Back-Pressure Regulators

55085-U (In-Line Check Valve)
59284 (SSI Flow-Through Back-Pressure Regulator)

In-Line Check Valve

The inline Cartridge Check Valve is designed t limit flow to one direction. The cartridge and flangeless fitting is for use with 1/16" O.D. tubing. The internal volume of the check valve is less than 150 μL. Place in the flow system where you wish to restrict fluid flow to one direction. These assemblies withstand system pressues of 1,000 psi (69 bar).Complete with wrench.

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55085-U Upchurch In-Line Cartridge Check Valve

SSI Back-Pressure Regulator

Prevents bubbles and improves baseline stability. This 1/16 in. flange-type unit (4 × 1.3 cm) has a unique mechanism that ensures constant back-pressure over a wide range of mobile phase flows and viscosities. It is immune to clogging and other problems common to restrictor-type devices. Easily adjusts from 1-4 atm.(15-60 psi/1-4 kg/cm2).

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58788 SSI Back-Pressure Regulator

SSI Flow-Through Back-Pressure Regulator

Designed to apply constant pressure to an HPLC detector outlet, over a wide range of mobile phase flows and viscosities. Can be used with flowmeters. Minimizes bubble formation in the detector cell, improves baseline stability. Flow-through design minimizes band spreading. Immune to clogging. Adjustable from 5-75 psi, for compatibility with any detector. Small, inert to common HPLC solvents, biocompatible flow path.

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59284 SSI Flow-Through Back-Pressure Regulator