StandaRds
API Trunnion Ball Valve
Design and Manufacture: API 6D, ASME B16.34(BS5351), API608, MSS-SP-72
Face to face dimension: ASME B16.10, API 6D
Flange connection dimension: ASME B16.5
BW connection dimension: ASME B16.5
Test and inspection: API 598, API 6D
Fire-safe design: API 607
MAIN FEATURES
Fire-SaFe Test
Approved trunnion ball valves are designed in accordance with API 607 & API SPEC 6FA. When non-metal seats are destroyed in a fire, the medium pressure push the upstream seat into the ball to cut off the line fluid and prevent internal leakage due to a secondary metal-to-metal seals. When the first soft seal is damaged, body, bonnet, stem-gasket can reach sealing function and prevent external fluid leakage.
Double body Gasket
All trunnion ball valves are equipped with two body gasket. The first body gasket is in soft material and the second in graphite (if not otherwise required), this combination assures the best seal characteristic in whatever corrosive service as well give fire safe design.
ANTi-static device In order to prevent static electricity which may light the fluid, static-conduction spring is set between the stem trunnion and the ball.
AnTi blow-ouT prooF STem
The stem is designed with integral T-Type shoulder to provide blow-out proof effectively. The design assures that the stem can not be blown out of the valve in the case of the packing being removed while the valve is under pressure.
CONTROLLED STEM & STUFFING BOX FINISH
Stem and stuffing box finish machining is a key point of control. The stem is made by cold rolling and stem surface finish is controlled by Ra=0.4, which can reduce friction for stem moving and ensure the seal. The stuffing box surface is controlled within Ra=1.6 for better sealing performance.
SOLID BALL
The solid ball used by FANGYUAN provides straight through flow and real full-port performance characteristics. Hollow ball or cored cavity ball are not used for products.
BALL SEAT ALIGNMENT
Stem/Flange mechanical stops ensure control and precise alignment over ball rotation.
LONGEVITY OF LIFE
Special consideration was devoted to the attainment of enhanced life and operation of our valve throughout design, development, testing and manufacturing stages. Valve designs combined with the selection of advanced materials are such that long periods of inactivity should not affect the operations of efficiency.
FLOW CAPACITY
Valve design allows for high flow capacity in liquid or gas services regardless of whether the media is clean or dirty. Full port valves allow for pigging and ensure maximum flow capacity.
FIELD REPARAIBLE
Simple user friendly design allows for quick and easy part replacement requiring minimal"Down Time".
EMERGENCY SEALANT INJECTION
For 6" full port and larger each valve is supplied complete with emergency stem sealant injection feature.
INSPECTION AND TESTING
Every valve is subjected on routine base to different non-destructive testing, like the dye penetrant test on butt weld ends, on all hard faced and cladding areas. Non-destructive test are also carried out on the critical areas as defined by ANSI B. 16.34.
Optional examinations like:
Radiographic
Magnetic particicles
Ultrasonic
MARKING AND IDENTIFICATION
Each valve is identified on proper name plate and on valve body as required by MSS- SP 25, B 16.34 Name plate carries all information on rating, size, valve body and trim material, customer tags. On body, marking includes material designations (per ASTM) and heat code and of course the trade mark.
NO. | Part Name | CS to ASTM | AS to ASTM | SS to ASTM |
| Type A105 | Type F22 | Type F304(L) | Type F316(L) |
| 1 | Body | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
| 2 | Gasket | Corrugated SS + graphite | SS + PTFE |
| 3 | Bonnet Bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
| 4 | Pin | A276 420 | A276 304 |
| 5 | Gland | A276 410 | A182 F304(L) | A182 F316(L) |
| 6 | Gland Eyebolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
| 7 | Gland Nut | A194 2H | A194 4 | A194 8 | A194 8M |
| 8 | Yoke Nut | A276 410 |
| 9 | H.W. Nut | A194 2H | A194 4 | A194 8 | A194 8M |
| 10 | Nameplate | SS |
| 11 | Hand wheel | A197 |
| 12 | Gland Flange | A216 WCB | A351 CF8 |
| 13 | Stem Packing | Flexible Graphite | PTFE |
| 14 | Bonnet | A105 | A276 304 | A182 F304(L) | A182 F316(L) |
| 15 | Stem | A182 F6 | A182 F304 | A182 F304(L) | A182 F316(L) |
| 16 | Disc | A276 420 | A276 304 | A276 304(L) | A273 316(L) |
| Suitable Medium | W.O.G. etc | W.O.G. etc | HNO3,CH3OOH etc |
| Suitable Temperature | -29ºC~425ºC | -29ºC~550ºC | -29ºC~180ºC |
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.
