DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve
DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve - Image 2
DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve - Image 3
DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve - Image 4

DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve

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Description

Technical Data Sheet

Outside Screw and Yoke (OS&Y) Gate Valve
(Bronze-Seated, Metal-to-Metal Design)

Product Name: OS&Y Solid Wedge Gate Valve (Bronze Seated)
Standard: BS5163 / PN16
Size: DN400 (16 inches)

1. General Design Features

  • Type: Outside Screw and Yoke (OS&Y), Solid Wedge, Flanged Ends

  • Seat Type: Metal-to-Metal (Bronze Seated)

  • Stem Design: Rising stem (indicates open/close position)

  • Operation: Handwheel Operated (Gearbox is mandatory for this size due to high seating torque of metal seals)

  • Application: High-temperature fluids, Oils, Steam, Abrasive media, or where rubber is not suitable.

2. Applicable Standards

  • Design & Manufacturing: BS5150 / BS5163 (Metal-seated variants often follow BS5150) / EN1171

  • Face-to-Face Dimension: EN558-1 Series 3 (or BS2089)

  • Flange Drilling: BS4504 / EN1092-2 PN16

  • Test & Inspection: EN12266-1 (Rate A or B depending on spec)

3. Technical Parameters

Item Unit Parameter
Nominal Diameter mm DN400 (16″)
Nominal Pressure PN 16
Working Pressure MPa 1.6 MPa (16 bar)
Shell Test Pressure bar 24 bar
Seal Test Pressure (Metal Seat) bar 17.6 bar (Leakage rate allowed per ISO 5208, Rate D or tighter if specified)
Working Temperature ℃ -10°C ~ +200°C (or higher) *
Suitable Medium – Water, Steam, Oils, Gases, High-temp fluids

*Note: Temperature range depends on the specific bronze alloy and gland packing material.

4. Main Component Materials

Component Specified Material Notes / Alternative
Body Ductile Iron (DI) Typically GGG-40 or GGG-50
Wedge / Disc Ductile Iron (DI) Solid wedge design
Seat Ring (Body) Bronze Corrosion-resistant ring pressed or welded into the body.
Seat Ring (Wedge) Bronze Critical Difference: Both seating surfaces are Bronze (Body and Wedge) for metal-to-metal sealing.
Stem Stainless Steel Typically 2Cr13, SS304, or SS420
Stem Nut High-strength Brass / Aluminum Bronze Located in the Yoke
Bonnet Ductile Iron (DI) –
Gland Packing Graphite / PTFE For high-temperature stem sealing
Handwheel Cast Iron / Malleable Iron Must be fitted with a Gearbox for DN400
Coating Epoxy Resin Min thickness > 250 microns, Color Blue RAL5005 (or as specified)

5. Dimensions & Connection Data (DN400 Reference)

*Note: Metal-seated solid wedge valves are often heavier than resilient seated valves. The dimensions below are estimates based on common BS standards. Request certified drawing for exact values. *

Dimension Item Value (mm) Notes
Face-to-Face Length (L) Approx. 600 mm EN558-1 Series 3
Flange Diameter (D) Approx. 565 mm BS4504 PN16
Bolt Circle Diameter (PCD) Approx. 525 mm –
Number of Bolt Holes 20 – 24 –
Bolt Hole Diameter Approx. 30 – 33 mm –
Overall Height (H) (Open) Approx. 1400 – 1850 mm Height when valve is fully open
Weight (approx) Approx. 450 – 550 kg Metal-seated valves are heavier than resilient-seated ones due to solid wedge mass.

6. Critical Notes & Selection Tips

  1. “Bronze Seated” Definition:

    • This data sheet now reflects a true Bronze-to-Bronze seal. The wedge has a Bronze ring/face that mates with the Bronze seat in the body. This is a metal seat, not a resilient seat.

  2. Torque Requirement (Mandatory Gearbox):

    • Unlike soft-seal valves which rely on rubber compression, metal-seated valves require significant mechanical force to close tightly.

    • For a DN400 PN16 metal-seated valve, a gearbox (worm gear) is NOT optional – it is mandatory. Please confirm the gearbox ratio with the supplier.

  3. Leakage Rate:

    • Metal-seated valves cannot achieve “zero leakage” (bubble tight) like rubber-seated valves. They typically conform to ISO 5208 Rate D (0.1x DN mm³/s) or Rate E. Please confirm the acceptable leakage rate for your application.

  4. Application:

    • This bronze-on-bronze configuration is excellent for hot water, steam condensate, and some oil services where EPDM or NBR rubber would fail.

Action Required:
Please confirm with the manufacturer:

  1. Gearbox Ratio & Output Torque (Is it suitable for manual operation under max differential pressure?)

  2. Sealing Leakage Rate (ISO 5208 Rate D or better?)

  3. Flange drilling details (BS4504 PN16) to match your pipeline.

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