**Pneumatic Actuated Wafer Butterfly Valve** **Model No.:** W-002 **Work Pressure:** Low Pressure (Pn < 1.6MPa) **Working Temperature:** Normal Temperature (-40°C < T < 120°C) **Seal Surface Material:** Soft Sealed **Valve Body:** Cast Iron **Standard:** API 609 **Application:** Industrial, Water Treatment, and Household Use **Size Range:** DN50 – DN300 **Trademark:** TFW **Packaging:** Wooden Case **Certification:** CE **Origin:** Tianjin, China **HS Code:** 84818040 --- ### **Specifications** - **Size:** DN50 – DN300 - **Pressure Rating:** PN10 / PN16, 150 – 300 Lb - **Working Temperature:** -15°C – 180°C - **Suitable Media:** Chemicals, air, water, steam, oil, acids, salts, etc. --- ### **Standards Compliance** | Standard | Details | |---------|---------| | Design | API 609 | | Face to Face | API 609, DIN 3202, ISO 5752 | | Flange Drilling | DIN 2501 PN10/16, ANSI 125/150, JIS 10K | | Top Flange | ISO 5211 | | Test Inspection | API 598 | --- ### **Material Composition** | Component | Material | |----------|----------| | Body | Stainless Steel, Cast Iron, Ductile Iron, WCB | | Disc | Ductile Iron / WCB / Stainless Steel + PTFE | | Stem | Stainless Steel 416, 420, 316 | | Seat | PTFE | | O-ring & Bushing | Viton, PTFE, Bronze | --- ### **Applications** This valve is widely used in HVAC systems, water supply and sewage, food and beverage processing, chemical and petrochemical industries, power and utilities, paper and pulp manufacturing, and more. --- ### **Key Features** 1. Excellent corrosion resistance 2. Easy to operate 3. Long service life --- ### **Why Choose Us?** - **Competitive Pricing:** We offer high-quality products at market-leading prices. - **Factory Direct:** With over 20 years of production experience, our factory is located in Jinnan District, Tianjin, China. - **Certifications:** Our facility is certified with ISO 9001:2000 and CE. - **Customization:** We can customize your logo, color, and design according to your specifications. - **Global Reach:** Products are exported to the US, Canada, Europe, Japan, Australia, and other regions, with annual sales exceeding $10 million. --- ### **Our Services** - On-time delivery guaranteed - Custom branding on the valve body - Color customization available - Production of valves to meet different international standards --- ### **Contact Us for More Information** We are committed to providing reliable solutions and excellent customer service. If you have any questions or need further assistance, feel free to reach out. --- ### **Product Images** [Image 1](http://i.bosscdn.com/uploads/14/7f/50/6307f785bdf13189b303d9e479.jpg) [Image 2](http://i.bosscdn.com/uploads/2d/48/a9/354454c1647e8d80c9f156f726.jpg) [Image 3](http://i.bosscdn.com/uploads/e6/b1/a5/0c2c9c78f629811bcb07f4ab28.jpg) [Image 4](http://i.bosscdn.com/uploads/22/bd/49/47afe205044bbf82946b8b0932.jpg) [Image 5](http://i.bosscdn.com/uploads/4e/df/40/46da6327e79f258910b1dbdc3b.jpg) [Image 6](http://i.bosscdn.com/uploads/e3/49/7d/c4555cf896e97010043d43a8e2.jpg)

100% Biodegradable Polyvinyl Alcohol PVA For Paper Processing

PVA resin is a kind of heavy polymer; it is non-toxic, insipid and harmless. PVA is water-soluble and the solvent
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Product Names
Hydrolysis Viscosity Volatiles (%) Ash (%) (mol %) (cps)
1788 86.0-90.0 20.0-26.0 ≤7.0 ≤ 0.7
2488 86.0-90.0 44.0-52.0 ≤7.0 ≤ 0.7
2688 86.0-90.0 48.0-58.0 ≤7.0 ≤ 0.7
0588 86.0-90.0 4.0-6.0 ≤7.0 ≤0.5

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Ningbo Neon Lion Technology Co., Ltd. , https://www.neonliontech.com