Forede DN200 Flange End Swing Type Check Valves Pn16

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: H44T
• Material: Ductile Iron
• Connection Form: Flange
• Structure: Swing
• Pressure: Low Pressure
• Function: Stop The Backflow of Water
• Sealing Form: Flab
• Flow Direction: Unidirection
• Standard: GB
• Application: Water Industrial Usage, Fire Fighting
• Body Material: Ductile Iron
• Size: DN200
• Working Pressure: 10 Bar or 16 Bar
• Color: Red or Blue
• Transport Package: Cloth Bag
• Specification: 60*45*48 cm
• Trademark: forede
• Origin: China
• Production Capacity: 50000 PCS /Year

Product Description

Product Description

Forede® Swing Type Check Valves are a highly reliable and durable solution for preventing backflow in pipelines. These valves are made with high-quality materials, including ductile iron for the body and QT450 for the screws. The latches and cover are also made of top-quality materials, including SS304 stainless steel and ductile iron, respectively, and are covered with NBR for added protection.

These valves are designed with ANSI 150LB, GB, and BS standards and can handle a working pressure of 1.6 Mpa. The surface finishing is done with epoxy red or blue, providing added protection against corrosion and ensuring long-lasting durability.

Forede® Swing Type Check Valves are ideal for a wide range of applications and industries, including oil and gas, petrochemical, power generation, and water treatment. They are designed to provide excellent performance under varying operating conditions, making them a reliable choice for your pipeline needs.
 

 

Product Parameters

 

Body Material	Ductile Iron, QT450
Screw Material	SS304 Stainless Steel
Latch Material	SS304 Stainless Steel
Dis Material	Ductile Iron , QT450, Coverd By NBR
Flange End	ANSI 150 LB / GB / BS Standard
Valve Type	Swing
Working Pressure	1.6 Mpa
Surface Finishing	Epoxy Red or Blue

Packaging & Shipping

FAQ

1. Installation Flow Direction Requirement

Q: Does the H44T swing check valve have a required flow direction during installation?
A: Yes, it must be installed with the flow direction that allows the disc to swing open freely. Follow the "flow arrow" on the valve body to ensure proper one-way flow and sealing.

2. NBR Disc Media Compatibility

Q: What fluids should be avoided with the NBR-coated ductile iron disc?
A: NBR (Nitrile Butadiene Rubber) works well with water, oil, and general industrial fluids. Avoid strong acids, alkalis, ketones, or esters-these can degrade NBR and cause leaks.

3. Maintenance Frequency and Key Checks

Q: How often should this valve be maintained, and what parts need attention?
A: Maintain every 3-6 months. Focus on: inspecting the NBR-coated disc for wear/cracks, lubricating SS304 screws/latches, checking flange connections for leaks, and ensuring the disc swings smoothly.

4. Sizing for Piping Systems

Q: How to choose the right valve size (e.g., 2 inch vs. 12 inch)?
A: Match the valve size to your pipe's nominal diameter (DN). For a DN50 pipe, choose H44T-16Q-50 (2 inch); for DN300, choose H44T-16Q-300 (12 inch) to ensure proper flow and fit.

5. SS304 Components in Humid Environments

Q: How to maintain SS304 stainless steel screws and latches in humid areas?
A: SS304 resists rust well, but in humid or coastal regions, clean them regularly and apply a stainless-steel protectant. This prevents corrosion and ensures long-term functionality.

6. Swing Check Valve vs. Lift Check Valve

Q: When is a swing check valve like H44T better than a lift check valve?
A: Swing check valves (like H44T) have lower flow resistance, making them ideal for large-flow applications (e.g., main water lines). Lift check valves are better for throttling but have higher pressure loss.

7. Working Pressure Selection

Q: When should I use 1.0MPa vs. 1.6MPa working pressure?
A: Use 1.0MPa for low-pressure systems and 1.6MPa for higher-pressure applications. Always ensure your system's pressure does not exceed the valve's working pressure.

8. Epoxy Coating Durability Outdoors

Q: How long does the epoxy red/blue coating last in outdoor conditions?
A: In typical outdoor environments, the epoxy coating lasts 5-8 years. Inspect yearly for chipping and touch up with matching epoxy paint if damage occurs.

9. Noise Reduction During Closure

Q: How to reduce noise when the H44T valve closes?
A: Noise is caused by disc impact and water hammer. Install a cushioning device near the valve, use slow-closing techniques, or ensure proper pipe support to minimize vibration.

10. NBR Disc Wear Inspection

Q: How to check if the NBR-coated disc is worn out?
A: Shut down the system, disassemble the valve, and visually inspect the disc. Look for cracks, peeling, or exposed ductile iron. If sealing performance drops (e.g., leaks), replace the disc.

Order Information

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Before ordering, please contact with our sales team to discuss order information.
 

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