TH pumps are heavy wall, stationary barrel, bottom anchor design tubing pumps. Available with a mechanical lock hold down (THM), TH pumps give the largest possible bore size for a given tubing size, meaning the maximum amount of displacement with each stroke and therefore the greatest possible production.

The tubing pump is a thick wall fixed barrel pump designed in accordance with internatioal standards. They are usually used to produce wells that contain more fluid than plug-in sucker rod pumps can. Unlike rod pumps, the working plunger of these pumps is part of the tubing string, which enables them to discharge more fluid than the inserted pump. The hold-down assembly is a separate part that is usually inserted into the assembly prior to delivery at site. The moving assembly is installed at the end of the sucker rod string. The in-line pump includes a mechanism located at the bottom of the moving assembly to recover the hold down assembly when the valve needs maintenance.

The TH tubing pumps feature heavy-walls and full-barrels.
These pumps can be assembled with:
⦁ Tap-type or lock-type, standing-valve pullers;
⦁ Box-end and pin-end plungers;
⦁ mechanical seating assemblies;
All metal, thick-wall pump barrel tubing pump has both heavy structure and stroke design. For the determined tubing size, its maximum hole diameter can achieve the maximum output. The integral plunger does not need a joint, which reduces the corresponding faults, and is precisely honed from end to end to ensure that the plunger has a perfect hole diameter and improve the work efficiency.