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Q41F
J-VALVES
BV17
Basic Information
Name: 2PC Cast Steel Flange Floating Ball Valve
Manufacturer:ZHEJIANG J-VALVES FLUID EQUIPMENT CO., LTD
Design Features
Precision casting process
Blow - Out Proof Stem design
Equipped with anti - static device
With locking handle
Has ISO 5211 direct mounting interface
Complies with API607 fire - proof standard
Specifications
Size: 1/2" - 10"
Design Standard: API608/API6D
Flange Standard: ASME B16.5
Face - to - Face Dimension: ASME B16.10
Testing Standard: API598
Materials
Body: WCB/CF8/CF8M
Ball: SS304/SS316
Stem: SS304/SS316
Seat: PTFE/RPTFE/PPL
Other special materials such as Duplex stainless steel, Super duplex stainless steel ,bronze, titanium alloy, Inconel, Monel, etc. can also be used for manufacturing.
Operating Conditions
Working Temperature (W.T): -27~150~220°C~280°C
Working Pressure (W.P): 150Lb - 300Lb~600Lb
Technical drawings
DRAWING FLOATING BALL VALVES.pdf
Why Choose Our Floating Ball Valves?
1.Reliable seat seal floating ball valves
The structure design of elastic sealing ring has beeen adopted for floating ball valves. This seat design features a bigger sealing pressure ratio between thering 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 Ball sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.
2.Fire safe design floating ball valves
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 ithe sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature.J-VALVES's specially designed structure of auxiliary metal to metal seal is provided to effectively preventboth internal and external Ball leakage of the valve. As required by customers, J-VALVES's floating ball vallves with fire safe design can meet the requirement of API607,API 6FA,BS 6755 and JB/T 6899.
3.Reliable stem seal floating ball valves
The blow-out proof design has been adopted forthe 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 back seat, 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.
V type packing structure has been employed to efffectively transform the pushing force of the gland flange and the medium pressure into the sealing force against the stem.
Based on customers' requirement, a packing tightening design may be employed to obtain more reliable stem packing seal, which is loaded by beveling spring.
4.Anti-staticfeature floating ball valves
The traditional packing flange design has been imoroved 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 internallywith a PTFE bush to prevent the galling against and friction between the stem, which can also reduce the operation torque of the valve.
5.Gear operation prevention
To prevent the ball valve from gear operation, the key lock with 90 of open and close positioning pad has been provided, which can be lockable as required. At the stem head, where the lever fixes, a flat is so designed fhat the valve opens with the lever in parallelto piping, and with the lever right-angled to the piping, the valve is closed. So, it is ensured that the valve indicator of open and close can never make mistake.
