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Free Sample Forged Brass Spring Check Valve
**Product Specifications:**
- **Model No.:** DW341
- **Flow Direction:** Unidirectional
- **Standard:** GB
- **Application:** Industrial Water Use, Household Water Use
- **Power Source:** Manual
- **Trademark:** DW or OEM
- **Packaging:** Polybag, Inner Box, Carton, Wooden Pallets
- **Size:** 3/8'' – 4''
- **Origin:** China
- **HS Code:** 8481804090
**Description:**
This vertical check valve is made of forged brass body, with either a brass disc with silicone rubber seals or an ABS disc with NBR seals. It is suitable for non-return flow applications, ideal for use with pumps and water pipelines.
**Key Features:**
1. **Application:** Designed for low-pressure environments with non-aggressive fluids.
2. **Material:** Forged Brass (CW617N, CW614, CW602N, ASTM C37700)
3. **Size Range:** 1/2'' to 4''
4. **Disc Options:** Brass Disc with Silicon Rubber Seals or ABS Disc with NBR Seals
5. **Thread Standards:** ISO7/1, ISO228, NPT, DIN2999
6. **Packaging Details:** Individually packed in polybags, then placed in inner boxes and cartons, shipped on wooden pallets
**Technical Specification:**
| Parameter | Value |
|-------------------|-----------------|
| Working Pressure | 1.6 MPa |
| Tested Pressure | 2.0 MPa |
| Working Medium | Water, Non-Corrosive Liquids (excluding oil), Saturated Steam |
| Working Temperature | -20°C to 150°C |
**Function:**
A check valve is an automatic valve designed to prevent the backflow of media, ensuring that pumps and motors do not run in reverse. It also helps in discharging contents from containers and can be used in pipelines where pressure may rise above system limits.
**Classification:**
Check valves are categorized based on their structure and installation method:
1. **Swing Check Valve:** The disc rotates around the seat axis, offering lower flow resistance than lift check valves. It is suitable for low flow rates and large diameters but not recommended for pulsating flows. These include single-disc, double-disc, and multi-disc types, depending on the valve size to reduce hydraulic shock.
2. **Lift Check Valve:** The disc moves vertically within the body. These are typically installed in horizontal pipelines and are similar in design to globe valves. They are commonly used for high-pressure, small-diameter systems. The disc is guided by a sleeve and opens under the force of the flowing medium. When flow stops, it closes automatically to prevent backflow.
**Conclusion:**
Check valves are essential components in piping systems, preventing media from flowing backward. Also known as one-way valves, reflux valves, or back pressure valves, they play a crucial role in maintaining system integrity and safety.
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