Flanged Gate Valve
Flanged gate valve for pipeline isolation where a bolted flange connection, defined pressure rating, and application-specific material configuration are required.
The valve is selected according to pipeline size, pressure rating, flange standard, medium, temperature, sealing arrangement, and operating method. For replacement and project procurement, these parameters should be checked together to confirm dimensional and service compatibility.
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Full Bore Flanged Gate ValveUnobstructed Full-Bore Flow: The internal diameter of the valve aligns strictly with the mating pipe Schedule. This design minimizes pressure drops across the line and enables smooth passage for -
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Ductile Iron Flanged Resilient Wedge Gate ValveDesigned in strict accordance with international standards, our ductile iron flanged resilient wedge gate valve delivers bi-directional bubble-tight shutoff, low operating torque, and extended -
![ASME B16.34 Flanged End Gate Valve]()
ASME B16.34 Flanged End Gate ValveThe ASME B16.34 flanged end gate valve is a heavy-duty industrial isolation valve engineered for flanged piping systems requiring reliable shut-off and strict adherence to pressure-temperature
Key Technical Features
Flanged End Connection:
Built to international flange standards (ASME, EN, DIN, JIS) for bolted pipeline installation.
Pipeline Isolation:
Designed for complete shut-off service to protect downstream equipment.
Rising and Non-Rising Stem Options:
OS&Y (Outside Screw and Yoke) rising stem provides visual position indication; non-rising stem fits compact vertical installations.
Application-Specific Materials:
Customizable body, wedge, stem, and seating materials to match specific media, pressure, and temperature demands.
Manual and Actuated Operation:
Flexible drive options, including handwheel, bevel gearbox, electric, or pneumatic actuators.
Maintenance-Friendly Connection:
Bolted flange design simplifies pipeline unbolting, line maintenance, and component replacement.
Technical Specifications
|
Parameter |
Selection / Configuration Options |
Applicable Standards |
|
Product Type |
Flanged Gate Valve |
API 600, API 6D, EN 1984, DIN 3352 |
|
Function |
Pipeline isolation and shut-off service |
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|
Nominal Size |
DN15 - DN1200 / NPS 1/2" - 48" |
ISO 6708, ASME B16.10 |
|
Pressure Rating |
PN10, PN16, PN25, PN40, PN64 / Class 150, 300, 600, 900 |
ASME B16.34, EN 1333 |
|
Flange Standard |
ASME B16.5, ASME B16.47, EN 1092-1, DIN 2501, JIS B2220 |
ASME B16.5, EN 1092-1 |
|
Face-to-Face Standard |
ASME B16.10, EN 558 Series 14/15, DIN 3202 |
ASME B16.10, EN 558 |
|
Body Material |
Cast Iron, Ductile Iron, WCB, CF8, CF8M, Duplex, Alloy Steel |
ASTM A216 WCB, ASTM A351 CF8/CF8M |
|
Gate/Wedge Material |
Ductile Iron + EPDM/NBR, WCB + Stellite, CF8/CF8M |
-- |
|
Stem Design |
OS&Y Rising Stem, Non-Rising Stem (NRS) |
-- |
|
Seat & Sealing |
Resilient Seat (EPDM/NBR), Metal Seat (13Cr, Stellite, SS316) |
-- |
|
Operation |
Handwheel, Bevel Gearbox, Electric Actuator, Pneumatic Actuator |
ISO 5210 (Actuator Flange) |
|
Inspection & Test |
Shell Test, High/Low Pressure Seat Leak Test |
API 598, EN 12266-1, ISO 5208 |
Valve Body: High-integrity pressure boundary housing the fluid passage. Precision-machined flange bolt holes and face profiles guarantee leak-free joint mating.
Gate / Wedge: Moves perpendicular to the flow axis. Available in flexible wedge, solid wedge, or resilient-coated wedge configurations based on sealing requirements.
Stem & Yoke: Precision-thread stem transfers input torque into linear force. Ground surface finishing protects stem packing against wear.
Bonnet Connection: Bolted bonnet design allows easy access to internal trim components for inline maintenance.
Stem Sealing System: Adjustable gland packing arrangement (Graphite/PTFE) prevents stem leakage under dynamic thermal and pressure loads.
Water Supply & Distribution:
Main distribution networks, raw water intake, and utility isolation (BS 5163 / EN 1092-2).
Wastewater Treatment:
Sewage process lines, sludge handling, and effluent treatment systems.
Industrial Process Piping:
Chemical utilities, cooling water loops, and general process plant isolation.
Oil & Gas Systems:
Upstream, midstream, and refinery isolation requiring API 600 / API 6D fire-safe configurations.
Desalination & Marine:
Seawater intake, reverse osmosis systems, and marine ballast piping using Duplex SS or Bronze internals.
Manufacturing & Quality Assurance Evidence
Material Traceability:
Spectrometer chemical analysis and mechanical property testing for body and stem materials, certified to EN 10204 3.1.
01
Precision CNC Machining:
Strict dimensional tolerances on flange bolt patterns, ring joint grooves, and valve face-to-face lengths.
02
In-House Elastomer Control:
Dedicated molding and vulcanization control for resilient-seated gates to guarantee long-term seal resilience.
03
100% Factory Hydrostatic Testing:
Every valve undergoes shell and seat testing strictly to API 598 or EN 12266-1 standards prior to release.
04
Certified Quality Management:
Operations audited and certified under ISO 9001, CE/PED, and relevant international standards.
05
Customization & Engineering Options
Custom face-to-face dimensions to fit non-standard legacy installations
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Material upgrades for severe corrosive media (Hastelloy, Monel, Duplex)
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High-temperature graphite packing and spiral-wound bonnet gaskets
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ISO 5210 top flanges for easy retrofit of electric or pneumatic actuators
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Specialized surface coatings: FBE (Fusion Bonded Epoxy), polyurethane, or offshore epoxy systems
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2D / 3D CAD models (STEP/DWG) available upon request for EPC project integration
6
Pre-Procurement Buyer Checklist
Line Size & Rating:
Are the pipe size and system maximum operating pressure correctly matched?
Flange Compatibility:
Do the flange standard (ASME vs. EN), pressure rating, and facing (RF/FF/RTJ) match the mating pipeline flanges?
Face-to-Face Length:
Does the valve length conform to standard ASME B16.10 or EN 558 dimensions?
Fluid & Temperature:
Are body, seat, and packing materials compatible with the chemical composition and system temperature?
Operating Overhead Space:
Is there sufficient vertical clearance for a Rising Stem (OS&Y) valve, or is a Non-Rising Stem required?
Actuation Requirements:
Is manual handwheel operation sufficient, or is a gear operator/actuator required for operating torque?
Documentation:
Have MTRs (Material Test Reports), pressure test certificates, and third-party inspection requirements been specified?
FAQ
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