DIRECTIONAL VALVES

PC10-30 Check, Pilot-to-Open

DESCRIPTION

A screw-in, cartridge-style, pilot-operated, hydraulic check valve for use in blocking

or load-holding circuits.

OPERATION

The PC10-30 allows flow passage from 2 to 3, while normally blocking flow from

3 to 2. Flow will be allowed from 3 to 2 when pressure is applied at 1.

The cartridge has a 4:1 pilot ratio, meaning that at least one-fourth of the load

pressure held at 3 is required at 1 to open the valve.

The check is spring-biased to assure holding in static or no-load conditions.

A sealed pilot piston option is available.

Note: Special higher bias spring values available. Consult factory.

FEATURES

• Hardened seat for long life and low leakage.

• Optional sealed piston.

• Optional spring ranges.

• Industry common cavity.

RATINGS

Operating Pressure: 241 bar (3500 psi)

Flow: See Performance Chart

Maximum Internal Leakage at 207 bar (3000 psi):

3 to 2: 0.10 ml/minute (2 drops/minute)

2 to 1 without sealed piston: 115 ml/minute (7 cu. in./minute)

2 to 1 with sealed piston: zero leakage

Pilot Ratio: 4:1

Check Bias Spring: 2.07 bar (30 psi);

With sealed piston option: 6.2 bar (90 psi) minimum

Temperature: -40 to 120°C (-40 to 248°F) 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

Cavity: VC10-3; See page 9.110.1

Cavity Tool: CT10-3XX; See page 8.600.1

Seal Kit: SK10-3X-TM (Buna N); SK10-3V-TM (Viton); SK10-3P-TM (Polyurethane)

See page 8.650.1

PERFORMANCE (Cartridge Only)

ISO SYMBOL

4.101.1

Pressure Drop vs. Flow

For cartridge only with 70 psi spring

3 to 2 —— (p); 2 to 3 - - - (r)

32 cSt/150 sus oil at 40°C

6.9/100

10.4/150

13.8/200

3.4/50

7.6

15.1

22.7

FLOW lpm/gpm

PRESSURE DROP bar/psi

30.2

HYDRAFORCE

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PC10-30

DIMENSIONS

4.101.2

HYDRAFORCE

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TO ORDER

MATERIALS

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

Seals

N Buna N (Std.)

NS Buna N with Sealed Piston:

6.2 bar (90 psi) minimum spring

V Fluorocarbon

VS Fluorocarbon with Sealed Piston:

6.2 bar (90 psi) minimum spring

P Polyurethane

PS Polyurethane with Sealed Piston:

6.2 bar (90 psi) minimum spring

Note: Other bias spring pressures available

for OEM applications. Consult factory.

PC10-30- __ __ __ - __ - __ __ __

Bias Spring

(Blank) 2.1 bar/30 psi (Std.)*

70 4.8 bar/70 psi

90 6.2 bar/90 psi

120 8.3 bar/120 psi

270 18.6 bar/270 psi

* PC10-30 valves built with standard 30 psi

spring are not stamped with spring rating.

Other spring ratings are stamped on valve.

Cartridge: Weight: 0.09 kg. (0.20 lbs.)

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and back-ups

standard.

Standard Ported Body: Weight:

0.36 kg. (0.80 lbs.) Anodized

high-strength aluminum alloy, rated

to 207 bar (3000 psi). Ductile iron

bodies available; dimensions may

differ. See page 8.010.1

Blue rectangles are links to other catalog pages.