DIRECTIONAL VALVES

PD16-S61N Piloted 4-Way Spool

DESCRIPTION

A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve.

OPERATION

When in neutral the PD16-S61N allows ﬂ ow between ports ➁ and ➂, and between

ports

➃ and ➄. On remote pilot signal at ➀, the valve’s spool shifts to allow ﬂ ow

between

➂ and ➃ while blocking ➁ and ➄. The spring chamber is vented to the tank

through port

➅. The vented spring chamber allows the valve to be fully pressurized at

ports

➀, ➁, ➂, ➃ and ➄ without affecting required pilot pressure. Pressure at port ➅

will affect required pilot pressure.

FEATURES

• Hardened spool and cage for long life.

• 60, 110 and 170 psi bias springs available.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Flow: 0–151 lpm (0–40 gpm); See Performance Chart

Maximum Internal Leakage: at 207 bar (3000 psi): 164 ml/minute (10 cu. in./minute)

Pilot Pressure Required: 4.1 bar (60 psi) mimimum

Oil Volume Required to Full Shift: 1.5 cc (0.09 cu. in.)

Temperature: -40 to 120°C

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: VC16-S6; See page 9.116.1

Cavity Tool: CT16-S6XX; See page 8.600.1

Seal Kit: SK16-S6X-BMMMM; See page 8.650.1

USASI:

ISO:

SYMBOLS

PERFORMANCE

(Cartridge Only)

4.393.1

13.8/200

15.5/225

12.1/175

10.3/150

8.6/125

6.9/100

5.2/75

3.4/50

1.7/25

37.9

75.8

113.6

151.4

FLOW lpm/gpm

PRESSURE DROP bar/psi

- - - - ➁ to ➂

—— ➂ to ➃

– – – ➃ to ➄

32 cSt/150 ssu oil at 40°C

HYDRAFORCE

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Blue rectangles are links to other catalog pages.

Cartridge: Weight: 0.25 kg. (0.55 lbs.)

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and polyester

elastomer back-ups standard.

Ported Body: Consult factory.

DIMENSIONS

MATERIALS TO ORDER

PD16-S61N

4.393.2

PD16-S61N - __ __ __ - __ - __ __ __

Porting

Cartridge Only 0

Bias Spring

†

60 4.1 bar (60 psi)

110 7.6 bar (110 psi)

170 11.7 bar (170 psi)

Optional bias springs considered

on OEM request.

†

Note: 110 psi bias spring is the

minimum required for use with

sealed spool.

5.19

131.8

2.03

51.6

INCH

MILLIMETRE

1.50

38.1

ACROSS FLATS

TORQUE:

50 ft-lbs (67.7 Nm)

max.

Seals

N Buna N (Std.)

V Fluorocarbon

NS Buna N w/Sealed Spool

➀ to ➁ only

VS Fluorocarbon w/Sealed Spool

➀ to ➁ only

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