E-15
Parker Hannifin Corporation
Quick Coupling Division
Minneapolis, MN
www.parker.com/quickcouplings
E
Valves
Check Valves
S6C & 3C Series
Soft Seat
S6C and 3C Soft Seat Check Valves span a wide
variety of sizes and end configurations.
S6C and 3C check valves have a variety of options enabling
them to meet the needs of most systems. The soft seated
poppet creates a leak free seal to protect hydraulic systems
from reverse flow.
S6C check valves are stainless steel with a rated pressure of
6000
psi (sizes 1/4”, 3/8”, 1/2”, 3/4” & 1”). 3C check valves are
steel with a rated pressure of 3000 psi (sizes1-1/4”, 1-1/2” & 2”).
These in-line unidirectional valves are available in sizes 1/4”
to 2”. Standard spring crack pressures are shown in the part
number table. Other crack pressures available upon request.
Features
1.
Fluorocarbon poppet seal is standard.
2.
Steel or stainless steel construction
3.
Optional crack pressures available on request
4.
Contact QCD for other materials or configurations
Specifications
Size (in)
Rated Flow (gpm)
1/4
3
3/8
8
1/2
12
3/4
20
1
30
1-1/4
90
1-1/2
125
2
175
Seal Options
(
add code to part number)
Code
Poppet Seal Material
suffix
A
Nitrile
suffix
E
Ethylene Propylene
500
400
300
200
100
50
40
30
20
10
10
20
30
40
50
100
200
500
.69
1.38
2.07
2.76
3.45
6.90
13.79
20.69
27.59
34.48
1892.50
757.00
378.50
189.25
151.40
113.55
75.70
37.85
2"
1-1/4"
1-1/2"
Flow Rate (l/min)
Hydraulic Oil @ 38°C, Fully Open
Pressure Drop (psi)
Pressure Drop (bar)
Flow Rate (GPM)
Hydraulic Oil @ 100°C, Fully Open
Flow Rate (l/min)
Hydraulic Oil @ 38°C, Fully Open
Pressure Drop (psi)
Pressure Drop (bar)
100
30
20
10
5.0
4.0
3.0
2.0
1.0
.5
.4
.3
.2
.1
.1
.2
.3
.4
.5
1.0
2.0
3.0
4.0
5.0
10
20
30
100
.007
.014
.021
.028
.034
.07
.14
.21
.28
.35
.69
1.38
2.07
2.76
3.45
6.90
378.50
113.55
75.70
37.85
18.93
15.14
11.36
7.57
3.79
1.89
1.51
1.36
.76
.38
1/4"
3/8"
1/2"
3/4"
1"
Flow Rate (GPM)
Hydraulic Oil @ 100°C, Fully Open