Welcome to FlowBiz Export Private Limited, a globally recognized engineering authority for full-bore pipeline containment, high-consequence hydrocarbon transport, and severe-service isolation infrastructure. Operating precision heavy-forging lines, automated casting foundries, and certified API-compliant hydrostatic testing grids in Gandhidham (Kutch) and Ahmedabad, Gujarat, we stand as India's premier manufacturer, supplier, and global B2B exporter of industrial API 6D Gate Valves.
Our high-performance pipeline gate valves are engineered explicitly to provide dependable, bi-directional, bubble-tight isolation of volatile gases, multi-phase liquids, and compressed air systems. Designed to offer a straight-through unobstructed passageway, these assets eliminate internal turbulence and induce minimal pressure loss across the valve disc. From our primary production and export hub in the port city of Gandhidham, we seamlessly support critical processing networks across India's key industrial hubsincluding Ahmedabad, Vapi, Valsad, Surat, Kutch, Ankleshwar, Bharuch, Mumbai, Nashik, Pune, Thane, Aurangabad, Satara, Sangli, Nagpur, Kolhapur, Indore, Dewas, Bhopal, Chennai, Coimbatore, and Salembacked by immediate proximity to major maritime shipping lanes for fast-tracked global project export.
FlowBiz API 6D Gate Valves feature a full-bore linear-motion design. When manually cycled, a precision-machined wedge or parallel slab disc moves perpendicular to the fluid current. In the fully open position, the gate retracts completely into the valve bonnet casing, leaving the pipeline diameter completely uninhibited. This allows cleaning pigs to pass smoothly through the system and maximizes fluid velocity.
| Engineering Parameter | Certified Product Specifications & Compliance Codes |
| Design Standards | Fully compliant with API 6D, API 600, ASME B16.34, and BS 1414 |
| Testing Standards | 100% hydrostatically, pneumatically, and fire-tested to API 6D / API 598 |
| Sealing Security | Certified ASME B16.104 Leakage Class V / VI (Zero-Leakage Bubble-Tight) |
| Sizing Envelope Array | Broad pipeline matrix: 2" to 24" (50 mm to 600 mm) (Larger sizes available) |
| Pressure Class Matrix | Engineered from ASME Class 150 through Class 2500 ultra-high pressure |
| Wetted Process Media | Fully certified containment for Air, Liquid, and Gas systems |
| Body Shell Metallurgy | Heavy-Duty Cast Iron (IS: 210 FG 220), Carbon Steel (WCB / A105), Stainless Steel |
| Stem Design Profile | Outside Screw and Yoke (OS&Y) / Rising Stem with fine-pitch threads |
| End Connection Interface | Precision-Machined Flanged (ASME B16.5) or Butt-Weld Ends (ASME B16.25) |
| External Surface Finish | High-Build, Matte Polished Corrosion-Resistant Surface Coating |
| Operational Drive | Ergonomic Manual Handwheel / High-Ratio Bevel Gearbox |
To ensure premium quality gate valves that withstand extreme industrial conditions, our valve bodies are poured from high-tensile high-quality cast iron or forged carbon steel. The exterior features a specialized polished, corrosion-resistant surface finish that seals the metal against atmospheric oxidation, moisture, and chemical splashing. This protective layer ensures the valve operates smoothly and reduces the likelihood of material buildup, minimizing regular maintenance costs.
The primary mechanical advantage of our API 6D series is its straight-through internal profile. Unlike globe valves that force fluid through an internal baffle, the gate valve allows media to flow through unobstructed or stops the fluid flow. This design eliminates turbulence and fluid friction, keeping pressure drop across the valve exceptionally low. This maximizes pumping efficiency and slashes operating power consumption across the facility.
Our manufacturing lines feature advanced engineering capabilities to scale pressure containment seamlessly from Class 150 through Class 2500 conditions. Equipped with precision-machined standard connectionswhether configured with flanged or butt-weld endsthese assets provide secure and straightforward installation. This ensures seamless structural alignment into brand-new infrastructure layouts or existing process line upgrades.
Equipped with an ergonomic, low-torque manual handwheel or high-leverage gear unit, our valves offer user-friendly manual operation. A manual API 6D Gate Valve is preferred when precise, hands-on flow control is needed, or in applications where automation is not necessary. This simple configuration operates independently of external electrical grids or automated air lines, helping reduce overall system costs, complexity, and instrumentation downtime risk.
FlowBiz high-performance API 6D certified gate valves are specified across primary high-pressure pipelines:
Thermal Power Generation Facilities: Sectional isolation of high-pressure boiler feed water circuits, auxiliary utility water lines, and low-pressure steam headers.
Oil, Gas, & Petrochemical Processing: Mainline isolation gates for non-critical hydrocarbons, terminal distribution manifolds, and bulk tank farm safety lines.
Chemical Processing Utilities: High-pressure delivery lines for chemical solvents, non-corrosive raw fluid inputs, and plant effluent wastewater loops.
Heavy Manufacturing Processing: Managing high-velocity compressed air networks, raw factory intake lines, and high-capacity water management loops.
A: Our manufacturing process focuses on precision and reliability. We utilize advanced machinery and strict quality controls to ensure each gate valve meets API 6D standards. The raw castings are precision-machined on multi-axis CNC complexes to guarantee close tolerances on the internal wedge alignment. Every single valve then undergoes a rigorous inspection regimeincluding high-pressure hydrostatic seat and shell tests conforming to API 6D protocolsbefore receiving its polished corrosion-resistant surface finish and final dispatch clearance.
A: Proper mechanical alignment is essential to safeguard both operational integrity and ease of maintenance:
Clean the pipeline flanges thoroughly to remove dirt, welding slag, and old gasket residue.
Align the valve body cleanly between the corresponding pipe ends, ensuring the face-to-face dimensions match the pipeline spacing without forcing the metal.
Place a high-quality, pressure-rated gasket evenly between the sealing faces.
Insert standard industrial hardware bolts through the holes and tighten the nuts progressively using a torque wrench in an alternating cross-star pattern to distribute clamping forces evenly, achieving a secure, leak-proof mechanical joint.
A: Flanged connections are ideal for pipelines that require periodic teardowns or frequent cleaning access. However, for high-pressure, high-temperature lines carrying volatile gases or hazardous liquids, a butt-weld connection is preferred. Welding the valve body directly into the pipeline matrix creates a permanent, zero-leakage structural bond that eliminates bolts, nuts, and gaskets entirely, removing the risk of fugitive emissions or flange leaks under extreme thermal cycles.
A: To match our technical specifications for handling medium to high pressure, the internal seating surfaces of the wedge and body rings are treated with hard-faced alloy overlay (such as 13% Chromium or Stellite). This metallurgy prevents galling and resists erosion when the valve is opened against a high-pressure differential. Combined with the rising stem Outside Screw and Yoke (OS&Y) design, the moving stem threads remain outside the wetted fluid channel, protecting them from chemical attack and ensuring long-lasting performance.
A: Sourcing can be initiated by contacting our corporate sales division in Gandhidham (Kutch) or our central engineering headquarters in Ahmedabad, Gujarat. As a leading exporter, supplier, and trader in India, we guarantee a product that excels in both performance and longevity. Our technical application staff will guide you through a comprehensive consultationassessing your precise sizing requirements (2" to 24"), specific pressure class rating, wetted process media parameters, and target installation specificationsto deliver a certified product submittal data sheet and an itemized commercial proposal with factory-direct B2B pricing.
Are you optimizing a high-pressure gas distribution pipeline or upgrading a utility water circuit in a power generation plant? Contact our Gandhidham sales and engineering office today to guide your project forward, or ask a specific question regarding your pipeline alignment below.

Price:
Price 7000 INR / Unit
Minimum Order Quantity : 1 Unit
Color : Blue
Material : Aluminum
Usage : Industrial
Surface : Polished
Price 1000.0 INR / Piece
Minimum Order Quantity : 1 Piece
Color : Silvar
Material : Stainless Steel
Usage : Industrial
Surface : Polished
Price 3000.0 INR / Piece
Minimum Order Quantity : 1 Number
Color : Silver
Material : Stainless Steel
Usage : Industrial
Surface : Smooth
Price 5000.0 INR / Number
Minimum Order Quantity : 1 Number
Color : Silvar
Material : Stainless Steel
Usage : Industrial
Surface : Polished