DIN Resilient Seat Gate Valve NRS China Factory and Reliable Suppliers

DIN Resilient Seat Gate Valve NRS China Factory and Reliable Suppliers

Looking for high-performance DIN 3352 Resilient Seat Gate Valves? As leading China suppliers and factory, we offer NRS valves with EN 1092-2 flanges, DIN 3202 F4F5 dimensions, and fusion bonded epoxy coating. Sizes up to 40 inches, tested per API 598 and EN12266 for leak-proof reliability.



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The DIN Resilient Seat Gate Valve NRS is a high-performance industrial valve engineered for superior sealing and durability in demanding piping systems. Designed in strict accordance with DIN 3352 standards, this valve features a Non-Rising Stem (NRS) configuration, making it an ideal choice for installations with limited spatial overhead where a compact design is essential for operational efficiency.

Equipped with a fusion-bonded epoxy coating on both internal and external surfaces, it offers exceptional corrosion resistance and a smooth flow path. With a wide size range up to 40 inches and rigorous testing per API 598/EN12266, these valves ensure leak-proof performance and long-term reliability across water distribution, wastewater management, and industrial fluid transport applications.

Detailed Parameters

Design StandardDIN 3352Flange DimensionsEN 1092-2 / DIN 2533
Face to FaceDIN 3202 F4/F5CoatingFusion Bonded Epoxy (Internal/External)
Testing StandardAPI 598 / EN12266Max SizeUp to 40"
Body MaterialCast Iron (C.I.) / Ductile Iron (D.I.)Wedge MaterialDuctile Iron + NBR
Stem MaterialStainless Steel 13CrSeal RingsNBR / Viton

Key Advantages

Superior Corrosion Resistance

Full fusion-bonded epoxy coating protects the valve from aggressive environments, extending service life.

Low Maintenance NRS Design

The Non-Rising Stem minimizes operational space and reduces exposure to external contaminants.

Precision Sealing

NBR/Viton O-rings and a resilient seat ensure bubble-tight shut-off even under high pressure.

Standardized Compatibility

Strict adherence to DIN and EN standards ensures seamless integration into existing global piping networks.

Rigorous Quality Testing

Every unit is inspected via API 598 and EN12266 to guarantee zero-leakage performance.

High Material Integrity

Utilizing SS13Cr for stems and high-grade Ductile Iron for the body to withstand mechanical stress.

Product Gallery

DIN Resilient Seat Gate Valve NRS China Factory and Reliable Suppliers

Management Platforms

Inventory Optimization

Streamlined stock tracking for various DIN sizes from DN50 to DN800.

Precision Fabrication

Advanced CNC machining for perfect flange alignment and seat fitting.

Compliance Monitoring

Continuous verification against API 598 and EN12266 standards.

Quality Assurance

Strict material certification for all SS13Cr and Ductile Iron components.

Logistics Management

Secure packaging and global shipping for heavy-duty industrial valves.

After-Sales Support

Comprehensive technical guidance and spare parts availability for O-rings and gaskets.

Investment Return Comparison

FeatureStandard Gate ValveResilient Seat NRS Valve
Sealing PerformanceMetal-to-Metal (Moderate)Resilient Rubber (Bubble-Tight)
Corrosion LifeStandard Coating (Short)Fusion Bonded Epoxy (Long)
Installation SpaceRequires High ClearanceCompact NRS Design
Maintenance FrequencyHigh (Frequent Packing)Low (Optimized Seal)
Long-term ROIBaselineSignificantly Higher (Lower OpEx)

Frequently Asked Questions

Q: What are the main benefits of a Non-Rising Stem (NRS) gate valve?

The NRS design keeps the stem inside the valve body, preventing the stem from extending upwards during operation. This is critical for underground installations or tight spaces where vertical clearance is limited.

Q: Which industry standards does this valve comply with?

It is manufactured according to DIN 3352, with flange dimensions based on EN 1092-2/DIN 2533, and face-to-face dimensions per DIN 3202 F4/F5. Testing is conducted under API 598/EN12266.

Q: How does the fusion-bonded epoxy coating improve valve lifespan?

Fusion-bonded epoxy (FBE) provides a hard, non-porous barrier that prevents water and chemicals from reaching the metal surface, effectively eliminating rust and corrosion on both the interior and exterior.

Q: What materials are used for the sealing components?

We use high-grade NBR or Viton for O-rings and gaskets, and a combination of Ductile Iron and NBR for the wedge, ensuring a resilient seal that adapts to surface irregularities.

Q: What is the maximum size available for the DIN Resilient Seat Gate Valve?

This valve series is available in a wide range of sizes, supporting industrial requirements up to a maximum diameter of 40 inches.

Q: Can this valve be used in high-pressure wastewater systems?

Yes, the combination of a Ductile Iron body and a resilient seat makes it highly suitable for wastewater applications, providing excellent shut-off capabilities and resistance to corrosive effluent.

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