21 100/117 ED

1/2

21 100/117 ED

DIRECT OPERATED

PRESSURE CONTROL VALVE

SERIES 22

PERFORMANCES (measured with mineral oil of viscosity 36 cSt at 50°C) HYDRAULIC SYMBOL

OPERATING PRINCIPLE

SEAT DIMENSIONS: D-10E

— The CR valve is a direct operated pressure control valve

cartridge type that can be used in blocks or panels with

type D-10B seat.

— It is normally used to control the maximum pressure in the

hydraulic circuits or as a limiting device for pressure peaks

generated during hydraulic actuator movement variation.

— It is available in ﬁve different pressure control ranges up to

350 bar.

— The circuit pressure acts on the shutter which is directly

loaded by a spring on the opposite side. Once the set

pressure is reached, the shutter opens, and discharges the

excess ﬂow in port T connected directly to the reservoir.

— The pressure can be adjusted by a screw, usually supplied

as the countersunk hex type, equipped with locking nut and

maximum adjustment limiter.

CARTRIDGE TYPE

p max

350 bar

Q max 50 l/min

Max working pressure bar 350

Minimum controlled pressure and pressure drop see diagram

Maximum ﬂow rate l/min 50

Ambient temperature range °C -20 / +60

Fluid temperature range °C -20 / +80

Fluid viscosity range cSt 10 ÷ 400

Fluid contamination degree

According to

ISO 4406:1999 class 20/18/15

Recommended viscosity cSt 25

Mass kg 0,16

Surface treatment: electrolytic zinc covering

Fe / Zn8 /B

ISO 2081

21 100/117 ED

2/2

SERIES 22

REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.

1 - IDENTIFICATION CODE

2 - CHARACTERISTIC CURVES (values obtained with viscosity of 36 cSt at 50°C)

4 - OVERALL AND MOUNTING DIMENSIONS

dimensions in mm

DJUSTMENT

INIMUM CONTROLLED PRESSURE

Seals:

N = NBR seals for mineral oils (standard)

V = FPM seals for special ﬂuids

Series No. (the overall and mounting

dimensions remain unchanged from 20 to 29)

Pressure adjustment range:

2 = up to 25 bar

3 = up to 70 bar

4 = up to 140 bar

5 = up to 210 bar

6 = up to 350 bar

Direct operated pressure

control valve

Cartridge type

K = Adjustment knob

(omit for adjustment with countersunk

hex screw - standard)

C R / 22 /

-T pressure drops

with screw set at

minimum pressure

ontrol

3 - HYDRAULIC FLUIDS

Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals (code N). For fluids HFDR type

(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical

department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.

The fluid must be preserved in its physical and chemical characteristics.

1 OR type 2056 (14.00x1.78)

90 Shore

2 OR type 3062 (15.54x2.62)

90 Shore

3 Hexagonal: spanner 22

Tightening torque 45 ÷ 50 Nm

4 Locking nut: spanner 19

5 Countersunk hex adjustment screw:

spanner 6 (standard)

Clockwise rotation to increase

pressure

6 Maximum screw stroke

7 Adjustment knob: K

8 Locking ring