Technical Specifications of Product
Class: Class 150-1500 PN: I. 6-10.0MPa
Nominal Diameter: DN15-900
Design and Manufacture: API608, API 6D GB/T12237
Connection Type: 1. Flanged welded connection: ASME B16.5 ASME B16.47, GB/T9113-9131, JB/T79
2. Butt welded connection: GB/T12224 ASME B16.34
Pressure Test: API598 JB/T9092
Actuator Mode: Manual, Worm gear drive, Pneumatic, Electric
Introduction
The metal hard sealing abrasion-resistance ball valve, a distinctive product researched and developed by our company, is applicable for tough working conditions like high impurity, viscosity, temperature and pressure as well as strong corrosion. It adopts reasonable, applicable and high-quality materials, brand-new design concept, advanced production and processing procedures, and whole-process quality control to make every valve satisfied by customers. It has been widely applied In such industries as petrochemical(PE, PP, He-catalytic cracking, cracking, ethylene, synthetic resin, silicon powder, etc. ); Water drainage of main steam pipeline in power plant; Coal powder, deslagging and desulfuration of steel mill; High-pressure melting and slurry filtering system in alumina plant; And coking coal to oil transfer.
Design Concept
1 Our company adopts different valve designs in accordance with different working conditions:
The valve seat and ball sealing surface adopt the metal to metal seal while its ball and seat adopt the special hardening treatment to ensure reliable seal, resistance to high temperature, abrasion and corrosion and a long service life. Its ball and seat are provided with good cutting and self-cleaning functions, applicable for the control over media containing grains and fibers.
2 The seat adopts the plate or compression spring load so that it can avoid the jamming between its ball and seat caused by thermal expansion and cold shrinkage, especially in a state or high or low temperature, in which the flexible seat structure with the automatic compensation function is adopted so that the amount of deformation of its ball and seat can be absorbed by the plate or compression spring, thus it can be opened or closed freely in that state with the reliable seal.
3 Its seat seal can adopt the O-ring, graphite gasket or pretightening graphite seal in accordance with working conditions and temperature; These structure types can be adopted reasonably in accordance with actual working conditions to get a satisfactory result. Our hard sealing fixed ball valve adopts the pre-ball seal structure generally with double block and bleed functions (DBB structure). Generally the floating ball valve adopts the post-ball seat seal structure, which is a kind of one-way seal structure; The floating double-way seal structure can also be adopted in case of special requirements by users.
4 The stem seal of hard sealing ball valve adopts the flexible graphite packing while the flange adopts the flexible graphite with stainless steel wire or the metal twisted graphite gasket, thus boasting the functions of intrinsic safety for fire (conforming to AP1607) and electrostatic prevention (conforming to API607). It adopts the bottom-mounting and blowout-proof structure so as to avoid the blowout of stem caused by the valve misoperation.
Advanced Manufacturing Process
1. Supersonic Flame Spray Coating Process
2. "Paired" Precision Grinding Process
3. High-quality Sealing Material
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.
