**Product Specifications:**
- **Model No.:** Check Valves
- **Materials:** Cast Iron
- **Port Size:** DN50 – DN200
- **Pressure Rating:** Low Pressure
- **Media Handled:** Water, Oil, Steam, Gas, and More
- **Brand:** U-ideal
- **Packaging:** Standard Wooden Crates
- **Standards:** ANSI, JIS, GB
- **Origin:** China
- **HS Code:** 84813000
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**Ensure Proper Flow with U-ideal Check Valves**
When it comes to preventing backflow, U-ideal offers a complete range of check valves designed for reliability and performance. Our product line includes self-closing disc, horizontal swing, sliding disc, silent check, and Y-pattern valves. Whether you're looking for technical specifications, catalogs, or chemical resistance guides, our team is here to help. We guarantee top-quality products, expert support, and the U-ideal warranty.
**Connection Types:** Soldered, Threaded, Flanged, Wafer, Grooved
**Pressure Classes:** 125, 150, 200, 250, 300
**Materials:** Bronze, Ductile Iron, Cast Iron, Corrosion-Resistant Options
**Applications:** Commercial and industrial use including hot/cold water, HVAC, steam, oil, gas, limited chemicals, and petroleum systems.
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**What Is a Check Valve?**
A check valve, also known as a non-return valve, is a mechanical device that allows fluid to flow in only one direction, preventing backflow. These valves are essential in systems where reverse flow could cause damage or inefficiency, such as at the outlet of pumps or compressors.
**Selection Guide:**
- For low-pressure media with nominal diameter less than DN50mm, consider Butterfly Swing, Vertical Lift, or Diaphragm Check Valves.
- For diameters between DN200mm and DN1200mm, Butterfly or Diaphragm Check Valves are recommended.
- If minimizing or eliminating water hammer is a priority, choose a Slow-Close Swing Check or Low-Close Butterfly Check Valve.
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**Check Valve Type Comparison Table:**
| Type | Max. DN | Max. PN | Temperature Range | Installation | Features & Application | Sealing | Resistance |
|------|---------|---------|-------------------|--------------|------------------------|---------|------------|
| Vertical Lift Check Valve | 50 | 6.4 MPa | -29°C to 550°C | Horizontal Pipe | Water, Steam, Oil | Good | High |
| Horizontal Lift Check Valve | 50 | 6.4 MPa | -29°C to 551°C | Horizontal / Vertical Pipe | Water, Steam, Oil | Good | High |
| Foot Valve (Bottom Valve) | - | - | - | Vertical Pipe | Installed at Pump Inlet, Fluid flows from bottom to top | - | - |
| Swing Check Valve | >2000mm | 42 MPa | -196°C to 800°C | Any Direction | Water, Steam, Air, Corrosive Fluids, Oil | Poor | Low |
| Butterfly Swing Check Valve | >2000mm | 6.4 MPa | -196°C to 540°C | Any Direction | Low-pressure large piping, suitable for low-speed flow | Poor | Low |
| Diaphragm Check Valve | >2000mm | 1.6 MPa | -20°C to 120°C | Tap Water Pipeline | Helps reduce water hammer | - | - |
| Ball Check Valve | 200–1200mm | 42 MPa | -196°C to 540°C | Horizontal / Vertical Pipe | Suitable for water, steam, oil, nitric acid, urea, and strong oxidizing agents | Good | Low |
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Whether you're dealing with high-temperature fluids, corrosive substances, or sensitive piping systems, U-ideal check valves are engineered to meet your needs. Contact us today to find the right solution for your application.
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