0086-577-67316655
fyv@fyvvalve.com
+8613588924788
Fangyuan Industrial Park, Anfeng Industrial Zone. Obei and Wenzhou, Zhejiang. China.
●Series code:The series code of our company is FY
●Special requirement code: K-Antisulphur type D-Low temperature type EX-Pole extending type M-Ground burying type
●Valve type code: Q-Ball valve
●Driving manner code: 3-Worm wheel and screw trensmission 6-Air driving 7-Hydrodynamic driving
8-Air-hydro operated 9-Electric driving 9e-Explosion electric driving
●Connecting type code: 1-The interior whorl joining 2-The other whorl joining 4-The flange joining
6-To welding joining 7-To inserting joining 8-The caliper joining
●Design feature code:1-Direct floating type 4—Floating type three direct links of Model L 5—Floating type three direct links of Model T
7-Direct regular type 8-Regular type Model T three direct links 9-Regular type Model L three direct links
●Sealing formation code: Y-Hard alloy F-Strengthen the polytetrafluoroethylene (PTFE) N-Nylon PPL-Counterpoint polyphenyl
●Pressure grade code: The 10 times of the nominal pressure MPa, pound grade io practical number
●Body material code: C-WCB I-WC6、ZG1Cr5Mo V-WC9、ZG20CrMoV P-CF8、ZG1Cr18Ni9Ti
R-CF8M、ZG1Cr18Ni12Mo2Ti S-CF3 L-CF3M F-LCB N-LC3
The seat material of general purpose ball valve employs generally non-metal material, such as PTFE. Limited by the seat material, the general purpose ball valve can not be used in case of high temperature application, application medium with solid articles and ash dregs neither. So the application scope of general purpose ball valve is restricted partialy. Taking this into consideration, our company has developed successfully after years of hard study full range of metal to metal sealed ball valve, including floating ball valve and trunnion ball valve, which have found extensive applications in such industries as petroleum, chemistry, power, metallurgy and light industry.
Except for such features as wrong operation prevention, stem blow-out proof, mounting, pad provided,the metal to metal sealed ball valves made by our company's possess the following unique features.
Metal to metal sealed design has been employed perfectly for the ball and seat, which has also adopted the advanced hardening technologies, such as ultro-sonic spray coating, nickel base spray welding, surface specially hardening, stellite spray welding, ceramic material with high strength and hardness, and so on. Surface hardness of the ball and seat may generally reach more than HRC6o, maximun is up to HRC74, and application temperature of the material may be up to 540℃, maximun is 980℃.
Combining strength of the material gets to more than 10000 PSi. Besides, the surface materials also possess very good resistance properties of friction and impact. Metal to metal sealed ball valves made by our company's are suitable for use in most critical working conditions.
In the case of high temperature working condition, the valve seat and ball would easily get stuck due to heat expansion, and the valve could not be open. Metal to metal sealed ball valves made by our company's are employ the patented design of bevelling spring loading, which would absorb the heat expansion of parts caused by the bevelling spring. So it is ensured that the valve would not get stuck and be opened and closed easily in the case of high temperature condition.
The metal to metal sealed structure has ben adopted for the valve sealing surface design. Packing is so designed with graphite, and gasket is so designed with stainless steel, plus graphite that the valve can assure reliable tightness even under fire condition.
A unique technique has been employed for the ball grinding, which makes the ball surface reach extreme round and smooth by rotating the ball and grinding apparatus at different directions in space. The tightness function of the valve meets completely and exceeds the standard requirement.
Metal to metal sealed ballvalve with its body seat, ball, other metal parts, and so forth, closely contact with each other, having naturally formed a static electricity passage. In this respect, there is no need to provide special anti-static device.
Our company's metal to metal sealed trunnion ball valve is in general of the front ball sealing structure. Actually, two seats of the metal to metal sealed trunnion ball valve can both cut off separately the medium at inlet and outlet to realize double-block function. When the valve is closed, the body cavity and both the bore ends can be blocked with each other even if both ends of the valve are under pressure at the same time. whereas the medium left in the body cavity may relieve through the relief valve.
Our company's metal to metal sealed floating ball valve is of behind ballsealing structure,employing in general single direction tightness. The flow direction is indicated on the valve body. If specialy required by customers,Our's bi-direction sealing design may be selected.
Typical Drawing and Parts Composition
| Parts No. | Parts name | Materials | ||||
| WCB/13Cr | WCB/304 | WCB/316 | CF8 | CF8M | ||
| 1 | Body | ASTM A216 WCB | ASTM A216 WCB | ASTM A216 WCB | ASTM A351 CF8 | ASTM A351 CF8M |
| 2 | Packing | Graphite | Graphite | Graphite | Graphite | Graphite |
| 3 | Gland | ASTM A182 F6a | ASTM A182 F304 | ASTM A182 F316 | ASTM A182 F304 | ASTM A182 F316 |
| 4 | Gland flange | ASTM A216 WCB | ASTM A216WCB | ASTM A216 WCB | ASTM A351 CF8 | ASTM A351 CF8M |
| 5 | Capscrew | ASTM A193 B7 | ASTM A193 B7 | ASTM A193 B7 | ASTM A193 B8 | ASTM A193 B8M |
| 6 | Circlip | Carbon steel | Carbon steel | Carbon steel | Stainless steel | Stainless steel |
| 7 | Stop collar | Carbon steel | Carbon steel | Carbon steel | Stainless steel | Stainless steel |
| 8 | Lever | Carbon steel | Carbon steel | Carbon steel | Carbon steel | Carbon steel |
| 9 | Circlip | Carbon steel | Carbon steel | Carbon steel | Stainless steel | Stainless steel |
| 10 | Thrust washer | 304 Sheet+Graphite | 304 Sheet+Graphite | 316 Sheet+Graphite | 304 Sheet+Graphite | 316 Sheet+Graphite |
| 11 | Stem | ASTM A182 F6a | ASTM A182 F304 | ASTM A182 F316 | ASTM A182 F304 | ASTM A182 F316 |
| 12 | Seat seal | Graphite | Graphite | Graphite | Graphite | Graphite |
| 13 | Seat | ASTM A182 F6a+ WC-Co |
ASTM A182 F304+ WC-Co |
ASTM A182 316+ WC-Co |
ASTM A182 F304+ WC-Co |
ASTM A182 F316+ WC-Co |
| 14 | Ball | ASTM A182 F6a+ WC-Co |
ASTM A182 F304+ WC-Co |
ASTM A182 316+ WC-Co |
ASTM A182 F304+ WC-Co |
ASTM A182 F316+ WC-Co |
| 15 | Seat seal gland | ASTM A182 F6a | ASTM A182 F304 | ASTM A182 F316 | ASTM A182 F304 | ASTM A182 F316 |
| 16 | Spring | Inconel 750 | Inconel 750 | Inconel 750 | Inconel 750 | Inconel 750 |
| 17 | Gasket | 304 Sheet+Graphite | 304 Sheet+Graphite | 316 Sheet+Graphite | 304 Sheet+Graphite | 316 Sheet+Graphite |
| 18 | Bonnet | ASTM A216 WCB | ASTM A216 WCB | ASTM A216 WCB | ASTM A351 CF8 | ASTM A351 CF8M |
| 19 | Stud | ASTM A193 B7 | ASTM A193 B7 | ASTM A193 B7 | ASTM A193 B8 | ASTM A193 B8M |
| 20 | Nut | ASTM A194 2H | ASTM A194 2H | ASTM A194 2H | ASTM A194 8 | ASTM A194 8M |
Note: The chart above only lists out some common composition of steel ba valve parts. We may provide other different parts material composition according to the customer's request or the actual valve working condition.
Forged Steel Metal to Metal Sealed Floating Ball Valve
Our company's metal to metal sealed floating ball valve is in general employing casted steel valve body. If required by customers, forged steel valve body is also available, of which the flange dimensions and face to face dimensions are the same as that of cast steel ball valve.
Main Sizes and Weights
Refer to that of floating ball valve for main dimensions and weights of metal to metal sealed floating ball valve. The flange dimensions and face to face dimensions are the same as that of floating ball valve.
Products Range
Products range of metal to metal sealed floating ball valve as follows.
| Size | NPS | ¹/₂ | ³/₄ | 1 | 1 ¹/₄ | 1 ¹/₂ | 2 | 2 ¹/₂ | 3 | 4 | 5 | 6 |
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | |
| Pressure stage or nominal pressure | Class150/PN20 | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ |
| CLass300/PN50 | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | - | - | |
| Class600/PN110 | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | - | - | - | |
| Class900/PN150 | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | - | - | - | - | |
| Class1500/PN260 | ☆ | ☆ | ☆ | ☆ | △ | △ | - | - | - | - | - | |
| PN16 | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | |
| PN25 | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | △ | |
| PN40 | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | - | - | |
| PN63 | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | - | - | - | |
| PN100 | ☆ | ☆ | ☆ | ☆ | ☆ | △ | △ | △ | - | - | - |
Note: For the manual ball valve, indicates that Lever is suggested, △ indicates that worm gear is suggested.
Typical drawing and parts composition
| 1-Body | 15-Wormgear |
| 2-Stud | 16-Ball |
| 3-Nut | 17-O ring |
| 4-O ring | 18-Seat |
| 5-Bush | 19-Spring |
| 6-Washer | 20-Gasket |
| 7- Stem | 21-Stud |
| 8-Key | 22-Nut |
| 9-Key | 23-Bonnet |
| 10-O ring | 24-Trunnion |
| 11-Gasket | 25-O ring |
| 12-Gland | 26-Adjusting cushion |
| 13-Bolt | 27-Down end cap |
| 14-O ring | 28-Bolt |
Main Sizes and Weight
Refer to that of trunnion ball valve for main sizes and weights of metal to metal sealed trunnion ball valve, of which the flange dimensions and face to face dimensions are the same as that of trunnion ball valve.
Products Range
Products range of metal to metal sealed floating ball valve as table.
| Size | NPS | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 |
| DN | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | |
| Pressure stage or nominal pressure | Class150/PN20 | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ |
| CLass300/PN50 | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | - | |
| Class600/PN110 | △ | △ | △ | △ | △ | △ | △ | △ | - | - | - | |
| Class900/PN150 | △ | △ | △ | △ | △ | △ | - | - | - | - | - | |
| Class1500/PN260 | △ | △ | △ | △ | △ | △ | - | - | - | - | - | |
| Class2500/PN420 | △ | △ | △ | △ | - | - | - | - | - | - | - | |
| PN16 | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | |
| PN25 | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | - | |
| PN40 | △ | △ | △ | △ | △ | △ | △ | △ | △ | △ | - | |
| PN63 | △ | △ | △ | △ | △ | △ | △ | △ | - | - | - | |
| PN100 | △ | △ | △ | △ | △ | △ | △ | △ | - | - | - | |
| PN160 | △ | △ | △ | △ | △ | - | - | - | - | - | - |
Note: For the manual ball valve, △ indicates that worm gear is suggested.
Forged steel metal to metal sealed trunnion ball valve
Our company's metal to metal sealed trunnion ball valve is in general employing casted steel valve body. As per customers' requirement, forged steel valve body is also available, of which the flange dimensions and face to face dimensions are the same as that of cast steel trunnion ball valve.
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