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. BioPharm Plus Silicone (platinum-cured) Pharmed® Tygon LFL Silicone (platinum-cured) Silicone (peroxide cured) C-Flex Norprene food BioPharm Silicone (platinum-cured) Tygon food Tygon lab Norprene Tygon Fuel and Lubricant Viton® FDA Viton® 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. |
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