DIRECTIONAL VALVES
PC10-38 Check, Pilot-Operated with Integrated
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, hydraulic check valve for use in blocking
or load-holding circuits. Pilot ratio is 3:1. The cartridge incorporates a low flow thermal
relief valve intended to prevent cylinder damage resulting from temperature-induced
pressure intensification.
Note: The thermal relief feature is not intended for use in dynamic pressure-limiting
applciations.
OPERATION
The PC10-38 allows flow from ports 2 to 3, while blocking flow in the opposite direc-
tion. If the presure at port 3 exceeds the thermal relief setting, a small amount of oil
will be allowed to pass from port 3 to port 2, preventing cylinder damage from pres-
sure intensification.
FEATURES
• Integrated low flow thermal relief valve.
• Optional sealed piston.
• Hardened seat for long life and low leakage.
• Industry common cavity.
RATINGS
Operating Pressure: 241 bar (3500 psi)
Proof Pressure: 390 bar (5700 psi)
Flow Rating: 45 lpm (12 gpm)
Maximum Internal Leakage: 0.25 ml/minute (5 drops/minute) at 241 bar (3500 psi)
Pilot Ratio: 3:1
Temperature: -40 to 100°C (-40 to 212°F) with standard Buna seals;
-26 to 204°C (-15 to 400°F) with Viton seals;
-54 to 107°C (-65 to 225°F) with Polyurethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC10-3; See page 9.110.1
Cavity Tool: CT10-3XX; See page 8.600.1
Seal Kit: SK10-3X-TM; See page 8.650.1
PERFORMANCE (Cartridge Only)
ISO SYMBOL
4.120.1
13.8/200
20.7/300
27.6/400
6.9/100
7.5
2
15.1
4
22.7
6
FLOW lpm/gpm
PRESSURE DROP bar/psi
30.2
8
37.9
10
Pressure Drop vs. Flow
Port 2 to 3 Port 3 to 2
32 cSt oil at 40°C (104°F)
45.4
12
HYDRAFORCE
.com
®
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.14 kg.
(0.3 lbs.) Steel with hardened
work surfaces. Zinc-plated
exposed surfaces. Buna N
O-rings and polyester
elastomer back-ups standard.
Standard Ported Body:
Weight: 0.36 kg. (0.80 lbs.)
Anodized high-strength 6061
T6 aluminum alloy, rated to
207 bar (3000 psi). Ductile iron
bodies available; dimensions
may differ. See page 8.010.1
PC10-38
DIMENSIONS
MATERIALS TO ORDER
PC10-38
- __ __ __ - __ - __ __ __ - __ __
Porting
Cartridge Only 0
SAE 6 6T
SAE 8 8T
1/4 in. BSP* 2B
3/8 in. BSP* 3B
*BSP Body;
U.K. Mfr. Only
4.120.2
0.80
20.3
1.84
46.8
TORQUE -
24 – 26 ft-lbs
(32.6 – 35.4 Nm)
Seals
N Buna N (Std.)
NS* Buna N with Sealed Piston
V Fluorocarbon
VS* Fluorocarbon with Sealed Piston
P Polyurethane
PS* Polyurethane with Sealed Piston
Note: NS, VS and PS seal options require
6.9 bar (100 psi) spring minimum.
®
HYDRAFORCE
HYDRAFORCE
.com
®
Bias Spring
100 6.9 bar/100 psi
Thermal Relief
Thermal Relief Setting
05 34.5 to 48.3 bar
(500 to 700 psi)
11 69.0 to 93.1 bar
(1000 to 1350 psi)
20 137.9 to 172.4 bar
(2000 to 2500 psi)
25 172.4 to 217.2 bar
(2500 to 3150 psi)
30 206.9 to 262.1 bar
(3000 to 3800 psi)
40 275.9 to 344.8 bar
(4000 to 5000 psi)
45 310.3 to 386.2 bar
(4500 to 5600 psi)
Blue rectangles are links to other catalog pages.
