DN400 PN16 Cast Iron Metal Seated Rising Stem Gate Valve

• 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.

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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)
Norma: BS5163 / PN16
Velikost: DN400 (16 inches)

General Design Features

Typ: Outside Screw and Yoke (OS&Y), Solid Wedge, Flanged Ends
Seat Type: Metal-to-Metal (Bronze Seated)
Konstrukce představce: Rising stem (indicates open/close position)
Operace: Handwheel Operated (Gearbox is mandatory for this size due to high seating torque of metal seals)
Aplikace: High-temperature fluids, Oils, Steam, Abrasive media, or where rubber is not suitable.

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)

Technical Parameters

Item	Unit	Parametr
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.

Main Component Materials

Component	Specified Material	Notes / Alternative
Tělo	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.
Zastavit	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)

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.

Critical Notes & Selection Tips

“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.

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.

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.

Aplikace:

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:

Gearbox Ratio & Output Torque (Is it suitable for manual operation under max differential pressure?)
Sealing Leakage Rate (ISO 5208 Rate D or better?)
Flange drilling details (BS4504 PN16) to match your pipeline.

ZÁRUKA:

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