The TP41Y valve sleeve type drainage oilfield valve is a new type of drainage shut-off valve. It adopts a valve core and cage structure, with balance holes on the valve type. The valve core and seat are connected, so the valve has the advantages of smooth opening, lightweight, and reliable sealing. Especially, the valve adopts a double cage type sleeve structure, which separates the medium channel from the seal and protects the sealing gasket, making the valve have better erosion resistance and drainage performance, greatly extending its service life. Its service life is more than twice that of the original drainage valve.

Structural characteristics of TP41Y valve sleeve type drainage oil field valve:

1. Valve sleeve type drainage oilfield valve is a new type of throttling, shut-off, and venting product. The valve adopts cage shaped labyrinth throttling, with multi-stage throttling effect, obvious throttling effect, reliable sealing, and convenient operation and maintenance.

2. The valve adopts dual sealing (hard and soft sealing) to ensure reliable sealing. The hard alloy cover can be more resistant to air flow erosion and wear, and the dual sealing can achieve zero leakage under high-pressure gas medium conditions. The valve has a long service life.

3. The sealing surface of the valve seat adopts a tapered seal, which is conducive to cleaning the dirt attached to the sealing surface of the valve itself.

4. The valve disc of the valve is equipped with a balance hole and a piston type seal, ensuring stable operation under full pressure difference conditions for opening/closing, with light and flexible opening and small opening/closing torque.

5. The packing adopts a V-shaped packing structure with self sealing ability, which does not require adjustment and is extremely lightweight to open and close. There is an auxiliary sealing grease injection structure at the packing box, which ensures reliable sealing performance of the valve packing.

6. This valve can be repaired online, and the pipeline can replace a series of vulnerable parts such as packing under pressure.

7. This valve is equipped with a large drain hole at the bottom of the valve, which should be opened if necessary to clean the dirt inside the valve.

8. The outer rim of the discharge valve disc is equipped with an O-ring seal, which has self-cleaning and sealing functions during opening/closing, and throttling and pressure reducing functions during discharge.

Working principle of TP41Y valve sleeve type drainage oil field valve

1. Normally closed state: The hard seal of the valve disc is pressed against the seat protrusion, forming a hard seal, while the soft seal embedded in the valve disc

The sealing is tightly pressed against the end face of the valve seat, forming a second seal. The dual quality sealing structure ensures zero leakage of the valve, and due to the balanced opening of the valve disc

Holes allow the valve disc to receive less force when closing or opening, and also provide less torque when opening or closing the valve.

2. Throttle discharge state: The valve disc seal is separated from the valve seat, and due to the presence of a balance hole at the valve disc, the valve opening is extremely light

It's convenient. After the valve is opened, the medium and impurities in the pipeline flow through the valve sleeve and valve seat, while achieving throttling and discharge. Valve disc and seat tightness

The cover uses a cushion angle to change the flow direction of the medium, and has a self-cleaning function to prevent impurities from being carried by the sealing device.

3. Closed state: After the medium in the pipeline is discharged, the valve is closed, and the medium enters the valve seat channel from the oblique angle of the gasket, increasing the flow resistance coefficient,

The flow rate accelerates, the oblique angle changes the direction of the medium flow, generates vortices, and the radial force of the medium on the end face of the valve seat increases, achieving the blowing of the valve seat opening. When the valve disc seal is close to the valve seat, the clearance between the gasket and the valve seat channel prevents larger particles from flowing towards the seal. In addition, with the further increase of flow rate and the blowing of lateral force of the medium, the impurities in the seal have been completely cleaned when the valve is closed, ensuring the sealing performance of the valve after discharge, thereby further ensuring that the sealing performance can also reach no leakage after discharge. Therefore, it greatly improves and extends the service life of the valve sleeve type drainage oil field valve.