Asme Turbine Flexible Fully Welded Ball Valve

Model NO.: FYV Connection Form: Flange Nominal Pressure: ANSI CLASS 150-900 Structure: Flexible Ball Valve Function: Relief Valve Application: Industrial Usage Class: 150lb-1500lb Operation: Gearbox Specification: CE, SGS HS Code: 8481804090 Material: Stainless Steel Driving Mode: Turbine Channel: Straight Through Type Type: Flexible Ball Valve Temperature: Normal Temperature Size: Dn15-250mm O-Ring Sealing: PTFE,NBR,Rptfe Trademark: FYV Origin: Wenzhou, Zhejiang The face to face dimension and connecting flange of a diameter reduced valve are per the non-reducing norms; The sizes of both valve height and actuator are reduced by one norm size.
The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

1. Indication of valve`s open and close positions
Ball, stem and handle anre one assembly unit. The stem head is a flat-square structure and the valves is easy to be seen either in the opened or closed position fro the handle is in, When the handle or the flat-square of the stem head is parallel with the pipeline the valve is in the fully opened position. While in the fully closed one when veritcal to the pipeline.
2. Locker
To prevent maloperation of the valve. A hanging lock can be used to lock it when in the fully opened or closed position. Which is very important especially for the valve mounted outside or not allowed to be opened or closed by the technological flow.
3. Stem fly-resisting structure
The stem may be pushed out by the pressure in the middle cavity of the body when the medium goes through the valve. To prevent this. A fly-resisting structure is made on the lower part of the stem. In this way even if the packing and/or thrust bearing are burnt out in a fire or damaged by other causes. The medium pressure inside of the body will have both stem flange and upper sealing face of body lightly contacted so as to prevent a lot of medium from leaking from the damaged packing place.

4. Electrostatic-proof device and five-fighting structure
Both electrostable-proof device and fire-fighting structure are designed. Once the seat ring is burnt out in case of a fire. The ball would be directly contacted with the metal of the body so as to prevent a lot of medium from leaking from the burnt place of the seat ring.

5. Unique aealing structure of seat ring
The dual-line seal and the self-combustible pressure dischargeable seat ring designed by way of combining the years ball valve manufacturing experience and the foreign advanced konw-how can ensure the full seal under a high or low pressure and a vacuum state.

6. Full or reduced diameter
The valve flow aperture is identical to the inner diameter of the pipeline(which cna be reduced one if so required by users) for the sake of cleaning.

No. Accessory Name	Material
1- Body	A105
2-Ball	A105+HCr
3-The end covering	A105
4-Seat	PTFE
5-Screw	A193-B7
6-Gasket	PTFE
7-Packing body	A105
8-Stem	A276-410
9-Packing seat	A276-410
10-Locating piece	Carbon steel
11-Packing gland	A105
12-Ring	AISI 1566
13-Packing	PTFE;Carbon fibre;Soft graphite
14-Handle	A47-667Cr.32510

 

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