The PN16 OS&Y (Outside Screw and Yoke) Gate Valve provides reliable isolation in liquid process lines where immediate, visual open/shut verification is required. The rising stem configuration ensures operating threads remain isolated from the internal fluid stream, protecting against media corrosion and mineral scaling.
Manufacturing & Quality Foundation: Forged and machined in our 45,000 square meter factory equipped with induction melting furnaces, automated horizontal molding lines, and CNC machining centers. Production quality gates include direct-reading spectrometer material verification and mandatory hydrostatic shell/seat testing for every manufactured valve.
Technical Specifications
|
Parameter |
Specification Detail |
|
Size Range |
DN50 to DN600 (NPS 2 to 24 inches) |
|
Pressure Rating |
PN16 (1.6 MPa / 232 PSI) / Class 150 compatible options |
|
Design Standard |
EN 1171, EN 1074-2; top actuator flange per ISO 5210 / ISO 5211 |
|
Face-to-Face |
EN 558 Series 3 (DIN 3202 F4); ASME B16.10 optional for global retrofits |
|
Flange Drilling |
EN 1092-2 PN10 / PN16; ASME B16.42 Class 150 or AWWA C515 drilling available |
|
Working Temperature |
-10°C to 120°C (EPDM seat); -10°C to 80°C (NBR seat) |
|
Operation |
Handwheel, Bevel Gearbox, or Electric Actuator ready |
Material Breakdown
Body & Bonnet: Ductile Iron GGG50 (EN-JS 1050 / ASTM A536 65-45-12)
Wedge: Ductile Iron core, fully encapsulated with food-grade EPDM or NBR
Stem: Rolled Stainless Steel 420 (ASTM A276 420) or SS316
Stem Nut: Aluminum Bronze (CuAl10Fe3) or Brass
Gasket & O-Rings: EPDM / NBR
Fasteners: Carbon Steel Grade 8.8 with Dacromet coating (Stainless steel options available)
Key Features
Visual Position Tracking: The linear movement of the rising stem through the yoke allows field operators to confirm valve status instantly from a distance.
Bubble-Tight Seating: Precision-molded resilient wedge delivers zero-leakage closure meeting EN 12266-1 Rate A standards.
Unrestricted Flow Path: Full-bore interior design eliminates flow turbulence and minimizes head loss across the valve body.
Holiday-Free Coating: Fusion-bonded epoxy (FBE) powder coating applied internally and externally (minimum 250 micrometer thickness), verified using a 2.5kV high-voltage spark test.
Optimized Torque Performance: High-strength bronze stem nut mates smoothly with the rolled stainless steel stem threads, lowering manual operating torque.
Applications
Fire Protection Systems: Water supply headers, main risers, and deluge isolation loops.
Municipal Water Treatment: Potable water intake facilities, filtration skids, and distribution networks.
HVAC Infrastructure: Chilled and condenser water loops in commercial or industrial facilities.
Industrial Plant Utilities: Cooling water, wastewater treatment, and general industrial fluid processing lines.
OEM & Customization
Custom Branding: Cast-in client logos, unique heat codes, and laser-etched stainless steel nameplates per EN 19 / MSS SP-25.
Dimensional Adaptability: Non-standard face-to-face lengths (e.g., DIN 3202 F5 or ASME B16.10) to fit existing pipeline footprints without rework.
Actuation Packages: ISO 5211 mounting pads configured with handwheels, manual bevel gearboxes, or factory-mounted electric multi-turn actuators.
Regulatory Coatings: NSF/ANSI 61, WRAS, and ACS certified epoxy options for regulated potable water projects.
Testing, Quality & Documentation
All production lots undergo strict Factory Acceptance Testing (FAT) protocols prior to packaging:
Hydrostatic Pressure Testing: Performed per EN 12266-1 / ISO 5208 / API 598:
Shell Test: 1.5 x PN (2.4 MPa)
Seat Test: 1.1 x PN (1.76 MPa)
Full Traceability: Heat numbers cast directly onto valve components, cross-referenced with mill test certificates.
Shipment Documentation Packet:
EN 10204 3.1 Material Test Certificate
Hydrostatic Test Report
Dimensional and Visual Inspection Report
Installation, Operation, and Maintenance (IOM) Manual
FAQ
Q: What is the minimum order quantity (MOQ) for standard sizes?
A: Stock sizes (DN50 to DN300) start at 1 pallet. Container consolidation is available for global distribution partners.
Q: Are these valves compliant with North American standards?
A: Yes, we provide drilling and flange variations compatible with ASME B16.42 Class 150 and AWWA C515 structural parameters alongside standard EN dimensions.
Q: Can these valves be mounted vertically?
A: Yes. For sizes DN400 and above in vertical installations, auxiliary stem support brackets are recommended to offset actuator/handwheel weight.
Q: What are your standard delivery lead times?
A: Ex-stock standard sizes ship within 7 to 10 days. Bulk production or custom OEM batches typically require 25 to 35 days.
Request a Quote & Engineering Files
To obtain a formal cost estimate or technical drawings, please provide the following project requirements:
1.Nominal size (DN or NPS) and project quantity
2.Connection standard (EN 1092-2 PN16 or ASME / AWWA specifications)
3.Operation method (Handwheel, Gearbox, or Actuator)
4.Target delivery port
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