Welcome to the engineering authority for severe-service fire isolation, automatic cavity pressure management, and high-pressure process containment. Operating advanced multi-axis CNC machining complexes, precision spherical-lapping cells, and API-certified fire-safe test cells, FlowBiz Export Private Limited specializes in manufacturing premium-grade Fire-Safe Flanged Ball Valves.
For process applications where flammable media, extreme thermal cycling, or accidental overpressurization can threaten plant infrastructure, our fire-safe ball valves provide reliable safety performance. Designed with a built-in cavity pressure relief arrangement directly in the ball, these valves eliminate dangerous localized pressure spikes that could otherwise damage internal components or lock the valve mechanism. Under regular operating conditions, the polished floating sphere seals tightly against two resilient polymer seats, ensuring bubble-tight, zero-leakage isolation across your piping network.
Every FlowBiz production batch undergoes 100% rigorous high-pressure hydrostatic shell testing, pneumatic seat sealing audits, and certified fire-safe testing to verify performance under international standard mandates.
| Engineering Parameter | Certified Product Specifications & Compliance Codes |
| Design Standards | Fully compliant with ASME B16.34, API 6D, API 608, and ISO 17292 |
| Fire-Safe Validation | Certified and tested in strict accordance with API 607 parameters |
| End Connection Style | Heavy-duty Flanged End design for secure, high-pressure mechanical joints |
| Flange Drill Matching | Precision-machined to conform with ASME B16.5 Class 150 / Class 300 |
| Testing & Inspection | Verified under API 598 and FCI-70-2 zero-leakage testing protocols |
| Thermal Operating Window | Engineered to maintain structural integrity from -40F up to 392F |
| Structural Shell MOC | High-Grade Stainless Steel (SS304 / SS316 / SS316L / CF8M / CF3M) |
| Safety Features | API 607 Dual Sealing Matrix and Cavity Pressure Relief design |
The main safety advantage of the FlowBiz fire-safe flanged ball valve is its two-stage sealing matrix, engineered to maintain isolation even if the primary soft seats are completely destroyed by fire:
STAGE 1: NORMAL WORKING CONDITION STAGE 2: POST-FIRE EXPOSURE PROFILE
(Primary Soft Seat Bubble-Tight Seal) (Secondary Metal-to-Metal Backup Seal)
[ COMPRESSED POLYMER SEAT ] [ LIQUEFIED / BURNT SOFT SEAT ]
|| ||
\/ \/
+-------++-------+ +-------++-------+
| ____ || | | ____ || |
============>| / \ || Free |============> ============>| / \ || Free |============>
Line Pressure| | (O) || Floating| Zero Leakage Line Pressure| | (O) || Floating| Secondary
Flow Stream | \____/ || Ball | Flow Stream | \____/ || Ball | Metal Seat Hold
|_________||_______| |_________||_______| (Bubble-Tight)
^ ^
|| ||
[ PRIMARY PTFE RESILIENT WALL ] [ DISC WEDGES INTO MECHANICAL BEVEL ]
Under normal operating conditions, the highly polished stainless steel ball rests securely against two high-purity polymer seats (PTFE/RPTFE). The pre-compressed assembly provides smooth quarter-turn operation and constant contact with the ball, creating a bubble-tight inline seal that prevents trace fluid weeping.
If a fire breaks out and ambient temperatures rise past the thermal limits of the polymer seats, the soft primary rings will partially char or burn away completely. As the soft seats degrade, the incoming upstream pipeline pressure pushes the floating ball slightly forward into a secondary, precision-machined metal backup seat built into the valve body casting. This metal-to-metal contact blocks the fluid path, preventing flammable gas or liquid from feeding the fire.
When volatile fluids are trapped inside the center cavity of a closed ball valve, external heat or fire exposure can cause the trapped fluid to expand rapidly. If this pressure isn't relieved, it can damage the valve body or stall an automated actuator. The FlowBiz design includes an automatic cavity relief mechanism. When cavity pressure exceeds downstream line pressure by a set margin, the seats deform slightly or a relief vent activates, releasing the excess pressure back into the pipeline to keep the valve safe.
Premium Stainless Steel Construction: Forged and cast from high-grade stainless steel alloys, our valves offer exceptional resistance to chemical corrosion, scaling, and environmental weathering, while maintaining a smooth, easy-to-clean exterior finish.
Leak-Proof Flanged Connections: The rugged flanged end rings simplify installation, maintain a tight seal under intense pipe tension, and allow for easy disassembly during routine maintenance or inspection.
Versatile Media Compatibility: Designed to provide dependable, long-term flow control across pipelines carrying water, air, volatile liquids, or industrial gases.
Wide Thermal Tolerance Window: Retains exceptional mechanical strength and tight sealing capabilities across a broad operating envelope from -40F to 392F, handling freezing gases and high-heat process loops reliably.
Our Fire-Safe Flanged Ball Valves provide critical thermal and fluid containment across multiple processing infrastructures:
Chemical Processing Complexes: Controlling the distribution of volatile organic solvents, organic acids, and reactive intermediate compounds.
Water & Wastewater Treatment Plants: Managing high-velocity filtration headers, dosing pump pipelines, and utility distribution grids.
Petrochemical & Refinery Manifolds: Isolating highly flammable hydrocarbon fractions, blending loops, and storage tank pipelines.
HVAC & Industrial Utility Networks: Regulating central chiller lines, high-pressure plant air manifolds, and steam utility loops.
As a premier manufacturer and exporter of industrial flow control components, FlowBiz Export Private Limited manages an efficient supply chain and large inventory reserves to support critical operations across India and global markets:
Saurashtra & Gujarat Hubs: Surendranagar, Rajkot, Ahmedabad, Vapi, Valsad, Surat, Gandhidham, Kutch, Ankleshwar, and Bharuch.
Maharashtra Industrial Corridors: Mumbai, Nashik, Pune, Thane, Aurangabad, Satara, Sangli, Nagpur, and Kolhapur.
Central & Southern Manufacturing Zones: Indore, Dewas, Bhopal, Chennai, Coimbatore, Salem, and all other major regional industrial centers.
A: Our valves are constructed from high-grade stainless steel alloys that offer outstanding mechanical strength and chemical resistance. This durability allows them to handle corrosive chemical solutions and high pressure loads in heavy industrial plants, while their clean finish and low maintenance needs make them equally well-suited for commercial water lines and building utility networks.
A: Selecting the proper valve involves assessing the chemical nature of your process media, its peak pressure profile, and its operating temperature range. Our flanged ball valves are engineered to work reliably from -40F up to 392F, utilizing high-integrity casting materials and specialized internal trims that resist thermal expansion and binding.
A: They are typically installed as main isolation shut-off valves within fluid headers in chemical processing plants, water treatment skids, oil refining pipelines, and commercial building HVAC grids. Their fire-safe certification makes them the standard choice for lines routing flammable gases, volatile fuels, or high-purity chemicals.
A: We recommend performing regular visual checks and manual cycling every six months to a year, depending on the severity of your process conditions. If you notice fluid weeping at the packing box or downstream leakage during a line shutdown, the internal seals should be serviced or replaced to keep the system operating safely.
A: Sourcing from our Surendranagar manufacturing complex gives your enterprise access to precision-engineered valves built to strict global API and ASME design standards. We offer competitive factory pricing, prompt technical support, and flexible, custom solutions tailored to your project timeline.
A: The flanged end configuration provides a robust, leak-proof mechanical joint that can handle heavy pipeline stress, pressure surges, and structural vibration well. It allows the valve to bolt securely onto standard piping systems, making installation straightforward and simplifying removal when the valve needs routine maintenance or inspections.
Are you updating a chemical processing skid in Surendranagar that requires an API 607 fire-safe flanged ball valve with an integrated ISO mounting pad, or configuring a refinery manifold that demands robust stainless steel temperature control? Contact our technical sales and engineering division today to secure a factory-direct quote and quick pricing, or ask a single relevant question regarding your specific fluid velocity or cavity configuration below to guide the conversation forward.

Price:
Price 9700 INR / Number
Minimum Order Quantity : 1 Unit
Media : Other, Water, Oil, Gas, Air, Steam
Finish : Polished
Material : Other, Stainless Steel/Carbon Steel
Pressure : Other, PN16, PN25, Class 150
Price 6000 INR / Unit
Minimum Order Quantity : 1 Number
Media : Other, Water, Gas, Oil, Acidic Fluids
Finish : Epoxy Painted / Powder Coated
Material : Other, Stainless Steel / Carbon Steel / Cast Iron
Pressure : Other, PN16 / 150 PSI
Price 500.0 INR / Number
Minimum Order Quantity : 1 Number
Media : Other, Water, Oil, Gas, Air
Finish : Polished / Painted / Coated
Material : Other, Stainless Steel / Brass / Cast Iron / PVC
Pressure : Other, PN16 / PN25 / PN40 / 150# / 300#
Price 1400.0 INR / Piece
Minimum Order Quantity : 1 Piece
Media : Other, Water, Oil, Gas
Finish : Polished
Material : Stainless Steel
Pressure : Other, 150 PSI / 300 PSI