BS5163 Flanged Resilient Seated NRS Gate Valve

BS5163 Flanged Resilient Seated NRS Gate Valve Definition and Components

A BS5163 Flanged NRS resilient seated gate valve Model No.Z45X-02 is a British Standard compliant gate valve specifically designed for waterworks.It conforms to BS5163:2004"Valves for waterworks purposes-Flanged resilient seated gate valves for waterworks purposes."The model number indicates:Z=Gate valve,45=Flanged,X=Resilient seated,02=Design version for BS standard.

Main Parts:

Valve body with BS standard flanges(Type A flat face)

Resilient-seated gate with full rubber encapsulation

Non-rising stem assembly

Handwheel or gear operator

Body-bonnet bolting with full-face gasket

Internal epoxy coating(minimum 250μm per BS EN 14901)

Exterior protective coating

Role, Characteristics, and Application Scenarios of BS5163 Flanged Resilient Seated NRS Gate Valve in Pipelines

Functions:

Mainline isolation in UK water distribution networks

Pump station control and isolation

Reservoir and tank inlet/outlet valves

Water treatment process line valves

Operational Features:

Bubble-tight seal per BS5163 leakage requirements

Corrosion allowance minimum 4.0mm on castings

WRAS approved materials for potable water

Low operating torque with resilient seat

Non-rising stem for compact installation

Fire gate valve Typical Applications:

UK water utility distribution systems

Water treatment works process lines

Fire fighting water mains

Industrial water supply in the UK

Building services water supply

Scenario Diagram:

BS5163 Flanged Resilient Seated NRS Gate Valve Standards: Materials, Design, and Connections

Fire Valve Material Standards:

Body/Bonnet:Ductile Iron to BS EN 1563(EN-GJS-450-10 typical)

Stem:Stainless Steel to BS EN 10088-3(1.4021/1.4057)

Gate:Ductile iron with EPDM encapsulation

Seat Material:EPDM compound to BS EN 681-1

Bolting:Carbon steel,Grade 8.8 zinc plated

Internal Coating:Fusion bonded epoxy to BS EN 14901

Design Standards:

BS5163:2004-Primary governing standard

BS EN 1074-Fitness for purpose requirements for water supply valves

BS EN 12266-1-Pressure testing requirements

WRAS Regulation 31-Approval for materials in contact with drinking water

Connection Standards:

Flanges:BS EN 1092-2 Type A(flat face)

Alternative Flanges:BS4504 PN10/16

Gaskets:Full-face type to BS EN 1514-1

Face-to-Face:Dimensions as per BS5163 tables

Pressure Rating:PN10,PN16 standard(PN25 available)

How to Select Such BS5163 Flanged Resilient Seated NRS Gate Valve

Key Steps:

Specify BS5163 Compliance:This is mandatory for UK waterworks applications

Verify WRAS Approval:All materials must have Water Regulations Advisory Scheme approval

Check UK Water Company Approval:Some utilities have additional approval requirements

Select Supplier:Manufacturer must have proven BS5163 production experience

Request Documentation:BS5163 compliance certificate and WRAS approval certificates

Critical Specifications:

BS5163:2004 compliance confirmation

WRAS approval numbers for all wetted parts

Pressure rating(PN16 most common)

Flange type(BS EN 1092-2 Type A standard)

Internal coating specification(BS EN 14901 compliant)

Important Considerations:

Ensure manufacturer has valid WRAS product approval

Check for additional UK water company approvals(e.g.,WIS 4-52-02)

Verify lead times(typically 10-14 weeks for BS5163 valves)

Consider that BS5163 requires minimum 4.0mm corrosion allowance

Pre-Shipment Inspection for Export BS5163 Flanged Resilient Seated NRS Gate Valve and Key Considerations

Documentation Check:

BS5163:2004 Certificate of Compliance

WRAS Approval Certificates(Regulation 31 compliance)

Material Test Reports to BS EN 10204 3.1

Coating Certificates(BS EN 14901 compliance)

Hydrostatic Test Certificates per BS EN 12266-1

UKCA/CE Marking documentation

Physical Inspection:

BS5163 Specific Verification

Minimum 4.0mm corrosion allowance measurement

Internal epoxy coating thickness(minimum 250μm DFT)

Proper identification marking per BS5163 Clause 9

Non-rising stem function verification

Pressure Testing(per BS EN 12266-1)

Shell test:1.5×PN(24 bar for PN16 valve)

Seat test:1.1×PN(17.6 bar for PN16 valve)

Test duration minimum 60 seconds

Zero visible leakage requirement

WRAS Compliance Checks

All wetted materials WRAS approved

Proper documentation of material compliance

Coating certification for potable water contact

Dimensional&Visual Inspection

Flange dimensions to BS EN 1092-2 Type A

Face-to-face dimensions per BS5163

Complete assembly with all hardware

Surface finish and coating quality

Export Packaging:

Flange protectors:Bolt-on type for flat face flanges

Internal protection:VCI bags in valve cavity

Moisture control:Extra desiccant for sea transport to humid destinations

Document protection:Waterproof pouch for certificates

Wooden crates:Heavy-duty construction for larger valves

WRAS labels:Protected from damage during shipping

Key Precautions:

WRAS certification:Labels and certificates must remain intact and visible

Flat face protection:Prevent any damage to flange sealing surfaces

Documentation:Complete BS5163 and WRAS certificates must accompany shipment

Climate considerations:Extra protection for tropical or marine environments

Regulatory compliance:Ensure all UK-specific markings are preserved

Final Shipping Documents:

Commercial Invoice with Incoterms

Packing List with detailed valve descriptions

Bill of Lading

Certificate of Origin

Technical Compliance File(BS5163 cert,WRAS approval,test reports)

Material Test Reports(BS EN 10204 3.1)

Installation,Operation&Maintenance Manual

BS5163 Flanged Resilient Seated NRS Gate Valve Size Chart