DIRECTIONAL VALVES

PCV16 Check, Pilot-to-Open

DESCRIPTION

An in-line-housed, pilot-operated, hydraulic check valve for use in blocking or load-

holding circuits.

OPERATION

The PCV16 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 3.8:1 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 1.7 bar (25 psi) to assure holding in static or no-load

conditions. A sealed pilot piston option 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: 3.8:1

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

Seal Kit (for CV16-20): SK16-2X-T; See page 8.650.1;

Piston Seals:

O-Ring (1) Back-Ups (2)

Buna 6001119 6010119

Fluorocarbon 6003119 6010119

USASI: ISO:

PERFORMANCE (Cartridge Only)

SYMBOLS

4.153.1

8.6/125

6.9/100

5.2/75

3.4/50

1.7/25

37.9

75.8

113.6

FLOW lpm/gpm

PRESSURE DROP bar/psi

A to B — (p); B to A - - - (r)

with 1.7 bar (25 psi) spring

32 cSt/150 ssu oil at 40°C

151.4

HYDRAFORCE

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Cartridge (CV16-20): Weight: 0.29 kg.

(0.63 lbs.) Steel with hardened work

surfaces. Zinc-plated exposed

surfaces. Buna N O-rings and

polyester elastomer back-ups

standard.

Pilot Piston: Hardened steel.

Standard Ported Body: Anodized

high-strength 6061 T6 aluminum

alloy, rated to 207 bar (3000 psi).

Ductile iron bodies available;

dimensions may differ.

Consult factory.

PCV16

DIMENSIONS

MATERIALS

TO ORDER

Seals

N Buna N (Std.)

NS Buna N with Sealed Pilot Piston

(60 psi spring minimum required)

V Fluorocarbon

VS Fluorocarbon with Sealed Pilot Piston

(60 psi spring minimum required)

Porting

SAE 12

w/ SAE 6 Pilot 12T

4.153.2

PCV16 - __ __ __ - __ - __ __ __

Bias Spring

(Blank) 1.7 bar (25 psi) (Std.)*

60 4.1 bar (60 psi)

100 6.9 bar (100 psi)

* PCV16 valves built with standard 25 psi

spring are not stamped with spring rating.

Other spring ratings are stamped on valve.

HYDRAFORCE

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Blue rectangles are links to other catalog pages.