9
T: 936-588-8350 • F: 936-588-8381 • www.craneenergy.com
Duo-ChekValves
StyleH
†
RetainerlessCheckValves
HighPerformanceCheckValve for CriticalApplications
BecauseRetainerlessDuo-Chek
valves have no body penetrations
potential leak paths through the
valveareeliminated.Thismakes the
RetainerlessDuo-Chek ideally suited
tomeet the following critical service
applications:
• Hydrocarbon processing
• Chemical processing
• Any industry concernedwith fire
hazards or environmental safety
Key features of theDuo-ChekStyleH
wafer check valve include:
• Awide selection of body and plate
materials
• A choice of metal-to-metal or resilient
sealing
Item Part
No. No.
1
Body
2
Plate
3
Seal
4
StopPin
5
HingePin
6
Spring*
7
Pin Insert
8
SnapRing
9
BodyBearing
10
PlateBearing
11
SpringBearing
* Independent spring in valve sizes
6" and larger.
For critical applications, StyleH retainerlessDuo-Chek
valves feature a one-piece bodywith no pin retainer
penetration through the body.
These high performance valves utilize the same internal
design of other Duo-Chek valveswith all the unique
features and advantages built into them.
• A full range of pressure classes
and sizes
• A variety of end connections
• Designs available includewafer, lug
and double flange.
• Internals easily removed for field
replacement under normal inspec-
tions andmaintenance procedures
The advanced design of theDuo-Chek
providesmany operational benefits
to theuser, which combinedwith its
more compact size and lower weight,
make theDuo-ChekStyleH an excel-
lent alternative to a standard swing
check valve.
Remarkable advantages include:
• Independent springaction (on6" and
larger) and plate suspensionon
larger valves
• Free release flat seats
• Springs provide superior response
to flow reversal or deceleration
• Minimal water hammer
• Savings in purchase priceand
installation costs compared to a
conventional swing check valve
• Single body designwith nobody
cartridge
†
Installationdimensions for these valves areas shown onpages 7-8.
"
4FDUJPO$
4FDUJPO "
"
QMBDFT
5IJT WJFX JT SPUBUFE UP TIPX UIFBDUVBM
PQFSBUJOHQPTJUJPOPG UIF WBMWF 5IFQJONVTU
CF WFSUJDBM GPS IPSJ[POUBM GMPX
$
$
'MPX%JSFDUJPO
