FULLY WELDED BALL VALVE
Fully Welded Body, Full Bore or Reduced Bore
Size: 2"-40"
Pressure: Class 150-900Lb
Material: A105, LF2, F304B, F316, F304, F304L, F51
Operation: Manual, Electric, Pneumatic, Hydraulic
Standards Compliance
Design and Manufacture: API6D, BS 5351, API 608
Face to face(end to end): API 6D/ ANSI B16.10/BS4460
Butt welded end: ANSI B16.25
Test and inspection: API 6D, API 598, ISO 5208, BS 6755
1. Bow-out proof stem
For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner pressure of valve, shoulder is fixed at the lower part of the stem. In addition, in order to prevent leakage resulting from burnout of packing set of the stem in a fire, thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve body. Thus an inverse seal seat is formed which will prevent leakage and avoid accident.
2. Anti-fire safe design
When the trunnion ball valve be used normally, its sealed by seat and ball surface, seat retainer sealed by O-ring and body, this is soft sealed and reliable sealing. When the seat and O-ring are burnt, the seat retainer and body will be sealed by expanded graphite. Thus act anti-fire safe purpose.
3. Anti-static device
In order to prevent friction among ball, stem and PTFE that generates static electricity which may light the combustibles and explosives that cause an accident, in this ball valve, static-conduction spring is set between the stem and the ball, the stem and the body. Thus static electricity is conducted to ground and system safety is secured.
4. Free leakage of body Sealed construction
The connective position of valve body and bonnet is double sealed by gasket and O-ring, on this base, such factors as fire, high temperature, shock and uneven opening or closing of the torque all can't induce external leakage.
5. Low torque in operation
The self-lubricated bearings are installed at the friction of stem, resulting in wear resistance, fiexibility of operation and low torque.
6. Double block&bleed(DBB)
When ball is full open or close position, the transmitter substance in center cavity of body can be released by drainage and emptying devices. In addition, the over loaded pressure in the center cavity of valve can be released to low pressure end by self relief seat.
7. Emergency sealing
Compound injection holes are designed and compound injection valves are installed at locations of stem/cap and body support of side valve. When sealing of stem or seat is damaged to induce leakage, the compound can be used to do the second time sealing. A concealed check valve is installed in side of each compound injection valve to prevent compound from out flowing due to the action of transmitter substance. The top of the compound injection valve is the connector for fast connection with compound injection gun.
8. Extension stem
For the underground installed valve, the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve.
9. Automatic body cavity relief
When the body pressure going up un-normally as the unstable factor, the trunnion ball valve downstream seat will be pushed by un-normally pressure, and the release the unnormalpressure automatically, it doesn't damage to the sealing of upstream seat.
10. Various driving types
The top pad of valve designed according to ISO 5211, which is convenient for connection and exchange of various drivers. The common driving types are manual, electrical, pneumatic and pneumatic/hydraulic.
Size: |
2"-24" (DN50~DN600) (Full Bore) |
3"-32" (DN80~DN800)(Reduced Bore) |
Temperature:-104°C~+280°C |
Pressure: ANSI 150lb, 300lb,600lb,900lb,1500lb,2500lb |
Body: A216WCB,A352LCB,LCC,A351CF8,CF8M,CF3,CF3M,A890 4A,A890 5A,A890 6A,Hastelloy A,Hastelloy B,Hastelloy C,20 Alloy |
Disc or Ball:A216 WCB (A105) ENP,A216WCB(A105)Hcr,A182,F304,F316,F304L,F316L,F51 |
Stem:AISI 4140,A182 F6a,F304,F316,F304L,F316L,F51,17-4PH,17-7PH |
Seat:PTFE R.PTFE PEEK NYLON Pa 12 PPL |
Operation: Lever,Gear,Pneumatic & Electric Actuator |
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.
