DN200 Ductile Iron Swing Type Check Valve PN25

At Solid, we specialize in customized ductile iron valves, backed by over a decade of expertise. Unlike cast iron options, our ductile iron products offer superior tensile strength and impact resistance.Contact us for quotes.

Product Dimensions and Specifications

Standard: BS5153, DIN3202-F6, DIN3201-F1, AWWA C508

Flange drilling is according to BS4504, DIN2501, and ANSI B16.1

Working pressure: 10bar

Size: DN200

Testing pressure:

Shell: 15bar/24bar/37.5bar

Seal: 11bar/17.6bar/27.5bar

Material: Ductile iron GGG40/50 or Cast IronGG25

Disc seat ring: Brass/Bronze/Stainless steel/ EPDM

Body seat ring: Brass/Bronze/Stainless steel

Bolt and Nuts: Carbon Steel with zinc plated or SS304, 316

Coating: Internal and external with fusion bonded epoxy coating min250μm or Liquid Epoxy painting

End Type: Flanged

Sub Category: Ductile iron Check valve

Item Number: M40204

Category: Valve

Execution: Full Bore

Max temperature: +120°C

Key Features & Benefits

• Backflow Prevention: The swing disc design automatically closes to stop reverse flow, protecting your pipelines from contamination and damage – ideal as a non-return valve.

• Durable Materials: Body and bonnet in ductile iron GGG40/50 (ASTM-A-536), with brass/bronze disc seat rings and EPDM gaskets for corrosion resistance.

• Epoxy Coating: Internal and external fusion-bonded epoxy (min 250μm) for enhanced longevity in harsh environments, outperforming standard cast iron alternatives.

• Size and Pressure Versatility: Available in DN50-600 (2"-24"), with pressure grades up to PN25/250 PSI – the DN200 Ductile Iron Swing Type Check Valve PN25 handles up to +120°C temperatures.

• Low Pressure Drop: Full-bore execution minimizes flow resistance, making it superior to ball check valves in high-volume applications.

Where to use our Swing Check Valves?

Our flanged ductile iron swing check valves are widely adopted in various heavy-duty industries:

• Municipal Water Supply & Distribution

• Wastewater & Sewage Treatment Plants

• HVAC and Fire Protection Systems

• Irrigation and Agricultural Pumping Stations

• Industrial Processing (Oils, non-corrosive liquids, etc.)

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Applications and Installation Guide

The DN200 Ductile Iron Swing Type Check Valve PN25 excels in preventing flow reversal in pipelines for waterworks, sewage treatment, oil & gas, and chemical processing. Install horizontally or vertically (with optional spring for vertical lines) to ensure the disc swings freely. For best results, position after pumps to avoid water hammer – a common issue with tilting or lift check valves. Maintenance Tip: Inspect annually for disc wear; clean epoxy surfaces to maintain corrosion resistance.

Why Choose Solid as your Ductile Iron Swing Type Check Valve supplier?

As a leading industrial valve manufacturer in China, we don't just sell valves; we provide complete fluid control solutions.At Solid, we produce and supply a range of high-quality Check Valve products to meet your needs. We correctly understand the changing trends of our competitive environment, understand our mission and responsibilities from a strategic perspective, and provide the most competitive solutions and professional services to our customers.

We offer competitive prices on our Check Valve products without compromising on quality.

The company is committed to the research and development of high-tech, and transforms the research results into products and productivity, and exerts its effectiveness in complete sets of Swing Type Check Valve system equipment, testing equipment, pilot equipment, etc.

We are a Chinese factory specializing in high-quality Check Valve products and professional services.

We have formed a trade marketing pattern that focuses on foreign trade, concurrently operates domestic and foreign trade, combines industry and trade, and diversifies simultaneously. welcome to contact us.

Frequently Asked Questions 

Q: What is the Minimum Order Quantity (MOQ) for this check valve?

A: We support both small trial orders and large-scale project bulk buying. Please contact our sales team with your specific quantity for the best quotation.

Q: Can you provide the technical drawings (PDF/CAD)?

A: Yes! Detailed product dimensions, cross-section drawings, and flow-rate data sheets are available upon request. Click "Inquire Now" to get the technical submittal.

Q: What is the lead time for a bulk order?

A: Typically, it takes 15-30 days depending on the order volume and customization requirements. We keep regular stock for standard sizes like DN50 to DN300.

Ready to Inquire? Get Your DN200 Ductile Iron Swing Type Check Valve PN25 Today!