Popis
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: DIN 3352
Velikost: DN500 (20 inches)
Pressure: PN10
- General Design Features
- Typ: Outside Screw and Yoke (OS&Y), Solid Wedge, Flanged Ends
- Standardní návrh: DIN 3352
- Face-to-Face Standard: DIN 3202 F4
- Seat Type: Metal-to-Metal (Bronze Seated)
- Konstrukce představce: Rising stem (indicates open/close position)
- Operace: Handwheel Operated (Gearbox is mandatory for DN500 metal-seated valves due to high seating torque)
- Aplikace: High-temperature fluids, Oils, Steam, Abrasive media, or where rubber is not suitable.
- Applicable Standards
- Design & Manufacturing: DIN 3352 (Part 1 & applicable parts)
- Face-to-Face Dimension: DIN 3202 F4 (Short pattern)
- Flange Drilling: DIN 2501 / EN 1092-2 PN10
- Test & Inspection: EN 12266-1 (formerly DIN 3230)
- Technical Parameters
|
Item
|
Unit
|
Parametr
|
|
Nominal Diameter
|
mm
|
DN500 (20″)
|
|
Nominal Pressure
|
PN
|
10
|
|
Working Pressure
|
bar
|
10 bar (1.0 MPa)
|
|
Shell Test Pressure
|
bar
|
15 bar (1.5 x PN)
|
|
Seal Test Pressure (Metal Seat)
|
bar
|
11 bar (1.1 x PN)
|
|
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)
|
GGG-40 or GGG-50 (EN-JS 1030/1050)
|
|
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
|
Both seating surfaces are Bronze for metal-to-metal sealing.
|
|
Zastavit
|
Stainless Steel
|
Typically 2Cr13, X20Cr13, or SS304/SS420
|
|
Stem Nut
|
High-strength Brass / Aluminum Bronze
|
Located in the Yoke
|
|
Bonnet
|
Ductile Iron (DI)
|
GGG-40 or GGG-50
|
|
Gland Packing
|
Graphite / PTFE
|
For high-temperature stem sealing
|
|
Handwheel
|
Cast Iron / Malleable Iron
|
Must be fitted with a Gearbox for DN500
|
|
Coating
|
Epoxy Resin (Fusion Bonded)
|
Min thickness > 250 microns, Color Blue RAL5005 (or as specified)
|
- Dimensions & Connection Data (DN500 PN10 Reference)
*Note: Dimensions based on DIN standards. Request certified drawing for exact values. *
|
Dimension Item
|
Value (mm)
|
Notes
|
|
Face-to-Face Length (L)
|
350 mm
|
DIN 3202 F4 (Short pattern)
|
|
Flange Diameter (D)
|
670 mm
|
DIN 2501 / EN 1092-2 PN10
|
|
Bolt Circle Diameter (PCD/K)
|
620 mm
|
DIN 2501 PN10 Standard
|
|
Number of Bolt Holes
|
20
|
Typically 20 holes for DN500 PN10
|
|
Bolt Hole Diameter (d0)
|
26 mm
|
For M24 bolts (approx)
|
|
Overall Height (H) (Open)
|
Approx. 1600 – 2000 mm
|
Height from centerline to top of handwheel (open position). Varies by manufacturer.
|
|
Weight (approx)
|
Approx. 550 – 700 kg
|
Metal-seated valves are heavier. Confirm with supplier.
|
- Critical Notes & Selection Tips
- “Bronze Seated” Definition:
- This data sheet reflects a true Bronze-to-Bronze seal. The wedge has a Bronze ring/face that mates with the Bronze seat in the body.
Torque Requirement (Mandatory Gearbox):
- For a DN500 PN10 metal-seated valve, a gearbox (worm gear) is NOT optional – it is mandatory. The solid wedge and metal-to-metal contact create very high seating and unseating torque. Please confirm the gearbox ratio with the supplier.
Leakage Rate:
- Metal-seated valves cannot achieve “zero leakage” (bubble tight) like resilient-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.
DIN 3352 Structure:
- DIN 3352 is a multi-part standard. Your valve most likely conforms to DIN 3352 Part 4 or Part 5 for cast iron gate valves, or a specific metal-seated variant.
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 (DIN 2501 PN10) to match your pipeline.
ZÁRUKA:
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