1 gate valve

2 gate valve

3 gate valve

4 gate valve

5 gate valve

šoupátkové ventily

gatevalves

os&y gate

NRS Metal-Seated Gate Valve

NRS Metal-Seated Gate Valve

Nominal Diameter (DN) mm DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600
Nominal Pressure (PN) Bar PN10 / PN16 / PN25
Working Pressure – Max allowable pressure decreases as temperature increases (Refer to Pressure-Temperature rating chart)

Popis

British Standard Metal-Seated Flanged Gate Valve Technical Data Sheet

Product Name: British Standard Non-Rising Stem Flanged Gate Valve
Series/Model: Z45W / BS 5163 Type (Metal Seated)
Connection: Flanged Ends
Typ: Non-Rising Stem (NRS) / Inside Screw
Seat Material: Bronze (Seat surface faced with Bronze alloy)
Materiál těla: Cast Iron / Grey Iron

  1. Application & Media

This valve is designed for isolating or connecting media in pipelines. It is suitable for water, sewage, seawater, oil, and non-corrosive gases. Due to the bronze-to-bronze metal seat, it offers better temperature and wear resistance compared to soft-seal valves, making it ideal for applications requiring metallic sealing surfaces.

  1. Design & Compliance Standards

Item

Standard / Code

Popis

Design & Manufacture

BS 5163 / EN 1074

Specification for gate valves used in water supply systems

Flange Dimensions

BS EN 1092-2

Flanges for cast iron pipes and fittings

Face-to-Face Length

EN 558-1 / BS 5163

Installation dimensions for flanged valves

Pressure Testing

EN 12266-1 / ISO 5208

Valve leakage and pressure test standards

Top Flange

ISO 5210

Standard for actuator mounting (optional)

  1. Main Technical Parameters

Parametr

Unit

Value

Jmenovitý průměr (DN)

mm

DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600

Nominal Pressure (PN)

Bar

PN10 / PN16 / PN25

Working Pressure

–

Max allowable pressure decreases as temperature increases (Refer to Pressure-Temperature rating chart)

Shell Hydrostatic Test

Bar

1.5 x PN (e.g., For PN16: 24 Bar)

Seal Test Pressure

Bar

1.1 x PN (e.g., For PN16: 17.6 Bar)

Working Temperature

℃

-10°C to +120°C (Subject to pressure rating and material limits)

Operation Type

–

Handwheel (Standard), Bevel Gear, Electric Actuator, Pneumatic Actuator

  1. Main Component Materials

Part Name

Materiál

Notes / Standard

Tělo

Cast Iron

Grade: HT250 / EN-GJL-250 (Equivalent to BS 1452)

Bonnet

Cast Iron

Grade: HT250 / EN-GJL-250

Wedge (Gate)

Cast Iron + Bronze Faced

Bronze alloy (e.g., Aluminum Bronze / Tin Bronze) deposited or welded on the seat area

Seat Ring

Bronze / Brass

Integral seat ring deposited on the body or welded bronze ring

Zastavit

Stainless Steel

Grade: 2Cr13 / AISI 304 / AISI 316 (Prevents rust and seizing)

Stem Nut

High-strength Brass

Located inside the wedge for Non-Rising Stem operation

Packing

Graphite / PTFE

Provides reliable stem sealing to prevent external leakage

Handwheel

Ductile Iron / Steel

Epoxy coated

  1. Main Dimensions & Connection Data (PN16)

Note: Dimensions are for reference only. Please verify with the manufacturer’s final drawing before installation.

DN (mm)

Length L (mm)

Flange Dia. D (mm)

Bolt Circle D1 (mm)

No. of Bolts n

Bolt Hole Dia. d (mm)

Total Height H (approx.) (mm)

Handwheel Dia. Do (approx.) (mm)

50

150

165

125

4

19

___

___

65

170

185

145

4

19

___

___

80

180

200

160

8

19

___

___

100

190

220

180

8

19

___

___

125

200

250

210

8

19

___

___

150

210

285

240

8

23

475

280

200

230

340

295

12

23

540

360

250

250

395

350

12

23

630

360

300

270

445

400

12

23

780

400

350

290

505

460

16

23

885

400

400

310

565

515

16

26

990

400

  1. Product Features
  1. Metal-to-Metal Seating: The wedge and seat are faced with a Bronze alloy, ground and lapped to ensure a reliable, wear-resistant seal suitable for higher temperatures and fluids with some impurities.
  2. Non-Rising Stem (NRS): The stem is threaded inside the valve and does not rise when the valve is operated. This design is ideal for spaces with limited vertical clearance or underground installation, as the handwheel height remains constant.
  3. Full Bore Design: The straight-through flow path minimizes fluid resistance and prevents sediment accumulation.
  4. Blow-Out Proof Stem: The stem features a T-head or shoulder at the bottom, preventing it from being ejected by internal pressure, allowing for safe packing replacement under pressure.
  5. Anti-Corrosion Coating: Internal and external surfaces are typically coated with non-toxic epoxy powder to prevent corrosion, making it suitable for potable water systems.
  1. Ordering Information

To ensure the correct valve is supplied, please provide the following specifications when ordering:

  1. Product Name and Model.
  2. Nominal Diameter (DN).
  3. Nominal Pressure (PN).
  4. Body Material (Cast Iron) and Seat Material (Bronze).
  5. Media Type and Working Temperature.
  6. Quantity and any special requirements (e.g., special length, special coating, gearbox).

ZÁRUKA:

Společnost SAVVY VALVES se zavazuje poskytovat výjimečnou kvalitu produktů a bezstarostný poprodejní servis. Naše ventily mají zaručenou minimální životnost 12 měsíců, během níž zdarma dodáme všechny potřebné náhradní díly a podrobné pokyny k údržbě. V případě poškození, které není způsobeno lidskou činností, v rámci záruční doby bezplatně vyměníme komponenty a poskytneme profesionální technickou podporu. Po uplynutí záruky zákazníci uhradí pouze náklady na náhradní díly a zároveň mohou využívat zlevněné služby údržby. Naším cílem je pomáhat klientům snižovat provozní náklady a zvyšovat efektivitu výroby prostřednictvím spolehlivé kvality a komplexní poprodejní podpory. Ať už se jedná o technické dotazy nebo potřeby údržby, náš tým odborníků vám promptně zareaguje, aby zajistil, že váš ventilový systém bude vždy udržovat optimální výkon.

 

Pokud máte zájem o naše produkty, můžete zde zanechat své údaje a my se vám brzy ozveme.