The industrial Flanged End Gate Valve provides reliable on/off flow isolation for high-flow liquid and gas lines. Built with bolted bonnets and standard-compliant flange connections, this valve ensures secure pipeline integration and minimal pressure drop when fully open. Engineered for severe service and high-cycle applications across water treatment, municipal utilities, and industrial processing.
Technical Specifications
|
Parameter |
Specification Range |
Compliance Standards |
|
Size Range |
NPS 2" to 48" (DN50 to DN1200) |
ASME B16.10, ISO 5752 |
|
Pressure Rating |
Class 150 - Class 300 / PN10 - PN40 |
ASME B16.5, EN 1092-2, BS 4504 |
|
Body Materials |
Ductile Iron (GGG50), Cast Carbon Steel (WCB), Stainless Steel (CF8, CF8M) |
ASTM A536, ASTM A216, ASTM A351 |
|
Trim Options |
13Cr, Stainless Steel (304/316), Monel, Bronze |
API 600 Trim Tables |
|
Operation Type |
Handwheel, Bevel Gearbox, Electric Actuator, Pneumatic Actuator |
ISO 5210 / ISO 5211 Mounting |
|
Temperature Limit |
-29 C to 425 C (Material dependent) |
ASME B16.34 |
Key Features
Wedge Design: Flexible or solid wedge options accommodate pipeline thermal expansion and minimize seating torque requirements.
Stem Configuration: Available in Rising Stem (OS&Y - Outside Screw and Yoke) for visual position indication, and Non-Rising Stem (NRS) for space-restricted installations.
Backseat Seating: Renewable back-seating design allows repacking under pressure when the valve is fully open.
Guided Wedge: Precision-machined guide ribs on the body and wedge prevent seat galling and reduce operational wear during cycles.
Gasket Seal: Spiral-wound or graphite gaskets with controlled compression deliver a bubble-tight bonnet seal under cyclic pressure loads.
Applications & Project Reference
Water & Wastewater: Municipal distribution networks, desalination plants, and sewage treatment aeration lines.
Oil & Gas: Upstream tank farms, downstream utility lines, and cooling water circuits.
Power Generation: Boiler feed water systems, circulating water loops, and auxiliary steam piping.
Chemical Processing: Plant infrastructure fluid transport handling non-corrosive and moderately aggressive media.
OEM & Customization
Custom Face-to-Face Dimensions: Machined to match legacy plant layouts or specific international piping codes (DIN, ANSI, JIS).
Actuation Integration: Direct mounting pads configured for electric (AUMA, Rotork) or pneumatic actuators without custom brackets.
Special Coatings: Fusion Bonded Epoxy (FBE) coating (minimum 250 microns) applied for underground or corrosive atmospheric installations; specialized high-temperature paints available upon request.
Material Traceability: Customized alloy trims and NACE MR0175 / ISO 15156 compliance for sour service environments.
Testing, Quality & Documentation
Every production batch undergoes strict verification before export:
Shell & Seat Pressure Testing: 100% tested per API 598 or EN 12266-1 (hydrostatic shell test at 1.5x rating; seat test at 1.1x rating).
Non-Destructive Examination (NDE): Radiographic (RT) and Magnetic Particle (MT) inspection available for critical pressure-containing steel castings.
Dimensional Verification: Laser CMM coordinate measuring for flange thickness, face-to-face tolerance, and bore concentricity.
Documentation Package: Supplied with EN 10204 3.1 Material Test Certificates, pressure test reports, and maintenance manuals.
FAQ
Q: What is the difference between resilient-seated and metal-seated gate valves?
A: Resilient-seated valves utilize an elastomer-encapsulated wedge to achieve zero-leakage closure at lower operating torques, primarily for water applications up to 120 C. Metal-seated valves utilize stainless steel or Stellite surfaces designed for high temperatures and abrasive media.
Q: Are your flanged connections compatible with international standards?
A: Yes. Flange drilling and facing comply with ASME B16.5, EN 1092-2 (DIN), and JIS B2220. Raised Face (RF) is standard; Flat Face (FF) or Ring Type Joint (RTJ) are available on request.
Q: What is the standard lead time for bulk project orders?
A: Standard stock sizes (DN50–DN300, PN16/Class 150) ship within 15 to 20 business days. Custom or motorized configurations require 35 to 50 days depending on foundry schedules.
Request a Quote & Engineering Resources
Submit your project parameters (Size, Pressure Rating, Medium, Quantity, and Standards) to receive a commercial and technical proposal within 24 hours.
Hot Tags: flanged end gate valve, China flanged end gate valve manufacturers, suppliers, factory
