Description
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
Type: Non-Rising Stem (NRS) / Inside Screw
Seat Material: Bronze (Seat surface faced with Bronze alloy)
Body Material: Cast Iron / Grey Iron
- 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.
- Design & Compliance Standards
|
Item
|
Standard / Code
|
Description
|
|
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)
|
- Main Technical Parameters
|
Parameter
|
Unit
|
Value
|
|
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)
|
|
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
|
- Main Component Materials
|
Part Name
|
Material
|
Notes / Standard
|
|
Body
|
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
|
|
Stem
|
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
|
- 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
|
- Product Features
- 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.
- 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.
- Full Bore Design: The straight-through flow path minimizes fluid resistance and prevents sediment accumulation.
- 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.
- 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.
- Ordering Information
To ensure the correct valve is supplied, please provide the following specifications when ordering:
- Product Name and Model.
- Nominal Diameter (DN).
- Nominal Pressure (PN).
- Body Material (Cast Iron) and Seat Material (Bronze).
- Media Type and Working Temperature.
- Quantity and any special requirements (e.g., special length, special coating, gearbox).
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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