Engineered for buried service in municipal water distribution, fire protection, and wastewater networks. Features a ductile iron wedge fully vulcanized with WRAS-approved EPDM or NBR rubber, delivering bubble-tight shut-off (Zero Leakage per ISO 5208 Rate A) even after thousands of cycles. Designed for direct burial without a concrete vault when paired with an operating nut and extension spindle.
Size Range: DN50 to DN600 (2 inches to 24 inches)
Pressure Ratings: PN10, PN16, PN25 (Class 125/150 available)
Operation: Square operating nut, handwheel, or ISO top flange for actuator/gearbox
Standard Compliance: AWWA C515, EN 1074-2, ISO 5208, BS 5163
Technical Specifications
|
Parameter |
Specification Details |
|
Body & Bonnet Material |
Ductile Iron (EN-GJS-500-7 / ASTM A536 65-45-12) |
|
Wedge Material |
Ductile Iron core, fully encapsulated with EPDM/NBR |
|
Stem Material |
Rolled Stainless Steel (AISI 420 / AISI 316) |
|
Stem Nut |
Brass (CuZn39Pb2) or Aluminum Bronze |
|
Bonnet Gasket |
EPDM / NBR |
|
Coating |
Fusion Bonded Epoxy (FBE) interior & exterior, min. 250 um |
|
Flange Drilling |
EN 1092-2 (PN10/PN16/PN25), ASME B16.42 Class 150 |
|
Working Temperature |
-10C to +80C |
Key Features
Zero-Leakage Seating: Autonomous self-cleaning bottom wedge recess prevents debris accumulation, ensuring a tight seal against high differential pressures.
Corrosion Protection: Internal and external fusion-bonded epoxy applied via electrostatic fluidized bed, tested for over 3000-hour salt spray resistance.
Low Operating Torque: Rolled-thread stem reduces mechanical friction between the stem nut and wedge, allowing smooth manual operation without binding.
Maintenance-Free Stem Sealing: Four independent O-rings housed in a corrosion-resistant bronze/brass bushing prevent external moisture ingress in buried environments.
Applications
Municipal Water Supply: Main distribution pipelines and raw water intake lines.
Fire Protection Systems: Underground fire hydrant supply loops and ring mains.
Wastewater & Sewage: Effluent transport and municipal drainage lines (with NBR trim).
Industrial Fluid Transport: Plant cooling water circuits and heavy-duty irrigation networks.
Manufacturing & Customization
Production utilizes automated molding lines, CNC vertical machining centers, and automated electrostatic powder coating booths to maintain dimensional stability across bulk orders.
Custom Stem Lengths: Telescopic extension stems for deep burial installations (depths from 1.0m to 3.5m).
End Connections: Customized drilling patterns matching ANSI, BS, and ISO pipeline standards.
Actuation Options: Direct burial cap, ISO top flange for gearboxes, or pre-mounted electric actuators.
Testing, Quality & Documentation
Valves undergo factory testing prior to shipment in compliance with ISO 5208 and EN 12266-1:
Shell Test: 1.5 x rated working pressure (hydrostatic).
Seat Test: 1.1 x rated working pressure for zero leakage verification.
Coating Thickness Test: Magnetic gauge verification ensuring FBE layer >= 250 um.
Traceability: Heat codes cast onto body and bonnet for raw material tracking.
Documentation Supplied: EN 10204 3.1 Material Certificates, Pressure Test Reports, and Coating Inspection Reports.
FAQ
Q: Is this valve suitable for direct burial without a concrete vault?
A: Yes. When paired with an operating nut and an extension stem, it can be buried directly in soil backfill, provided a surface valve box is used for access.
Q: What is the lifespan of the FBE coating underground?
A: The fusion-bonded epoxy coating complies with DIN 30677-2 standards, formulated to resist aggressive soil chemistry and prevent substrate corrosion.
Q: Can the stem O-rings be replaced under pressure?
A: No. Pipeline pressure must be fully isolated and drained before servicing internal stem seals.
Q: What documents are included with each shipment?
A: EN 10204 3.1 certificates, factory hydro-test reports, and technical installation manuals.
Request a Quote
To obtain a formal quotation for your project, please include the following technical requirements in your inquiry:
1.Nominal Size (DN / Inches) and Pressure Rating (PN / Class)
2.Connection Standard (Flanged EN 1092-2, ASME, or Mechanical Joint)
3.Quantity, Required Delivery Schedule, and Destination Port
[Send Inquiry / Request Technical Datasheet]
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