127.5mm 105Mpa Sleeve Type Drain Valve For High Pressure Drill Stem Testing Service

Sleeve Type Drain Valve For High Pressure Drill Stem Testing Service

The Sleeve Type Drain Valve is the part of drill stem testing tool string. The drain valve  consists of a ported body, sliding sleeve, and rotating nut, which controls the position of the sliding sleeve. The sleeve either covers or exposes the ports in the body of the valve. A drain collar and associated components are required when relieving pressure.

The drain valve is installed between any two valves that may come out of the hole with pressure or fluid trapped between them. Pressure is relieved by installing the drain collar and drain nipples on the drain valve. Valves, lines, or sample bottles may be attached to the drain nipples depending on the desired disposition of the fluid in the string. After the drain collar assembly is attached, the ports in the tool are exposed by using a chain wrench or pipe wrench to rotate the drain nut, which moves the sliding sleeve.

Technical parameter of Sleeve Type Drain Valve