MARCH
1998

World Oil

EXPLORATION  DRILLING  PRODUCTION

 

Hydraulically actuated valve opener. Dartt™ Valve Co., Spring, Texas, offers a special metal insert which-in its location directly below, and within a housing connnected to the traveling valve-is exposed to fluid movements as the pump plunger travels up and down.The solid insert features two "hydraulic amplifiers" that contact the wall of the housing and are moved upward within the housing on the downstroke by hydraulic pressure, into enlarged passage- ways in the housing wall that then allow fluid bypass, Fig. 6. In the same motion, the angled upper tip of the insert is driven upward to contact and physically unseat the travelling valve ball. This action thus helps open the valve and prevent gas locking.

The second feature of the insert is that on the upstroke, it is moved downward within the housing past the fluid bypasses such that each of the two enlarged diameters sealingly contact the housing wall. This creates multiple secondary seals to backup the traveling valve should it be lodged open by sand.

The Dartt valve is installed in the bottom of the conventional double female traveling valve cage by removing the plug that retains the ball and seat, i.e., the unit replaces that plug and is tightened in the same manner as cages.

worldoilimg.jpg (43959 bytes)

 

 

||Brochure| Valve | Gas Lock | Fluid Pound | Heavy Crude | Information | Periodicals | Testimonials | Installation | New Products | FAQ's | Contact Us | Home ||