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-PFA/PVDF lined plastic diaphragm valves are suitable for chemical, pharmaceutical, food and industrial processes with corrosive, pure and ultra-pure liquids, gases and vapors.
- Flange end connection: ANSI 150lbs,JIS10k
- Solid thermoplastic for maximum corrosion resistance for the robust body and bonnet area.
- Weir design for excellent throttling capacity.
- Airtight seal, even for processing such as slurry or suspended particles.
- The valve cover is sealed to protect internal fittings from erosion in corrosive environments. One-piece base for simple and robust panel assembly.
- Top indicator indicates valve position.
A diaphragm valve is a control device that uses a soft diaphragm to close or truncate the opening of the inner cavity. The valve position can be moved by increasing or decreasing the pressure on either side of the diaphragm. The valve is commonly used in fields such as food processing, pharmaceutical manufacturing, mining and pollution control. Depending on the application path, diaphragm valves can be made of a variety of plastic and metal materials.
| PFA Perfluoroalkoxy, or PFA, is a fluorine-containing polymer with properties similar to polytetrafluoroethylene (PTFE). It differs from PTFE resin in that it can be fused using conventional injection molding and screw extrusion techniques. PFA Invented by DuPont and named Teflon Q PFA (Teflon@) is marketed under the trade name, while Teflon Q is better known under the PTFE trade name. NeoflonQPFA or PFA from Solvay Solexis. (I had translated some company's name into Chinese,which has Chinese name,others don't, maybe you can use English name directly.) PFA is very similar in composition to the fluoropolymers PTFE and FEP (fluorinated ethylene propylene copolymer). Both PFA and FEP have the effective properties of PTFE such as low friction coefficient and inertia, but they are easier to form. PFA is softer than PTFE and can melt at 305 degrees Celsius. |
PVDF Polyvinylidene fluoride or PVDF is a thermoplastic fluoropolymer with high non-reactivity and purity. PVDF is a special plastic material in the fluoropolymer category. It is widely used in production processes that require extremely high purity, strength and resistance to solvent acids, alkalis and heat, as well as in low smoke processing for flame retardancy. Compared to other fluoropolymers, PVDF is easier to melt because it has a relatively low melting point of about 177 degrees Celsius. It has the advantages of low density (1.78) and low cost compared to other fluoropolymers. Can be used as pipe products, plate, pipe, film, substrate, and prefabricated wire insulating skin material. It can undergo injection molding, molding or welding processes, It is widely used in the chemical, semiconductor, medical and defense industries, as well as in the production of lithium-ion batteries. It can also be used as a cross-linked closed cell foam, which is increasingly used in the field of flying machinery and aerospace. |
| PVC Polyvinyl chloride, often abbreviated to PVC, is a thermoplastic polymer. PVC is also a vinyl polymer, constructed by a repetitive vinyl group (vinyl) in which hydrogen is replaced by a chlorinated substance. PVC is the third most widely produced synthetic plastic polymer after polyethylene and polypropylene. Due to its low cost, durability and ease of assembly, PVC is widely used in manufacturing. By adding phthalates, the most commonly used plasticizer, it can be made more flexible. In this form, it is used in clothing upholstery, cable insulators, inflatable products, and in many applications to replace rubber. PP Polypropylene (PP) is a thermoplastic polymer used in a wide range of applications, including packaging, textiles (such as rope, thermal underwear and carpets), stationery, plastic parts and various types of reusable containers, thermoplastic polymer equipment for laboratory use, loudspeakers, automotive parts and polymer banknotes. PP is an addition polymer made from monomer propylene, which is durable and resistant to many chemical solvents, alkali and acid corrosion. PPS Polyphenylene sulfide (PPS) is an organic polymer composed of sulfur compounds connected with aromatic rings. Synthetic fibers and textiles derived from this polymer are known to have the advantages of high temperature and chemical resistance. PPS is used in the manufacture of coal-fired boilers, paper felt, electronic insulating parts, functional films, washers and fillers. PPS is a conductive polymer precursor in the class of semi-elastic rod-like polymers. PPS itself is an insulator, but can become a semiconductor when oxidized or doped. Polyphenylene sulfide is also a high performance thermoplastic special engineering plastic. [2]PPS can be molded, extruded or machined to a deep brown color. The maximum available temperature is 218 degrees Celsius (424 degrees Fahrenheit). PPS is insoluble in any solvent at temperatures below about 200 degrees Celsius (392 degrees Fahrenheit). PPA Polyphthalamide (PPA, high performance polyamide) is a thermoplastic synthetic resin in the polyamide (nylon) class, which can be used to replace metals in automobiles under high temperature conditions, as shells for high-temperature electronic connection parts and many other purposes. PPA has been found to be suitable for the production of cookware to a certain extent. Cold Steel has announced a glass fiber reinforced series that is invisible (so the series will not be detected by metal detectors, no metal Reflex), and named "Grivory" (trade label), stronger than the previously manufactured model "Zytel". As a member of the nylon system, PPA is a monocrystalline material composed of diacid and diamine. But the diacid portion contains at least 55% Terephthalic acid (TPA) or isophthalic acid (IPA). Compared to standard aliphatic nylon polymer, TPA or IPA is an aromatic component that increases the melting point, glass transition temperature, and chemical resistance. |
| property | lining | Valve body | |||||||
| PFA PVDF U-PVC PP+GF30% PPS+GF40% PPA+GF40% | |||||||||
| Specific gravity | 2.14~2.16 | 1.75~1.78 | 1.3~1.45 | 0.9 | 1.66 | 1.56 | |||
| Fusing point | ºC | 304 | 177 | 170 | 165 | 285 | 312 | ||
| Tensile strength | MPa | 33.3 | 40~52 | 60 | 30~35 | 210 | 260 | ||
| Continuous operating temperature | ºC | 260 | 150 | 60 | 90 | 200 | 185 | ||
| Deflection temperature (1.8Mpa below) | ºC | 48 |
90 |
270 |
287 |
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| In addition to PTFE,FEP and PFA, there are other fluoropolymers, such as THV,ETFE,ECTFE,CTFE And PVDF. Although these materials are all fluoropolymers, they have slightly different thermal and mechanical properties. PTFE and PFA have slightly higher service temperatures than PFE, and PFE and PFA are transparent (PTFE is translucent), as well as have better mechanical properties than PTFE. Other important differences are chemical inertness, corrosion resistance, permeability and PDA (US Food and Drug Administration) certification. |
| Ergonomic hand wheel design High integrity hand wheel with ergonomic design ensures comfortable and precise control |
Hood isolation Working parts are isolated from process fluid media |
| Position indicator Provides intuitive visual indication of valve position |
Advanced bonnet design Support diaphragm for safe and effective sealing |
| Indicator cover Protects the inside of the hood from air conditions |
Floating nut Prevent point load on M-PTFE diaphragm and increase cycle life |
| Plastic body with PFA(PVDF) lining A variety of valve body materials are available Applicable to PPS(GF40%),PPA(GF40%),PP(GF30%), U-PVC Two structural lengths of the valve body ANSI 150lbs,JIS 10K Flange end connection ANSI 150lbs,JIS 10K Applicable to nominal sizes 1/2"~4"(15A~100A) |
Die-closed two-piece design diaphragm M-PTFE diaphragm with PVDF air blocking EPDM buffer rubber. The diaphragm is moulded into a closed state to reduce the required closing force, extend service life, and provide an airtight closure without stretching or deformation. |
| Fluorway Polymer Materials (Shanghai) Co., Ltd., located in Shanghai, China, is an enterprise situated within the national G60 Science and Technology Innovation Park. We specialize in the production and domestic and international sales of high-performance fluoroplastic semi-finished materials and precision processed components. our business principle is: High quality, wonderful service and very competitive price. We always place quality to the highest level and get repeated orders from our client all the time. We have a well-organized quality control system and a professional QC team Depending on strong technical power, advanced equipment and production lines, great reserve of auxiliary equipment and scientific management, all our products are good quality ensured. As we constantly keep improving, customers from all around the world think highly of us because of our unique workmanship, fine quality. We sincerely welcome Emails and calls from home and abroad as well as those who have been supporting and helping us for long.We believe our strength and sincerity will help us become your faithful business partner. We would like to provide you with the convenience of purchasing and visiting. We are looking forward to growing up with all our partners and building up a long-lasting and prospect future. We sincerely welcome customers and friends, new and regular, from all over the world to enter into business cooperation with us. |
Frequently Asked Questions
1. Q: How long does the sample take? Is the sample free?
A: Usually 2-5 working days: For our stock products, it is free of charge, but shipping fee is charged. Samples are made according to your requirements, but the sample fee is refundable for bulk orders.
2.Q: How to confirm the customized products?
A: We can customize different sizes according to your requirements, firstly make samples and provide them to you.
3,Q:What is your minimum order quantity?
A: Usually our minimum order quantity is 1000 meters per piece, but if you need different sizes of products with different specifications, our minimum order quantity can be 100 meters per order, with no less than ten pieces of each style and each specification.
4, Q: How to know the price?
A: Price is the most important concern of every customer. If you want to know the price, you need to know the following details: product specifications, size, thickness, diameter, outside diameter, inside diameter, etc. These are the main factors that determine the price. The more you order, the lower the unit price you will get!
5. Q: What is your packaging?
Packing: The products are packed in cartons, there is one tube in a carton, we can do any other packing according to your requirements.
6. Q: What is your delivery time? Where is the shipping port?
A: Our delivery time is usually one month in peak season, 15 working days in low season, and the shipping port is Shanghai.
7. Q: What are your payment terms?
A: For orders less than 3000 dollars, full payment.
If the order is more than 3000 dollars, 50% prepayment and 50% before shipment.
8.Q: After-sales service?
A: We promise that if there is any quality problem different from the description of mass production, we will take the responsibility of the defective goods.
Q:Could you tell me something about your company
A:Fluorway Polymer Materials (Shanghai) Co., Ltd., located in Shanghai, China, is an enterprise situated within the national G60 Science and Technology Innovation Park. We specialize in the production and domestic and international sales of high-performance fluoroplastic semi-finished materials and precision processed components.Additionally, we provide MSDS reports to ensure the safe use of our products and help buyers mitigate any potential chemical incidents during usage and transportation. With over 20 years of experience in this industry, our company boasts a strong team of technical engineers and sales professionals.
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