Pure-Flo®

PURE-FLO ® INTEGRAL CHROMATOGRAPHY VALVE* 69
The Integral Chromatography Valve provides
the process needs of three (3) P&IDs, utilizing
five valves in one integrally machined assembly,
dramatically reducing contact surfaces and hold
up volume.
A
*Patent Pending
OPTION #1 OPTION #2
A
In a typical chromatography process, there is an
assembly of five or six diaphragm valves that connect
the chromatography column to the process piping (see
figure #1). Manipulating the five or six valve assembly
allows product to flow through the chromatography column
in the forward and reverse direction, as well as
bypass the column completely. The Pure-Flo Integral
Chromatography Valve Assembly accomplishes this task,
utilizing five valves, while retaining flexibility, minimizing
dead legs in the process piping and reducing the overall
space needed for the assembly.
MATERIALS AND SPECIFICATIONS
• 316L Stainless Steel, ASTM A479 wrought bodies,
sizes 1.0" through 4.0".
• Standard ANSI 316L Stainless Tubing up to 4".
• Assembly available with FDA compliant PTFE and
EPDM diaphragms.
• Interior surface finishes available with mechanical finishes
from 11μ in. R a to 35μ in. R a . Electropolish over
mechanical services is also available.
• PAS, stainless steel, nylon coated, PVDF coated or
white epoxy coated manual bonnet assemblies are
available.
• Diaphragm driven pneumatic Advantage Actuators
are available.
FIGURE 1
SECTION A-A
OPTION #3
Valve
Closed
DIVERT VALVES