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Resilient Seated Gate Valves for Water and Pipeline Isolation

F4, F5, and BS5163 Configurations for Water Supply, Wastewater, Drainage, and Industrial Pipeline Applications

Elastic Seated Gate Valve
The Elastic Seated Gate Valve features an elastomer-encapsulated wedge to deliver drop-tight isolation in liquid pipelines. Designed as a modern alternative to metal-seated valves, its resilient wedge deforms slightly under closing torque
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Direct Burial Resilient Seated Gate Valve
The Direct Burial Resilient Seated Gate Valve provides zero-leakage fluid isolation for underground pipelines without requiring expensive valve vaults. Featuring an EPDM-encapsulated wedge and a corrosion-resistant non-rising stem, it
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Ductile Iron Resilient Seated Gate Valve
The Ductile Iron Resilient Seated Gate Valve provides drop-tight fluid isolation for drinking water networks, distribution systems, and industrial liquid pipelines. Built with a high-strength ductile iron body and an EPDM/NBR encapsulated
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Resilient Seated Flanged Gate Valve
The Resilient Seated Flanged Gate Valve provides full-bore shut-off for potable water, wastewater, and municipal networks. Its elastomer-encapsulated wedge seals against the precision-cast body, delivering a bubble-tight, zero-leakage
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Resilient Seated Non-Rising Stem Gate Valve
The Resilient Seated Non-Rising Stem Gate Valve delivers bi-directional, zero-leakage fluid isolation for water networks, municipal wastewater, fire protection, and industrial utilities. Engineered with an EPDM/NBR encapsulated wedge and a
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Resilient Seated Rising Stem Gate Valve
Resilient Seated Rising Stem Gate Valves deliver zero-leakage fluid isolation for water supply, sewage treatment, and industrial utility pipelines. Featuring an elastomer-coated wedge and an external OS&Y stem, the valve stem elevates
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Product Overview

Resilient seated gate valves are heavy-duty isolation valves delivering zero-leakage, tight shut-off in municipal and industrial liquid systems. Built with a full-bore flow passage, they feature an elastomer-coated wedge that seals directly against the smooth valve interior. Ideal for water distribution, wastewater, drainage, irrigation, and industrial water pipelines, their non-rising stem (NRS) design makes them excellent for both aboveground piping and underground pipeline installations.

Key Features of Resilient Seated Gate Valves

Resilient Wedge
The elastomer-coated wedge deforms under compression to form a bubble-tight primary seal across compatible fluid media.

Full-Port Flow Passage
When fully open, the gate retracts completely from the flow stream to maximize flow capacity and minimize pressure drop.

Non-Rising Stem
The operating stem rotates internally without extending upward, allowing safe operation in underground chambers and tight spaces.

Ductile Iron Body
Ductile iron construction provides a practical combination of mechanical strength, pressure containment, and durability.

Direct Burial Resilient Seated Gate Valve

EPDM and NBR Options
Available with EPDM for potable water applications or NBR for wastewater and hydrocarbon-tainted services.

F4, F5, and BS5163 Standards
Manufactured to DIN EN 558 F4, F5, and BS 5163 dimensions for straight replacement and new pipeline installations.

Multiple Operating Methods
Can be configured with a handwheel, operating nut, bevel gearbox, or electric actuator depending on required operating torque.

Large Diameter Options
Extended size ranges support major water supply mains, intake stations, and large-scale utility networks.

Technical Specifications

Specification	Available Standard Options
Valve Type	Resilient Seated Gate Valve
Size Range	DN40 - DN1000 (1.5" - 40")
Pressure Rating	PN10 / PN16 / PN25 / Class 150
Stem Design	Non-Rising Stem (NRS)
Face-to-Face	EN 558 F4 (Series 14) / F5 (Series 15) / BS 5163
Flange Standard	EN 1092-2 / BS 4504 / ANSI B16.1
Body / Wedge	Ductile Iron (EN-GJS-500-7) with EPDM / NBR
Stem Material	Stainless Steel SS420 / SS304 / SS316
Coating	Fusion Bonded Epoxy (FBE), Min. 250 microns
Operation	Handwheel / Square Nut / Gearbox / Actuator

Design and Construction

Valve Body

Forms the pressure-retaining structure with a smooth interior that prevents debris accumulation.

Resilient Wedge

Ductile iron core permanently vulcanized with elastomer to ensure continuous zero-leakage sealing.

Stem

Transfers rotational input force into linear movement to displace the wedge cleanly.

Stem Seal

Multi-layer O-rings protect internal threads and stop external contaminant ingress.

Bonnet

Encloses the upper body cavity and secures internal drive components.

How Does a Resilient Seated Gate Valve Work?

Fully Open

Turning the stem lifts the wedge upward, clearing the bottom seating area.

Fully Open

The gate rests fully outside the media path, allowing maximum flow with minimum friction loss.

Rotating the stem in reverse drives the wedge down, compressing the rubber layer against the body for complete shut-off.

Applications of Resilient Seated Gate Valves

Municipal Water Supply
Isolates dedicated sections of water distribution mains during maintenance and repairs.

Water Treatment Plants
Controls raw water lines, process liquid channels, and treated water transport loops.

Wastewater Treatment
Manages municipal sewage and industrial effluent streams where solid particles require smooth passage.

Drainage Networks

Provides reliable section isolation for stormwater and urban drainage infrastructure.

Irrigation Systems

Regulates main flow branches and distribution lines across agricultural networks.

Fire Water Systems

Acts as dependable shut-off valves in fire protection loops requiring unrestricted flow.

Pump Stations

Isolates suction and discharge headers around pump units during servicing.

Industrial Water Systems

Manages secondary cooling water, utility lines, and plant process water loops.

Underground Pipeline Networks

Integrates into buried systems using extension spindles, eliminating large concrete valve vaults.

How to Choose

Valve Size: Match the nominal pipe diameter (DN) of your existing line.

Pressure Rating: Confirm maximum line working pressure (PN10, PN16, or PN25).

Medium Compatibility: Select EPDM for potable water or NBR for media with oil traces/wastewater.

Operating Temperature: Verify maximum line temperature against elastomer limits.

Face-to-Face Standard: Identify whether your layout calls for F4, F5, or BS5163 length.

Flange Drilling: Match bolt hole dimensions to adjoining pipe standards.

Actuation Type: Choose between handwheels, operating nuts, gearboxes, or electric actuators.

Installation Environment: Choose non-rising stems (NRS) for buried or height-restricted spaces.

Testing Requirements: Specify necessary hydrostatic seat tests or material certificates before ordering.

Quality Control and Manufacturing

01/

Technical Specification Review
Specifications, client drawings, and standard requirements are verified before casting release.

02/

Material Verification
Chemical composition and tensile properties of iron and stainless steel batches are tested per standard.

03/

Dimensional Inspection
Flange spacing, bolt circle diameters, and wall thicknesses are verified using calibrated tools.

04/

Pressure Testing
Every unit undergoes hydrostatic shell testing and seat leakage testing per ISO 5208 or EN 12266.

05/

Coating Inspection
Epoxy coating thickness, adhesion, and surface continuity are checked with electronic gauges.

06/

Final Inspection
Finished valves undergo visual, operational, marking, and protective packaging checks before dispatch.

OEM and Customization

Product Customization Options
• Body & Flange Standards: Custom face-to-face dimensions, unique flange drillings, and pressure ratings.
• Material Variants: SS304/SS316 stems, specialized EPDM/NBR rubber, and high-thickness coatings.
• Actuation Extensions: Gearboxes, floor stands, extension spindles, and motorized actuators.

Brand Customization
• Cast Logos: Raised corporate logos or part numbers directly on valve body castings.
• Nameplates: Stainless steel nameplates with custom drawing numbers and tracking data.
• Packaging: Private-label boxes, branded wooden crates, and specialized export packaging.

Technical Project Support
• 2D dimensioned CAD drawings and 3D STEP models.
• Material test reports compliant with EN 10204 3.1.
• Certified pressure test records and inspection documentation.

Resilient Seated Non-Rising Stem Gate Valve

FAQ

Q: What is a resilient seated gate valve?

A: It is an isolation valve using a rubber-coated wedge that compresses against a smooth valve body interior to achieve complete, zero-leakage shut-off.

Q: What is the main difference between resilient seated and metal seated gate valves?

A: Resilient seated valves use a rubber wedge for drop-tight sealing in clean/raw water, while metal seated valves use metal-to-metal contact for higher temperatures or highly abrasive fluids.

Q: What does NRS mean on a gate valve?

A: NRS stands for Non-Rising Stem. The stem rotates internally to move the wedge without extending upward, saving vertical installation space.

Q: What is the difference between F4, F5, and BS5163 gate valves?

A: They represent different face-to-face body lengths: F4 (EN 558 Series 14) is short, F5 (Series 15) is long, and BS5163 follows British standard layout dimensions.

Q: Can resilient seated gate valves handle hot water?

A: Standard EPDM rubber handles water up to 70°C-80°C. Higher temperature applications require specialized high-temp EPDM or fluoroelastomers.

Q: What information is required to get a valve quotation?

A: Provide nominal size (DN), working pressure (PN), face-to-face standard (F4/F5/BS5163), fluid medium, and desired actuation method.

Ready to Source Resilient Seated Gate Valves for Your Project?

Whether you require standard F4, F5, or BS5163 gate valves or fully customized flow control solutions, our technical sales team is ready to support your project requirements.

Technical Consultation

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