DIRECTIONAL VALVES
PCV10 Check, Pilot-to-Open
DESCRIPTION
An in-line-housed, pilot-operated, hydraulic check valve for use in blocking or
load-holding circuits.
OPERATION
The PCV10 allows fl ow from B to A, while normally blocking fl ow from A to B.
Flow will be allowed from A to B when pressure is applied at X.
The check valve has a 4:1 pilot ratio, meaning that at least one-fourth of the load
pressure held at A is required at X to open the valve.
The check is spring-biased at 2 bar (30 psi) to assure holding in static or no-load
conditions. A sealed pilot piston option with check spring bias of 6.9 bar (100 psi)
is available.
FEATURES
• Hardened seat for long life and low leakage.
• Optional sealed pilot piston.
• Optional spring ranges.
• Check section is serviceable as a cartridge.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: See Performance Chart
Internal Leakage:
A to B: 0.25 cc/minute (5 drops/minute) max. at 240 bar (3500 psi);
B to X (without sealed piston): 245 cc/minute (15 cu. in./minute) max. at
240 bar (3500 psi)
Pilot Ratio: 4:1
Temperature: -40 to 120°C with standard Buna 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
Check Spring Bias: 2 bar (30 psi); with sealed piston option, 6.9 bar (100 psi)
Seal Kit (for CV10-20): SK10-2X-T; See page 8.650.1;
Piston Seal: See Dimension Drawing
Pilot Piston Service Part Numbers:
O-Ring (1): Buna 6001014; Fluorocarbon 6003014
Back-ups (2): Buna 6011014; Fluorocarbon 6011014
USASI: ISO:
PERFORMANCE (Cartridge Only)
SYMBOLS
4.151.1
8.6/125
6.9/100
5.2/75
3.4/50
1.7/25
18.9
5
37.9
10
56.8
15
FLOW lpm/gpm
PRESSURE DROP bar/psi
A to B — (p); B to A - - - (r)
with 2.1 bar (30 psi) spring
32 cSt/150 ssu oil at 40°C
75.8
20
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PCV10
DIMENSIONS
4.151.2
Cartridge (CV10-20): Weight: 0.08 kg.
(0.17 lbs.) Steel with hardened work
surfaces. Zinc-plated exposed
surfaces. Buna N O-rings and
poly-ester elastomer back-ups
standard.
Pilot Piston: Hardened steel.
Standard Ported Body: Anodized
high-strength 6061 T6 aluminum al-
loy, rated to 207 bar (3000 psi). Duc-
tile iron bodies available; dimensions
may differ; consult factory.
Product Weight: 0.5 kg. (1.10 lbs.).
PCV10 - __ __ __ - __ - __ - __ __ __
MATERIALS
TO ORDER
Seals
N Buna N (Std.)
NS Buna N w/Sealed Pilot Piston
(100 psi spring minimum
required)
V Fluorocarbon
VS Fluorocarbon with Sealed Pilot
Piston (100 psi spring minimum
required)
Porting
SAE 6; SAE 6 Pilot 6T
SAE 8; SAE 6 Pilot 8T
Options
(Blank) None
1 Thermal Relief on C1
Bias Spring
(Blank) 2.1 bar (30 psi) (Std.)*
40 2.8 bar (40 psi)
100 6.9 bar (100 psi)
200 13.8 bar (200 psi)
300 20.7 bar (300 psi)
* PCV10 valves built with standard
30 psi spring are not stamped with
spring rating. Other spring ratings
are stamped on valve.
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