It is designed for sealed separation and communication between the annulus and the interior of tubing.
1 when placing an order for equipment for Т=150°С, please indicate Т150.
2 Pressure differential required to initially open the valve can be modified upon the customer’s request within the range of 6 to 16 MPa.
1. THE VALVE IS CLOSED
2. THE VALVE IS OPEN
The valve is open after generating the initial annulus pressure which exceeds the inner tubing pressure. This causes the ring to break, the piston to move downwards and circulating ports to open. To keep the the valve further open a pressure difference of 2±1 MPa must be generated.
3. THE VALVE IS CLOSED
The valve is closed after equalizing the pressure between the tubing annulus and interior. The spring brings the piston back to its initial position, the circulating ports are shut off.
Regarding equipment purchase, contact
Post: Head of sales and service development in foreign markets
Phone: +7 (34767) 5-21-01