Popis
Technical Data Sheet
Outside Screw and Yoke (OS&Y) Gate Valve – Bronze Seated, Gear Operated with Position Indicator
- General Description
- Product: Flanged End, Outside Screw and Yoke (OS&Y), Solid Wedge Gate Valve
- Seat Type: Bronze-to-Bronze Metal Seated (Metal-to-Metal)
- Operace: Bevel Gear Actuator with Handwheel and Mechanical Position Indicator (visual open/close indication)
- Standardní návrh: BS 5150 / BS 5163 (Metal-seated variant)
- Ends: Flanged to BS 4504 / EN 1092-2
- Osobní setkání: BS 2089 or EN 558-1 Series 3 (short pattern)
- Test Standard: BS 6755 / EN 12266-1
- Aplikace
- Suitable for: Water, steam, oil, gas, and other non-aggressive fluids where metal-to-metal sealing is required.
- Temperature Range: -10°C up to +200°C (depending on packing and bronze alloy)
- Pressure Rating: PN10 / PN16 (specify as required)
- Technical Parameters (Typical for DN200 PN16)
|
Parametr
|
Value
|
|
Nominal Diameter
|
DN200 (8″)
|
|
Jmenovitý tlak
|
PN16 (16 bar)
|
|
Shell Test Pressure
|
24 bar
|
|
Seal Test Pressure
|
17.6 bar (allowable leakage per ISO 5208 Rate D)
|
|
Working Pressure (max)
|
16 bar at 120°C
|
|
Operating Temperature
|
-10°C to +200°C
|
|
Flange Drilling
|
BS 4504 / EN 1092-2 PN16
|
|
Face-to-Face Length
|
400 mm (EN 558-1 Series 3)
|
(For other sizes, refer to Section 7.)
- Materials of Construction
|
Component
|
Materiál
|
|
Tělo
|
Cast Iron (EN-GJL-250 / BS 1452 Grade 250)
|
|
Bonnet
|
Cast Iron (EN-GJL-250)
|
|
Wedge (Gate)
|
Cast Iron with Bronze Seat Ring
|
|
Body Seat Ring
|
Bronze (machined and pressed / welded into body)
|
|
Zastavit
|
Stainless Steel (e.g., AISI 410 / 420 / 304)
|
|
Stem Nut
|
High Tensile Brass / Aluminium Bronze
|
|
Gland Packing
|
Graphite / PTFE (high temperature)
|
|
Gasket
|
Compressed Fibre or Graphite (between body and bonnet)
|
|
Bolting / Nuts
|
Carbon Steel / Stainless Steel (as required)
|
|
Handwheel
|
Malleable / Ductile Iron
|
|
Gearbox
|
Worm Gear Type with enclosed housing
|
|
Position Indicator
|
Mechanical flag-type indicator mounted on gearbox
|
- Funkce
- Gear Operation: Smooth and low torque operation even under high pressure; suitable for large valves and frequent use.
- Position Indicator: Clearly shows valve open/closed status; ideal for buried or inaccessible installations.
- Bronze Seated: Superior corrosion resistance and long service life in demanding fluids.
- Rising Stem: Visual confirmation of stem position (OS&Y design).
- In-Line Repairable: Packing can be replaced under pressure when valve fully open.
- Dimensions & Weights (Reference Values – DN200 PN16)
|
Dimension
|
Value (mm)
|
|
Face-to-Face (L)
|
400
|
|
Flange Diameter (D)
|
340
|
|
Bolt Circle Diameter (PCD)
|
295
|
|
Number of Bolt Holes
|
12
|
|
Bolt Hole Diameter
|
22
|
|
Stem Diameter
|
approx. 32
|
|
Overall Height – Open (H)
|
approx. 850
|
|
Handwheel / Gearbox Height
|
approx. 400 (above centreline)
|
|
Weight
|
approx. 120 kg
|
(For exact dimensions, refer to manufacturer’s drawing.)
- Dimensions for Other Common Sizes (PN16) – Reference Only
|
DN
|
L (mm)
|
D (mm)
|
PCD (mm)
|
No. Bolts
|
Bolt Hole Ø
|
H (open) approx.
|
Weight (kg) approx.
|
|
50
|
250
|
165
|
125
|
4
|
19
|
400
|
20
|
|
80
|
280
|
200
|
160
|
8
|
19
|
550
|
35
|
|
100
|
300
|
220
|
180
|
8
|
19
|
620
|
45
|
|
150
|
350
|
285
|
240
|
8
|
23
|
780
|
80
|
|
200
|
400
|
340
|
295
|
12
|
23
|
850
|
120
|
|
250
|
450
|
405
|
355
|
12
|
28
|
1000
|
170
|
|
300
|
500
|
460
|
410
|
12
|
28
|
1150
|
230
|
|
400
|
600
|
580
|
525
|
16
|
31
|
1450
|
400
|
*(Face-to-face per EN 558-1 Series 3; flanges per EN 1092-2 PN16. For PN10 dimensions, consult supplier.)*
- Gear Operator & Position Indicator Details
- Typ: Fully enclosed worm gear unit
- Ratio: Typically 20:1 to 40:1 (depending on size)
- Input Torque: Designed for comfortable manual operation
- Indicator: 0–90° movement flag type; clearly marked “OPEN” / “SHUT” or with local visual disc/flag
- Housing: Coated cast iron or aluminium, weatherproof
- Testování
- Shell Test: 1.5 x PN (24 bar for PN16) for duration per EN 12266-1
- Seat Test: 1.1 x PN (17.6 bar for PN16) with allowable leakage per Rate D (or tighter if specified)
- Optional: High-pressure seat test, low-pressure air test, or zero-leakage resilient seat tests available on request.
- Notes & Selection Tips
- Bronze Seated: Ensure the application does not require zero-leakage bubble tight shut-off; metal seated valves have allowable leakage.
- Cast Iron Limitations: Avoid thermal shock or rapid temperature changes; not suitable for flammable or toxic fluids without specific approval.
- Gearbox: Standard with handwheel; optional chain wheel or electric actuator available.
- Position Indicator: Provided as standard with gear operator; if handwheel only, indicator may be optional.
- Flange Standard: Confirm whether BS 4504 (metric) or BS 10 (inch-based) is required.
- Ordering Information
To ensure correct selection, please specify:
- Size (DN)
- Jmenovitý tlak (PN)
- Flange Standard (e.g., BS 4504 PN16)
- End Use / Medium
- Any special test requirements
This data sheet is a guideline; always refer to the manufacturer’s certified drawings for exact dimensions and ratings.
ZÁRUKA:
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