Page 56 - ParkerQuickCouplingCatalog38002010

Quick Coupling Division
8145 Lewis Road • Minneapolis, MN 55427
www.parker.com/quickcouplings B-12
Hydraulic Quick Couplings
B
Hydraulics
General Purpose Couplings
SM Series
Features
The SM Series couplings feature:
• Poppet valves with captive valve seals: the valve seal is
positively captured by the metal poppet to minimize seal
washout.
• Coupler and nipple are precision machined from solid
barstock.
• SM Series are available in female pipe (NPTF), SAE
O-Ring Boss and British Pipe (BSPP) as standard.
Applications
SM Series couplings are used across the spectrum of
hydraulic applications. These Double Shut-Off couplings can
be found anywhere that fluid transfer lines need to be
connected and disconnected for operation or maintenance of
equipment, and a loss of fluid is undesirable. Designed for
use with commercial grades of hydraulic fluids. These
couplings are ideally suited for all mobile or industrial
applications.
Note: Protective dust plugs and caps play a crucial role in the
life of a quick coupling and no purchase of a hydraulic quick
coupling is complete without the selection of an appropriate
dust plug and cap. See pages noted in Table of Contents for
dust plugs and caps for the Parker full line of hydraulic
couplings.
Specifications
Body Size (in.) 1/4 1/2 3/4
Rated Pressure (PSI) 6,000 6,000 4,500
Rated Flow (GPM) 3 12 28
Temperature Range (Nitrile Seals) -40° to +250°F
Performance
SM Series (1/4")
Test Fluid: Oil - 200 SUS
0
5
10
15
20
25
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Flow in USGPM
Pressure Drop in PSID
1/4"
SM Series (1/2" & 3/4")
Test Fluid: Oil - 200 SUS
0
5
10
15
20
25
30
35
0 5 10 15 20 25 30 35 40
Flow in USGPM
Pressure Drop in PSID
1/2"
3/4"