PressureReliefValves
XX
Prevent systemover-pressurization
UpchurchScientific
®
PressureRelief Valves are ideal for preventing
systemover-pressurization.Theseproductsprotectsystemcomponents
bydivertingfluidflowautomaticallywhen inlinepressureexceeds the
set limit. Choosebetweenpreset 100 psi (7 bar) and 5 psi (0.3 bar)
assemblies,bothshippedwithFlangelessFittings.The100psiversion
isagood, general purposevalve,while the5psi version isperfect for
protecting syringeandperistalticpump systems (seepages 93–108).
The void volumeof both relief valves is lowdue to the small 0.020”
(0.50mm) thru-holes in the valve teebody.
IfyouwishtohavethePressureReliefValveopenatadifferentpressure
than 5 or 100 psi, simply combine one of the other replacement
Back Pressure Regulator Assemblies listed on page 152 with the
P-612 PressureRelief ValveTee. Choose theP-612S for larger bore
tubingandhigher flowapplications.
Ultra-LowVolumeBack
PressureRegulators (BPR)
XX
Wetted flowpathmaterials: PEEK, perfluoroelastomer, andETFE
XX
Availablepressure settings of 100or 500psi (7or 34bar)
XX
Low swept volumeof only 6µL
Ultra-LowVolumeBackPressureRegulators
(BPRs)weredeveloped tominimizeswept
volume, which is especially important
for multi-detector applications. With a
maximum swept volumeof only 6 µL*, it
isnearly impossible todetect theseBPRs
aspartof yourfluidpathway.Tominimize
the swept volume added to your flow
path, we recommend trimming the length of the attached tubing.
Andbecause theflowpath is completelypolymeric, youareassured
of biocompatibility.
PleaseNote:OurUltra-LowVolumeBackPressureRegulatorscannot
beused as check valves due to their unique internal design. Tryour
Micro-Volume InlineCheckValveonpage149.
*Themaximum internal swept volume listedabove is for thebackpressure regulatoronlyanddoesnot
include thevolumeof theattached tubing lines.
SPECIFICATIONS&DETAILS
BackPressure
Setting
psi (bar)
FlowRate
Recommendations
Recommended
PressureRange
psi (bar)
1/16”OD Tubing
M-410
100
2
(7)
2
Optimal: 100µL–1mL/min
Max.: 4mL/min
40–150 (3–10)
PEEK, 0.010” ID
M-412
500
2
(34)
2
Optimal: 100µL–1mL/min
Max.: 4mL/min
250–525 (17–36)
PEEK, 0.010” ID
M-420
100
3
(7)
3
Optimal: 3–8mL/min
Max.: 10mL/min
40–150 (3–10)
PEEK, 0.020” ID
1
All datageneratedusingwater at room temperature.
2
Set at a flow rateof 0.5mL/min.
3
Set at a flow rateof 5mL/min.
P-612
PressureRelief ValveTee
IncludesFlangelessFittings
for 1/16”OD tubing
(Drawing isnot actual size)
U-455
PressureRelief Valve
IncludesFlangelessFittings
for 1/16”OD tubing
(Drawing isnot actual size)
1.0”
(2.54cm)
2.50”
(6.35cm)
M-410
MicroVolume
BPRAssembly
Attached tubingnot shown
0.81”
(2.06cm)
1.30”
(3.30cm)
PartNo. Description
Pressure
Setting
Tubing
OD Includes
Swept
Volume
ULTRA-LOWVOLUMEBPRs
M-410
LowFlow
100psi (7bar)
1/16” XP-230
6µL
M-412
LowFlow
500psi (34bar) 1/16” XP-230
6µL
M-420
HighFlow
100psi (7bar)
1/16” XP-230
6µL
PRESSURERELIEFVALVES
U-455
PressureReliefAssembly 5psi (0.3bar)
1/16” XP-201
148µL
U-456
PressureReliefAssembly 100psi (7bar)
1/16” XP-201, wrenches 139µL
P-612
PressureRelief Tee
1/16” XP-201
14µL
P-612S
PressureRelief Tee
3/16” XP-201
348µL
154
CHECKVALVES&
PRESSUREREGULATORS
Back PressureRegulators&
PressureRelief Valves
