CONVENTIONAL TUBING PRESSURE OPERATED GAS LIFT VALVES
UNITED 'AF' Series gas lift valve is designed to open or close on a fluid load signal. When a predetermined fluid load is reached, the AF Series Valve opens. This, allows casing gas to enter the tubing string and lift the fluid to the surface. The AF Series Valve will remain open until the fluid load drops to the closing pressure pre-set on the valve. The AF Series Valve uses a cross over seat which allows the valve to accept a check and to fit into a conventional type mandrel. The AF Series Valve is intended for use on wells having a high continuous flow rate. It is also well suited to multiple string completions using the annulus as a common source of injection gas. Features:   Uses existing pressure valve mandrels. Mechanical stops limit bellows travel in both directions, which prevents overstressing by keeping bellows travel within design limits. Utilizes standard check valves. Utilizes full line pressure. Not affected by temperature. No dome charge is used in the valve, therefore the valve is not affected by temperature.
AF-10    SERIES VALVE SPECIFICATIONS

O.D. (In)	LENGTH (In)	SEAT SIZE (In)	BELLOWS AREA (Sq.In)	AV/AB	1-AV/AB	CEF %
1	13-3/4	8/64		0.040	0.960	4.2
		10/64	0.31	0.062	0.938	6.6
		12/64		0.089	0.911	9.8

 

Licence No.API 5CT-0565
Licence No.API 5L-0424
Licnece No.API 11V1-0014
Licence No. API-7-0393
Licence No.API-7-1-0393

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