Specification:
Design standard: API 6D
Length of structure: API 6D/ASME B16.10.
Flange connecting end: ASME B16.5/ASME B16.47
Fire test: API 607/API 6FA
Inspection and test: API 6D
Pressure and temperature rating: ASME B16.34
Product scope: NPS 1-1/2″~NPS 8″, CL150~CL2500
Main body material: , WCB LCB WCC CF8 CF8M CF3 CF3M, etc.
Valve seat material: PTFE, RPTFE, NYLON, etc.
Drive device: Handle, worm wheel, electric, pneumatic, etc.
Design Features
1. Reliable Seat Seal
The structure design of elastic sealing ring has been adopted for floating ball valves. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Thus, the reliable seal is ensured. When the medium pressure gets higher, the contacting area between seat ring and ball becomes bigger as the sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.
2. Fire Safe Design
With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. Specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal and external leakage of the valve. As required by customers, floating ball valves with fire safe design can meet the requirement of API 607, API 6FA, BS 6755 and JB/T 6899.
3. Reliable Stem Seal
The blow-out proof design has been adopted for the stem to ensure that even if the pressure in the body cavity is risen accidently and the packing flange becomes invalid, the stem may not be blown out by medium. The stem features the design with a backseat, being assembled from underneath. The sealing force against the backseat gets higher as the medium pressure becomes higher. So the reliable seal of the stem can be assured under variable medium pressure.
4. Anti-static Feature
The traditional packing flange design has been improved to be of two piece structure, i. e., being as a packing flange plate and a follower, the latter contacts the flange plate with spherical surface. Thus, the follower remains vertical always, and is lined internally with a PTFE bush to prevent the galling against and friction between the stem, which can also reduce the operation torque of the valve.
Our Advantages:
1. We Are Factory: FYV has 3 production bases and 1 foundry which located in Wenzhou, Shanghai and Lishui city of China. The Factory Size in Square Meters: 110, 000. FYV has over 600 staff members, more than 60 technical engineers, a digital process center and more than 350 sets of various middle and large equipments. The annual sales revenue reaches above $80 million US Dollars.
2. Regional Sales: We provide specialized sales service refers to different kind of region all over the world. Each sales team member is good at the local language and well experienced to the responsible market. For example: Russian, German, Spanish, Japanese, etc.
3. Low MOQ: Our factory owns the casting company by itself. We are always ready for providing the sample and producing some small orders, in order to meet the business well.
4. OEM Accepted: We can make the products with the client's demand standard or the custom requirement.
5. Complete Service: We are always ready to hear from you, be responding to your enquiry immediately. Our trade manager is always online for you.
6. Good Quality: We have strict quality control system and amounts of testing equipments for different kind of valve, such as size, pressure, working environment etc. We are winning the market reputation with the time goes by.
7. Quick Delivery: We have the large stock for some hot products.
| No. | Parts Name | Materials |
| Carbon Steel | Low Tem. Steel | Stainless Steel |
| 1 | Body | ASTM A216-WCB | ASTM A352-LCB/LCC | ASTM A351-CF8/CF8M |
| 2 | Ball | ASTM A105+ENP | ASTM A350-LF2+ENP | ASTM A182-F304/F316 |
| 3 | Gasket | PTFE | PTFE | PTFE |
| 4 | Seat | PTFE/RPTFE/NYLON | PTFE/RPTFE/NYLON | PTFE/RPTFE/NYLON |
| 5 | Nut | ASTM A194-2H/2HM | ASTM A194 4 | ASTM A194-8/8M |
| 6 | Bolt | ASTM A193-B7/B7M | ASTM A320 L7 | ASTM A193-B8/B8M |
| 7 | Bonnet | ASTM A216-WCB | ASTM A352-LCB/LCC | ASTM A351-CF8/CF8M |
| 8 | Spring | ASTM A276-304 | ASTM A276-304 | ASTM A276-304/316 |
| 9 | Steel Ball | ASTM A276-304 | ASTM A276-304 | ASTM A276-304/316 |
| 10 | Stem | ASTM A276-420 | ASTM A182-F304 | ASTM A182-F304/F316 |
| 11 | Thrust washer | 304+PTFE | 304+PTFE | 304+PTFE/316+PTFE |
| 12 | Packing | PTFE/Graphite | PTFE/Graphite | PTFE/Graphite |
| 13 | Screw | ASTM A193-B7/B7M | ASTM A320 L7 | ASTM A193-B8/B8M |
| 14 | Packing gland | ASTM A216-WCB | ASTM A352-LCB/LCC | ASTM A351-CF8/CF8M |
| 15 | Stooper plate | Carbon steel | Carbon steel | Carbon steel |
| 16 | Lever | ASTM A216-WCB | ASTM A216-WCB | ASTM A216-WCB |
| 17 | Back stop | Carbon steel | Carbon steel | Carbon steel |
Fangyuan Valve Group Co. Ltd, seated at Wuxing Industrial Zone, Oubei, Yongjia County, so called as "Pump & Valve Village of China", close to the national scenic spot Nanxijiang River to the east and facing the downtown of Wenzhou City to the south, and established in 1998 with the former as Zhejiang Fangyuan Valve Manufacturing Co. Ltd, has got a great achievement via hard work and continual going forth ahead and become a magnate of plate gate valve from an unknown small enterprise and leads the future of this industry. Fangyuan Valve Group Co. Ltd was derived from Zhejiang Fangyuan Valve Manufacturing Co. Ltd in 2005 and holds 5 stock subsidiaries, three production bases in Wenzhou, Shanghai and Lishui and a cast base in Lishui, a total registered capital up to 4, 000, 000 USD, a total land area 110000m2, over 600 staff members, 60 of which are technicians, a digital process center and more than 350 sets of various middle and large equipments and an annual output up to 12000 tons.
This Group comes as a key enterprise among the said"Pump & Valve Village of China"and a well known enterprise in the national valve industry and specializes in the production of plate gate valve, gas valve, electric station valve etc., with the development, design and invention patent know-how up to the advanced technical level of the world and the leading level of the nation and some of the products used to replace the imported ones. This Group has been accredited to ISO9001, API6A/6D, CE, AZ etc., won the first prize of scientific advance of Zhejiang Province and elected as a member of the first-grade supply network of China Petroleum, a member of China Petrochemical Resource Market, a member of No. 1 Energy Network, a member for supply of the national electric power system, an appointed production enterprise by Chemical Equipment General Corp., a Wenzhou high-tech enterprise, a start enterprise of Yongjia County, one of the 30 powerful enterprises among the said village and a banking credit AAA grade enterprise in the successive recent years. It holds a powerful strength in the technical, management and market etc. Respects and a notable superiority in the severe market competition.
The products, approved by the nation and province early or late, have been elected as quality products of Zhejiang Province and well-known ones of Wenzhou. This Group follows the guide policy of"takeing people as the base, managing the company with laws, prospecting the enterprise with quality, continuing innovations"and makes the products well sold to all over the country and USA, Canada, the Middle East, Europe etc. World markets, greatly favored by the users therein. Therefore a solid basis has been made for the further open-up of the world market, for the making of Fangyuan brand, for the national industrial progression and for the great target to create a valve magnate of China and step forward to the 50 powerful valve companies of the world.
Slab gate valve: Slab gate and expanding gate, double sealed upstream and downstream design, double block and bleed open and closed design. Size: DN50~DN1400, pressure: PN16~PN420, handwheel, gear, electric, pneumatic.
Fully welded ball valve.
Forged steel valve. Material: A105, LF2, F11, F22, F5, F304, F316, F321 etc.
