EATON Vickers Screw-In Cartridge Valves V-VLOV-MC001-E4 September, 2007G-34
Description
The SPC1-20 is an inline
housing type, pilot-to-open
check valve.
SPC1-20
Single pilot check valve
Operation
This valve allows flow from
the valve port to the cylin-
der port when the spring
bias is overcome.
Flow is blocked from the
cylinder port to the valve
port until sufficient pilot
pressure is applied at the
pilot port.
RATINGS AND SPECIFICATIONS
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49˚C (120˚F)
Typical application pressure (all ports) 210 bar (3000 psi)
Rated flow 227 L/min (60 USgpm)
Free flow cracking pressure @ 1 L/min (0.25 USgpm) 1,03 bar (15 psi)
Internal leakage cylinder port to valve port 5 drops / min. maximum
@ 210 bar (3000 psi)
Temperature range –40˚ to 120˚C (–40˚ to 248˚F)
Pilot ratio 4:1
Fluids All general purpose hydraulic fluids such as:
MIL–H–5606, SAE 10, SAE 20, etc.
Filtration Cleanliness code 18/16/13
Standard housing materials Aluminum
Weight 3,17 kg (6.98 lb)
Seal kit (Check valve) 889615 Buna–N
889619 Viton
®
Seal kit (Pilot piston) 889656 Buna–N
02-173599 Viton
®
Viton is a registered trademark of E.I.DuPont
Cyl.
Valve
Pilot
Pilot
Valve
Cyl
10 20 300
50
100
150
200
40
14
10
4
2
6
8
12
40 80 120 160
50 60
Flow - L/min (21,8 cSt oil @ 49°C)
Flow - USgpm (105 SUS oil @ 120°F)
Pressure Drop - psi
Pressure Drop - bar
A
B
200 240
Functional Symbol
Sectional View
Pressure Drop Curves
Cartridge only
A – “Valve” to “Cyl” port
(Free Flow)
B – “Cyl” to “Valve” port
(Piloted Flow)
WARNING
Do not use Single
pilot check valves
in load holding
applications where either
overrunning loads are
possible; or, load release
speed is critical. Failure to
observe these guidelines
may result in bodily injury or
damage to equipment.
Pilot Pressure calculation
Nominal pressure to open valve by remote control
Pilot pressure at Pilot port =
Cracking pressure + Pressure at Cyl port
4
+ (0.75 x Pressure at Valve port)
EATON Vickers Screw-In Cartridge Valves V-VLOV-MC001-E4 September, 2007 G-35
G
Model Code
6,3 (0.24)
101,6
(4,00)
12,7 (0.5)
63,5
(2.50)
31,8 (1.25)
111,1 (4.38)
152,4 (6.00)
114,3
(4.50)
73.0
(2.88)
13,5 (0.53) 2 plcs.
57, 1
(2.25)
Pilot
Valve
116,3
(4.6)
CV2-20(V)-P-O-15
Cylinder
31,8 (1.25)
Dimensions
mm (inch)
Torque cartridge in housing
128-155 Nm (95-115 ft. lbs)
Function
SPC1 – Single pilot check
valve
Size
20 – 20 Size
Piston Seals
Blank – No seals
S – With seals
Seals
Blank – Buna-N
V – Viton
®
Seating type
P – Poppet
Port size
8B – 1” BSPP (Light duty)
16T – SAE 16 (Light duty)
20T – SAE 20 (Light duty)
Special Features
0000
– None
(
Only required if valve has
special features - omitted
if “00”)
1
2
3
4
5
6 7
SPC1 – 20 (S) (V) – P – *** – 00
1
2 3 4 5
6 7
HOUSING ALL PART
PORT SIZE PORTS NUMBER
8B 1” BSPP 02–178261
16T SAE 16 889161
20T SAE 20 889162
SPC1-20
