Keep your session open?
Ending In 
Your shopping session has expired.
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Masterflex I/P Tubing Options

Achieve top performance from your Masterflex I/P pump heads when you use precision-extruded tubing. Tubing is manufactured to tight tolerances that match our I/P pump heads. Choose from precision tubing or high-performance precision tubing. High-performance precision tubing has a thicker wall that improves pressure generation, suction lift, ability to pump viscous fluids, and tubing life. Choose from over a dozen different formulations.

Precision Tubing Specifications

Tubing size I/P 26 I/P 73 I/P 82
Inside diameter (nominal) 0.25" (6.4 mm) 0.37" (9.5 mm) 0.5" (12.7 mm)
Hose barb size (nominal) 1/4" (6.4 mm) 3/8" (9.5 mm) 1/2" (12.7 mm)
Flow range (approximate) with 20 to 650 rpm drive 0.12 to 4 L/min
(0.03 to 1.1 GPM)		 0.2 to 8 L/min
(0.05 to 2.1 GPM)		 0.4 to 13 L/min
(0.1 to 3.5 GPM)
Maximum pressure, continuous** 25 psig (1.7 bar) 10 psig (0.7 bar)
Maximum pressure, intermittent** 40 psig (2.7 bar) 20 psig (1.4 bar)
Maximum vacuum** 26" Hg (660 mm Hg) 20" Hg (510 mm Hg)
Suction lift 29 ft H2O (8.8 m H2O) 23 ft H2O (7.0 m H2O)

High-Performance Precision Tubing Specifications

Tubing size I/P 70 I/P 88 I/P 89
Inside diameter (nominal) 0.37" (6.4 mm) 0.5" (12.7 mm) 0.62"
(15.88 mm)
Hose barb size (nominal) 3/8" (9.5 mm) 1/2" (12.7 mm) 5/8" (15.88 mm)
Flow range (approximate) with 20 to 650 rpm drive 0.24 to 8 L/min
(0.06 to 10 GPM)		 0.5 to 15 L/min
(0.05 to 2.1 GPM)		 0.52 to 17 L/min
(0.14 to 4.5 GPM)
Maximum pressure, continuous** 25 psig (1.7 bar) 20 psig (1.4 bar) 15 psig (1.0 bar)
Maximum pressure, intermittent** 40 psig (2.7 bar) 35 psig (1.4 bar) 25 psig (1.4 bar)
Maximum vacuum** 26" Hg (660 mm Hg) 24" Hg (610 mm Hg)
Suction lift 29 ft H2O (8.8 m H2O) 27 ft H2O (8.2 m H2O)

**Actual performance varies depending on tubing formulation—values shown are for firm tubing.