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**Product Specifications:**
- **Model No.:** Check Valves
- **Materials:** Casting
- **Port Size:** DN50 – DN200
- **Pressure:** Low Pressure
- **Media:** Water, Oil, Steam, Gas, etc.
- **Trademark:** U-ideal
- **Transport Package:** Standard Wooden Crates
- **Specification:** ANSI, JIS, GB
- **Origin:** China
- **HS Code:** 84813000
**Get Your Backflow in Check**
When you need a check valve to prevent backflow, U-ideal offers a complete line-up including self-closing disc, horizontal swing, sliding disc, silent check, and Y-pattern valves. Whether you're looking for guidance on selecting the right valve or need catalogs, chemical resistance guides, or submittals, we’re here to help. You can always count on our high-quality products, expert service, and the U-ideal warranty.
**Connection Types:** Soldered, Threaded, Flanged, Wafer, Grooved
**Class Ratings:** 125, 150, 200, 250, 300
**Materials:** Bronze, Ductile Iron, Cast Iron, Bronze Mounted Trim (IBBM), Corrosion-Resistant Options
U-ideal cast ductile and alloy iron check valves are ideal for commercial and industrial use. They are suitable for applications such as hot and cold water, HVAC, steam, oil, gas, limited chemicals, and petroleum refining.
**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. It automatically closes when the flow reverses, preventing backflow. These valves are essential at pump or compressor outlets where reverse flow could cause damage or inefficiency.
**Choosing the Right Check Valve:**
- For low-pressure media with nominal diameter less than DN50mm, consider Butterfly Swing, Vertical Lift, or Diaphragm Check Valves.
- For diameters between 200mm and 1200mm, Butterfly or Diaphragm Check Valves are recommended.
- If minimizing or eliminating water hammer is important, choose a Slow-Close Swing Check Valve or a Low-Close Butterfly Check Valve.
**Check Valve Selection Table:**
| Type | Max. DN | Max. PN | Temperature | 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) | N/A | N/A | N/A | Vertical Pipe | Used at Pump Inlet, Flow from Bottom to Top | N/A | N/A |
| 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 | Suitable for Low-Pressure Large Piping | Poor | Low |
| Diaphragm Check Valve | >2000mm | 1.6 MPa | -20°C to 120°C | Tap Water Pipeline | Helps Reduce Water Hammer | N/A | N/A |
| 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 Media | Good | Low |
Whether you're dealing with water, steam, oil, or more aggressive fluids, U-ideal has the right check valve solution for your application. Contact us today to find out how we can meet your needs.
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