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Dual-acting Circulation Valve

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The dual-acting circulation valve is used to establish a circulation passage between the inside of the coiled tubing and the annulus. When the tool string needs to be circulated from the middle of the pipe string, the circulation hole is opened to establish a circulation channel by means of pitching pressure.When the tool is stuck and is buried, and the flow is too small to pump the ball normally, open the rupture disk by holding the pressure to increase the flow, and then cut the pin by pitching a ball to open the circulation valve to clean the well with large displacement.


Features:

1. Simple structure and high reliability;

2. Pressure to break the rupture disc, establish a small cycle;

3. The breaking pressure of the rupture disk can be adjusted.




Size

OD

ID

Length

Burst Pressure

Connection

1.69″

Ø43.0mm

Ø10.0mm

350.0mm

optional

1"AMMT

2.125″

Ø54.0mm

Ø20.0mm

365.0mm

optional

1.5"AMMT

2.875″

Ø73.0mm

Ø32.0mm

400.0mm

optional

2 3/8"PAC




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