, contamination, freezing risk and equipment movement.
Safe drainage
Bunds, drains, oil-water separation and disposal routes must handle the design discharge and fire scenario.
Acceptance testing
Verify valve actuation, alarms, pressure, flow and actual spray distribution under a controlled approved test plan.
Safety limitation: An HVWS system is only one part of the fire strategy. It does not replace transformer protection relays, electrical isolation, separation, fire barriers, oil containment, drainage, hydrants, portable equipment, access control or emergency response. Water discharge near energised equipment requires approved clearances and interlocks.
High Velocity Water Spray Systems Across India
Project enquiries are supported across all Indian states and union territories, subject to hazard suitability, hydraulic design, water supply, drainage, site survey and approval requirements.
Andhra PradeshArunachal PradeshAssamBiharChhattisgarhGoaGujaratHaryanaHimachal PradeshJharkhandKarnatakaKeralaMadhya PradeshMaharashtraManipurMeghalayaMizoramNagalandOdishaPunjabRajasthanSikkimTamil NaduTelanganaTripuraUttar PradeshUttarakhandWest BengalAndaman and Nicobar IslandsChandigarhDadra and Nagar Haveli and Daman and DiuDelhiJammu and KashmirLadakhLakshadweepPuducherry
Key service locations: Mumbai, Navi Mumbai, Thane, Pune, Nagpur, Nashik, Ahmedabad, Surat, Vadodara, Bengaluru, Hyderabad, Chennai, Coimbatore, Kochi, Delhi NCR, Noida, Gurugram, Jaipur, Indore, Bhopal, Raipur, Kolkata and power or industrial project locations nationwide.
High Velocity Water Spray FAQs
What is a high velocity water spray system?
It is a fixed open-nozzle system that applies calculated water spray over specified hazard surfaces for the approved protection objective.
Where are HVWS systems commonly used?
Common applications include oil-filled transformers, reactors and selected industrial oil hazards where the design basis permits water spray.
How does an automatic HVWS system operate?
Detection initiates alarm and release logic, opens the deluge valve and supplies every open nozzle in the selected zone.
What is the difference between HVWS and MVWS?
Nozzle characteristics, droplet momentum and objectives differ; hazard analysis and the adopted criteria determine the correct choice.
Does an HVWS system replace transformer isolation and drainage?
No. Isolation, containment, drainage, separation, barriers and emergency procedures remain essential.
How is an HVWS system tested and maintained?
Inspect supply, valves, detection, controls, nozzles and pipes, then verify actuation, pressure, flow and coverage under an approved plan.
Do you provide HVWS systems across India?
Yes. We support enquiries from Mumbai across India, subject to engineering, site and approval requirements.
Related Water-Based Fire Protection
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Call +91 96999 90424 | sales@relifire.com | Contact Reliance Fire Protection Systems