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Two Piece Ball Valve

Two Piece Ball Valve


Description of Two Piece Ball Valve:

ZECO two piece ball valve is divided into two piece trunnion mounted ball valve and two pieces floating ball valve. The two-piece floating ball valve is called because, the ball is floating, under the pressure of the medium, the ball will produce a certain displacement and the sealing surface of the outlet end can be kept tight contact to ensure the seal; The two-piece trunnion mounted ball valve is suitable for long-distance pipeline and general industrial pipeline, trunnion mounted ball valve because the ball will not move to the ball because of the pressure of the medium but will transfer the pressure of the medium to the bearing, so the torque of the trunnion mounted ball valve will be much smaller than the floating ball valve, and the life longer.

 

Features of Two Piece Ball Valve:

1. The valve seat of ZECO two piece ball valve is adopted with front design structure, this structure have both-side sealing capacity and self-relieving function. Composite material seat is floating, it loaded with spring. When it is at Close position, sealing face keeps close contact with ball to make sure there is no leakage between high pressure and low pressure;

2. ZECO two piece ball valve design with emergent sealing system-assistant seat. Once sealing is damaged or sealing face capacity is damaged, injection of sealant to assistant system will be able to seal it emergently. Emergent sealing device will also be able to be used to clean or lubricate. Stem is also designed with emergent sealing system;

3. According to wording conditions, ZECO two piece ball valve has been designed to be fire-proof structure. This design is as per API 607, once fire occurs, fire-proof structure will be able to prevent mass leakage;

4. When valve is under close status, seat blockades fluid, dregs accumulated on body cavity will be able to relieved by the relieving device.


Material of Two Piece Ball Valve:

No

Part

Material

1

Body

ASTM A182 F304

2

Bonnet

ASTM A182 F304

3

Bonnet Bolt

ASTM A193 B8

4

Bonnet Nut

ASTM A194 8

5

Bonnet Gasket

Graphite +SS304

6

Seat Ring

VITON

7

Ball

ASTM A182 F304

8

Stem

ASTM A276 304

9

Stem Packing

Graphite

10

Gland

ASTM A351 CF8

11

Stop Collar

ANSI 1025


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