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Model NO.: QE
Trademark: U-ideal
Origin: Tianjin, China
HS Code: 8481804090
This exhaust valve is designed for use in clean water pipelines and is ideal for systems where air accumulation can affect performance. It is constructed using high-quality materials to ensure durability and reliability.
**Working Principle:**
When water enters the pipeline, the plug moves to the lower part of the locating bracket, allowing a large volume of air to be discharged. Once all the air has been removed, water fills the valve, causing the float ball to rise and close the plug, stopping the air release. Under normal operation, small amounts of gas may accumulate at the top of the pipe. When this happens, the water level in the valve decreases, lowering the float ball and allowing air to escape through a small hole. In case of power failure or pump shutdown, when the water in the pipe is drained, negative pressure can occur. At this point, the float ball drops along with the water, opening the small hole and allowing a large amount of air to enter through the large hole, protecting the pipeline from damage.
**Note:** This device is not suitable for sewage pipelines.
**Main Specifications:**
1. Medium: Clean Water
2. Temperature: Normal
3. Body Material: Gray Cast Iron HT200
4. Float and Plug: Stainless Steel
5. Sealing Material: Butadiene Acrylonitrile Rubber
6. Body Strength Test Pressure: 1.5 MPa
7. Sealing Test Pressure: 0.05–1.1 MPa
**Dimensions (mm):**
| DN | D | D1 | D2 | L | H | L | Z-Φd |
|----|-----|-----|-----|-----|-----|-----|------|
| 20 | 105 | 75 | 57 | 280 | 190 | 330 | 4-12 |
| 25 | 115 | 85 | 67 | 280 | 190 | 330 | 4-14 |
| 50 | 160 | 125 | 102 | 300 | 190 | 445 | 4-14 |
| 80 | 195 | 160 | 138 | 365 | 210 | 500 | 4-18 |
| 100| 215 | 180 | 158 | 390 | 245 | 560 | 8-18 |
| 150| 280 | 240 | 211 | 460 | 275 | 605 | 8-22 |
**Additional Dimensions (mm):**
| DN | D | D1 | Φ | L | H | Z | Z-Φd |
|----|-----|-----|-----|-----|-----|-----|------|
| 150| 280 | 240 | 350 | 425 | 615 | 8 | 23 |
| 200| 335 | 295 | 400 | 485 | 715 | 8 | 23 |
| 250| 390 | 350 | 465 | 540 | 880 | 12 | 23 |
| 300| 440 | 400 | 400 | 510 | 990 | 12 | 23 |
| 400| 565 | 515 | 515 | 656 | 750 | 1100| 10 |
**Selection Guide:**
Choose an exhaust valve based on the pipe diameter. Refer to the table below for guidance:
| DN Exhaust Valve | 25 | 50 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
|------------------|------|------|------|------|------|------|------|------|------|------|
| Transmission Pipes | 100–250 | 300–450 | 500–700 | 800–1000 | 1200–1500 | 1600–2000 | 2200–2600 | 2800–3400 | 3600–3800 | 4000–4500 |
**Material Components:**
| No | Name | Material |
|----|--------------|--------------------|
| 1 | Body | HT 200 |
| 2 | Bonnet | HT 200 |
| 3 | Float Ball | 304 Stainless Steel|
| 4 | Locating Bracket | Stainless Steel |
| 5 | Lever | H59 Brass |
| 6 | Plug | Stainless Steel |
This exhaust valve is a reliable solution for maintaining system efficiency and preventing damage caused by air pockets or negative pressure. It is easy to install and maintain, making it a preferred choice for various water supply applications.This category includes all canvas tote Bags, such as shoulder bags, women's shoulder bags, shopping bags, gift bags, storage bags and more.
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