American Style Throat Clamp,American Hose Clamp Stainless Steel,American Stainless Steel Hose Clamp,Hose Clamp With Handle Taizhou HuaChi Stainless Steel Products Co.,Ltd , https://www.tzhuachi.com
**Product Information:**
- **Model No.:** DW335
- **Media:** Water
- **Thread Standard:** ISO228, ISO7/1
- **Trademark:** DW or OEM
- **Packaging:** Polybag, Inner Box, Carton, and Wooden Pallets
- **Size Range:** 1/2′′ - 2′′
- **Origin:** China
- **HS Code:** 8481804090
**Description:**
1. Pressure tested according to ISO5208 standards.
2. Made with a bronze body for durability.
3. Disc options include brass disc with silicon rubber seals or ABS disc with NBR seals.
4. Available in sizes from 3/8'' to 3''.
5. Thread standards include ISO7/1, ISO228, NPT, and DIN2999.
6. Packaging details: Each valve is packed individually in a polybag, then placed in an inner box, and finally shipped in cartons on wooden pallets.
**Technical Specifications:**
| Parameter | Value |
|-----------------------|--------------------|
| Working Pressure | 1.6 MPa |
| Tested Pressure | 2.0 MPa |
| Working Medium | Water, non-corrosive liquids (excluding oil), and saturated steam |
| Operating Temperature | -20°C ≤ T ≤ 150°C |
**Function:**
A check valve is an automatic device that prevents the backflow of media, protects pumps and motors from reversing, and helps discharge media from containers. It can also be used in pipelines where pressure may exceed system limits.
**Classification:**
Check valves are divided into different types based on their structure and installation methods:
1. **Swing Check Valve:** The disc rotates around the seat axis. It has lower flow resistance compared to lift check valves and is suitable for low flow rates and large diameters. However, it should not be used in pulsating flows as its sealing performance is less effective than lift type. Swing check valves come in single-disc, double-disc, and multi-disc versions depending on the valve size.
2. **Lift Check Valve:** The disc moves vertically along the body’s axis. These valves are typically installed in horizontal pipelines. High-pressure, small-diameter models use a ball-shaped disc. Lift check valves have a similar structure to globe valves, which means they have higher flow resistance. They are commonly used in applications where media needs to be prevented from flowing backward.
Check valves are essential in piping systems to ensure unidirectional flow and prevent damage caused by reverse flow.
**FAQ:**
1. **What is your payment term?**
A: We accept a 30% deposit via T/T, with the remaining 70% paid before delivery. We will provide photos of the products and packaging before the final payment.
2. **What is your delivery time?**
A: Delivery usually takes 15–30 days, depending on the order quantity and our inventory.
3. **Can I get free samples?**
A: Yes, we offer free samples. Please provide your address, phone number, postal code, and courier account information. Let us know which samples you need and their specifications.
4. **Can you produce products with my own brand?**
A: Yes, we support OEM services.
**About Our Company:**
Ningbo Doway M&E Co., Ltd., established in 2000 and based in Ningbo, China, specializes in manufacturing brass and bronze valves, fittings, water meter accessories, and pipe components. Our product range includes ball valves, angle valves, gate valves, check valves, bib cocks, marine valves, PPR inserts, radiator valves, camlock couplings, and grooved couplings.
We are involved in various casting processes such as brass forging, investment casting, sand casting, and gravity casting. Our products are widely used in water and plumbing systems and are well-known in Europe, the USA, the Middle East, and other regions due to competitive pricing, high-quality products, and excellent service.
Our company has obtained ISO9001 certification and CE approval for ball valves, and UL approval for bronze ball valves. Based on the principles of "Honesty, Pragmatism, and Innovation," we have a dedicated team committed to providing competitive pricing, quality products, and timely delivery. We also offer strong OEM and ODM capabilities to meet diverse customer needs.
Ningbo Doway M&E Co., Ltd. aims to be a reliable partner in the water and plumbing industry, delivering value to our customers. Feel free to contact us for more details about how we can support your sourcing operations.