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5. Place two o-rings in the o-ring grooves on each valve stem. Screw one
valve stem into the cell cap on the inlet side of the cell. Tighten the valve
stem completely. To increase the life of the valve stem and cap, apply a
thin layer of high-temperature thread lubricant (#165-44) to the conical
face o-ring on the pointed end of the valve stem.
6. Invert the cell body and carefully pour the sample into the cell, leaving
the appropriate amount of void space as indicated by the chart below. Be
careful not to spill fluid on the o-ring inside the cell.
7. Place an o-ring in the cell and another on the outlet cell cap (they are the
same sized o-ring). To facilitate removing the cell cap at the end of the
test, lightly apply a coat of stopcock grease (#153-55) to the cell cap o-ring.
8. Inspect the cap locking screws. If the cap locking screw are no longer
sharply pointed, there is a possibility of stress-failure and the screw(s)
should be replaced.
9. Inspect the cap locking screw seats in the cell cap (indentures in the cell
cap). If the cap locking screw seats are no longer round, there is a possi
-
bility of stress failure and the cap should be replaced.
10. Place a pre-soaked ceramic disk filter on top of the cell o-ring and gently
push it downward so it contacts the o-ring. If you need to test with filter
paper, refer to page 35 for instructions on using the spacer.
API Recommended Void Space
Fluid / Temperature
Void Space
Fluid Volume
Water-based drilling fluid. < 300°F
0.6" (1.5 cm)
138 mL
Water-based drilling fluid. > 300°F
1.5" (4.0 cm)
86 mL
Oil-based drilling fluid. < 350°F (176°C)
1" (2.5 cm)
115 mL
Oil-based drilling fluid. > 350°F (176°C)
Use 500 mL Cell
Temperature – Pressure – Volume: Recommendations
Be Careful Not to spill fluid on the O-ring Groove inside the Cell
Void Space in a 1,500 psi rated cell body
