AWWA C515 Flanged Resilient Seated NRS Gate Valve

AWWA C515 Flanged Resilient Seated NRS Gate Valve Definition and Components

An AWWA C515 Flanged Resilient Seated NRS Gate Valves Model No.1110 is a waterworks valve designed specifically for potable water systems according to the American Water Works Association standard C515.It features flanged connections and a non-rising stem(NRS)design.Model 1110 typically indicates a manufacturer's specific design for this standard.

Main Parts:

Valve body with ANSI flanges

Resilient-seated gate(rubber encapsulated)

Non-rising stem assembly

Handwheel or gear operator

Body-bonnet bolting with gasket

Internal epoxy coating(AWWA C550)

Standard exterior coating

Role, Characteristics, and Application Scenarios of AWWA C515 Flanged Resilient Seated NRS Gate Valve in Pipelines

Functions:

Mainline isolation in water distribution networks

Pump station control valves

Reservoir and tank inlet/outlet valves

Water treatment plant process valves

Fire Valve Operational Features:

Bubble-tight seal per AWWA C515 requirements

Low operating torque with resilient seat design

Compact installation with non-rising stem

NSF/61 certified materials for potable water

Corrosion protected interior and exterior

Typical Applications:

Municipal water distribution systems

Water treatment plant piping

Fire protection water supply

Industrial water supply lines

Irrigation district mainlines

Scenario Diagram:

AWWA C515 Flanged Resilient Seated NRS Gate Valve Standards: Materials, Design, and Connections

Material Standards:

Body/Bonnet: Ductile Iron ASTM A536 Grade 65-45-12

Stem: Stainless Steel AISI 416 or equivalent

Gate: Ductile iron with NSF/61 approved EPDM

Bolting: Carbon steel with corrosion-resistant coating

Internal Coating: Fusion-bonded epoxy per AWWA C550

Fire gate valve Design Standards:

AWWA C515 - "Resilient-Seated Gate Valves for Water Supply Service" (Primary standard)

AWWA C500 - Alternative standard for metal-seated valves

Pressure ratings: 150 psi, 200 psi, 250 psi standard

Design includes minimum 4:1 safety factor

Connection Standards:

Flanges: ANSI B16.1 Class 125 or Class 250

Gaskets: Full-face rubber per ANSI/AWWA C111

Face-to-Face: AWWA standard dimensions

Ends: Flanged x Flanged standard configuration

How to Select AWWA C515 Flanged Resilient Seated NRS Gate Valve

Key Steps:

Verify AWWA C515 Compliance:Mandatory requirement

Check NSF/61 Certification:Required for potable water

Specify Size and Pressure:Standard sizes 3"to 48",150 psi common

Select Supplier:AWWA-approved manufacturers

Review Documentation:Request AWWA compliance certificates

Critical Specifications:

AWWA C515 compliance confirmation

NSF/61 certification for all wetted parts

Pressure rating(150 psi typical)

Flange class(125#or 250#)

Internal epoxy coating specification

Important Considerations:

Ensure manufacturer has current AWWA listing

Verify all materials are NSF/61 approved

Check lead times(typically 8-16 weeks)

Consider local water utility approval requirements

Pre-Shipment Inspection for Export AWWA C515 Flanged Resilient Seated NRS Gate Valve and Key Considerations

Documentation Check:

AWWA C515 Certificate of Compliance

NSF/61 Certification documentation

Material Test Reports(ASTM compliance)

Coating Certificates(AWWA C550 compliance)

Hydrostatic Test Reports

Physical Inspection:

AWWA C515 Specific Checks

Minimum wall thickness verification

Internal epoxy coating thickness(8-12 mils)

Proper identification marking per standard

Non-rising stem function verification

Pressure Testing

Shell test:300 psi(for 150 psi valve)

Seat test:165 psi(for 150 psi valve)

Test duration minimum 2 minutes

Zero leakage requirement

NSF/61 Compliance Verification

All wetted parts NSF/61 certified

Proper documentation of material compliance

Coating certification for potable water

General Inspection

Flange face condition and flatness

Complete assembly with all hardware

Proper painting and coating

Smooth operation through full cycle

Export Packaging:

Flange protectors:Bolt-on type required

Internal protection:VCI bags in valve cavity

Moisture control:Desiccant packs for humid destinations

Wooden crates:For valves DN150 and larger

Document protection:Waterproof pouch for certificates

Lifting points:Clearly marked for safe handling

Key Precautions:

NSF/61 compliance:Must be maintained through shipping

Coating protection:Prevent damage to internal epoxy

Documentation:AWWA certificates must accompany shipment

Climate considerations:Extra protection for tropical destinations

Heavy items:Professional rigging and secure transport

Final Shipping Documents:

Commercial Invoice

Packing List with valve details

Bill of Lading

Certificate of Origin

AWWA C515 Compliance Certificate

NSF/61 Certification Package

Material Test Reports

Installation&Maintenance Manual

AWWA C515 Flanged Resilient Seated NRS Gate Valve Size Chart