LUOYANG DATANG ENERGY TECH CO.,LTD
ANSI Class 300 Flanged Swing Check Valve | SS304 / SS316 Stainless Steel | DN40-DN600 | Dual Plate Check Valve
PRODUCT PARAMETERS
Description
Product Overview
The ANSI Class 300 Flanged Swing Check Valve is a high-performance, automatic backflow prevention device designed for reliable one-way flow control in water, oil, gas, and industrial piping systems. Featuring a stainless steel (SS304 / SS316) body and a swing-type disc mechanism, this valve allows forward flow to open the disc and automatically closes when flow reverses or stops, preventing backflow and protecting pumps, compressors, and other equipment from damage. The flanged ends conform to ANSI Class 300, JIS, and PN standards, ensuring compatibility with international piping systems. Available in sizes from DN40 to DN600 (1.5″ to 24″) with multiple material options — including WCB carbon steel, stainless steel (SS304/SS316), and alloy steel — this valve is suitable for a wide range of industrial applications. With ISO, EAC, WRAS, and CE certifications, it meets global quality and safety standards. The valve is available with manual, worm gear, pneumatic, hydraulic, or electric actuation options.
ANSI Class 300 Flanged Swing Check Valve
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Flanged Swing Check Valve / Dual Plate Check Valve |
| Model | H44H-600LB |
| Body Material | WCB Carbon Steel / SS304 / SS316 / Alloy Steel (Optional) |
| Disc Material | Stainless Steel (SS304 / SS316) |
| Seal Material | EPDM (Optional: PTFE / NBR / VITON) |
| Size Range | DN40 – DN600 (1.5″ to 24″) |
| Pressure Rating | JIS10-20K, ANSI Class 150-900, PN1.0-32.0 MPa |
| Pressure Class | ANSI Class 300 (Standard) |
| Temperature Range | -20°C to +120°C (EPDM seal) |
| Media | Water, Oil, Gas, Mild Chemicals |
| Connection Type | Flanged (RF / FF) |
| Flange Standards | ANSI B16.5, JIS, EN 1092-1, GB/T 9119 |
| Design Standard | API 6D, API 594, BS 1868, GB/T 12236 |
| Operation | Manual / Worm Gear / Pneumatic / Hydraulic / Electric (Optional) |
| Valve Type | Swing Check Valve / Dual Plate Check Valve |
| Certification | ISO, EAC, WRAS, CE |
| Customization | OEM, ODM, OBM |
ANSI Class 300 Flanged Swing Check Valve
Key Features
- Premium Stainless Steel Construction
- Swing Check / Dual Plate Design
- Multiple Pressure Ratings – ANSI / JIS / PN
- Flanged Connection – ANSI B16.5 / JIS / EN
- Wide Material Selection
- Multiple Actuation Options
- OEM / ODM / OBM Customization Support
Applications
- Water Supply Systems
- Fire Protection Systems
- Oil & Gas Pipelines
- HVAC Systems
- Chemical & Petrochemical Processing
ANSI Class 300 Flanged Swing Check Valve
FAQ
Q1: What is the difference between a swing check valve and a dual-plate check valve?
A: Swing check valves feature a single-disc hinged design; they are suitable for medium-to-large bore sizes, offering high flow capacity and low pressure drop, though their closing speed is relatively slow. Dual-plate check valves utilize two spring-assisted discs, resulting in faster response times, shorter installation lengths, and lighter weight; they are ideal for larger sizes and space-constrained applications.
Q2: Which pressure standards does this valve meet?
A: This valve is available in various pressure ratings, including ANSI Class 150–900, JIS 10–20K, and PN 1.0–32.0 MPa. The standard model is ANSI Class 300. Please specify your required pressure rating when placing an order.
Q3: Can the valve body be upgraded to SS316L or alloy steel?
A: Yes. We offer material upgrade options such as SS316L, duplex stainless steel, and alloy steel, suitable for highly corrosive media, high-temperature/high-pressure environments, or special operating conditions. Please specify your requirements when placing an order.
Q4: What is the difference between EPDM and PTFE sealing materials?
A: EPDM (Ethylene Propylene Diene Monomer) is suitable for water and mild chemicals, with a temperature range of -20°C to +120°C and excellent sealing performance. PTFE (Polytetrafluoroethylene) offers superior chemical resistance and a wider temperature range (up to +230°C), making it suitable for corrosive media and high-temperature applications.
Q5: Can third-party inspection reports be provided?
A: Yes. We can provide material testing reports, pressure test reports, and non-destructive testing (NDT) reports issued by third-party inspection agencies. Please specify this requirement when requesting a quote.
ANSI Class 300 Flanged Swing Check Valve
Packing and Shipment
Packing depends on the product type and quantity. Options include bundle packing, wooden crates, or boxes with proper protection for flange faces. Shipment can be arranged by sea, railway, air, or as per customer’s request.
Company Profile
LUOYANG DATANG ENERGY TECH CO., LTD is a professional industrial valve supplier, dedicated to providing reliable flow control solutions for fire protection, HVAC, water treatment, and industrial piping systems worldwide. All products are manufactured to international standards with UL/FM, CE, and ISO 9001 certifications. With over 10 years of experience, a modern facility of 80,000 m², and 200+ professional employees, we serve customers in 10+ countries with quality products, competitive pricing, and reliable delivery.
Payment Terms
T/T, L/C at sight, Western Union & PayPal, etc.
Contact Us
Should you have any inquiries regarding valves and pipe fittings, please do not hesitate to contact us!
Tel / WhatsApp / WeChat: +86 183 3790 0677
Email: sales@pipesandfittings.net
ANSI Class 300 Flanged Swing Check Valve
