Revised 10/99

558

Proportional Flow Controls

Valvistor

EPV16 Series

Vickers

Proportional Valves

EVickers, Incorporated, 1998

Features and Benefits

The EPV (Electro Proportional Valve)

series of poppet valves using the

ValvistorR poppet provides:

– High dynamic response on the main

poppet valve to discrete pilot valve

commands.

– Acts as a free flow check valve with

good anti-cavitation characteristics

when flow is reversed.

The Valvistor poppet and its pilot stage

are packaged into one industry standard

compact screw-in cartridge valve. The

valve has the benefit of flow force

pressure compensation, the performance

of which is application dependent. Refer to

the pressure compensation curve. If

pressure compensation is critical, we

recommend the use of a separate

hydrostat in line with the EPV valve.

Application opportunities abound in the

process control, paving, AWP, industrial

truck, crane, retrieval systems,conveyor

systems and agricultural machinery

markets; as well as on any other

equipment in the mobile vehicle and

industrial machinery markets where

precise control of velocity or position is

desirable.

The EPV16 is also available for industrial

applications mounted in a body with a

CETOP 5 (NFPA D05) interface. This

option has proven to be successfully

competitive in the plastic injection molding

machine market.

A major design feature of the EPV16

series valve is that a separate pilot flow

supply is not required and all flow used

for the pilot function is returned to the

valve outlet. This eliminates the need for

a separate hydraulic pilot supply circuit.

In addition, the EPV series valves offer

the following features and benefits.

Features Benefits

D Very fast response Provides the operator with high dynamic acceleration/velocity/deceleration

profiles for demanding performance requirements such as:

D Lift/lower position control

D Rotary actuator dynamic control

D Profile control

D Repeatability Provides repeatable and accurate actuator velocity to a given operator

command input.

D Low hysteresis Typical hysteresis is less than 4% of rated current at 10 bar pressure drop.

Accurate position control demonstrated on a new line of industrial presses.

D Integral feedback Internal hydraulic feedback provides effective, low cost,

flow force pressure compensated proportional control of valve flow.

D Unequalled simplicity Eliminates need for inner feedback loop and associated electronics.

D Electrical operation The valve accepts a PWM signal, or a direct current signal.

D Optional nose-in, side-out or side-in,

nose-out flow direction

Provides system design options and flexibility.

D Free flow in the reverse direction Provides a check valve function with good anti-cavitation characteristics.

D Cost effective design Provides the multiple functions of pressure compensation, flow control

and reverse free flow check valve.

Table of Contents

Features and Benefits

Model Code 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Application Data 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Features

Side-in, nose-out operation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stand alone valve bodies 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manual override 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Curves

Typical pressure compensation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Typical metering performance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Step response 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Dimensions

EPV16-A Nose-in, side-out 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EPV16-B Side-in, nose-out 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EPV16-A-**-S-5C-**D-(*)-*-12 CETOP 5 Interface 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EPV16-B-**-S-5C-**D-(*)-*-12 CETOP 5 Interface 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Body/Form Tools/Service Kits

Modified C-16-3S body 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard form tooling for C-**-3S cavities 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coil kits 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal kits 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard Cavity Dimensions 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-Way Short Cavity 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model Code

Electro Proportional Valve

Nominal size

16 – Size 16

Valve housing material

(Omit for cartridge only)

S – Steel/iron

A – Aluminum

210 bar (3000 psi) maximum

Port sizes

Voltage rating

12D – 12 VDC

24D – 24 VDC

(Omit when ordering cartridge only)

10H – SAE 10 Ports

12H – SAE 12 Ports

4G – BSPF – G 1/2” Ports

6G – BSPF – G 3/4” Ports

5C – CETOP5 (NFPA D05) interface

(Requires steel/cast iron body)

Manual override option

M – Pin type

S – Screw type

Omit if not required

Rated flow @ 10 bar P

04 – 40 L/min (10.5 USgpm)

06 – 60 L/min (16 USgpm)

10 – 100 L/min (26 USgpm)

16 – 160 L/min (42 USgpm)

Flow direction

A – Nose–in, side–out

B – Side–in, nose–out

W – Flying leads

Q – Dual SAE 1/4” Spade

U – DIN 43650

Y – Metri–Pack

(Preferred Packard connector)

F – Weather–Pack

Electrical connections

Design number

2 3 4 5 6 7 8 9 10

Control

The EPV (Electro Proportional Valve) can

be driven by a 12 VDC, 24 VDC or PWM

signal. Control of the EPV16 can be as

simple as a rheostat for hand-eye

coordination systems to the convenience

of a power plug or with the sophistication

of an amplifier card. Smooth performance

has also been achieved through the use

of joy stick controllers with and without

amplifier cards.

The preferred and recommended method

of control of the EPV16 is with a PWM

controller with the following characteristics:

Nominal supply voltage:

12 / 24 VDC

Minimum current for full function: 1.4 / 0.7 amp

Pulse frequency: 100 + / – 10 Hz

Coil resistance: 6.4 / 25.5 ohms @20_C (68_F)

Threshold current: Adj. from 400 - 800 mamp (12 VDC)

Adj. from 200 - 400 mamp (24 VDC)

Adj. from 600 -1400 mamp (12 VDC)

Adj. from 300 to 700 mamp (24 VDC)

Ramp: Optional

Rheostat specifications:

Rheostat

s ecifications:

CAUTION

12 VDC operation – 10-12 , 20-25 watts

C UTION

These have a tendency to run hot if used

iththit ittt ti

VDC

o eration

10 12



20 25

watts

24 VDC operation – 25-30 , 20-25 watts

in other than intermittent operations.

VDC

oertion

25 30

,

20 25

w tts

Power plug options:

(Indoor applications)

EHH-AMP-702

EPAD-SA-1A6-10

(Indoor

lic tions)

EP D 1 6 10

(These require 24 VDC power supply to power plug and

12 VDC coil on EPV16)

Amplifier card:

(Indoor applications)

EEA-PAM-523

(Requires 24 VDC power supply and either 12 VDC or

24VDC coil on EPV16)

Joy stick s

liers:

OEM Controls Inc

helton CT

oy s

supp

ers:

(O tdoor

lic tions)

OEM

nc,

on,

Ph: 203 929 8431 F x: 203 929 3867

(Outdoor applications) Ph: 203-929-8431 Fax: 203-929-3867

Q Controls Inc Bristol CT

nc.,

Ph: 203 583 6994 F x: 203 583 6011

Ph: 203-583-6994 Fax: 203-583-6011

Fluids

Proper fluid condition is essential for long

and satisfactory life of hydraulic

components and systems. Hydraulic fluid

must have the correct balance of

cleanliness, materials and additives for

protection against wear of components,

elevated viscosity and inclusion of air.

Essential information on the correct

methods for treating hydraulic fluid is

included in Vickers publication 561,

“Vickers Guide to Systemic

Contamination Control,” available from

your local Vickers distributor or by

contacting Vickers, Incorporated.

Recommendations on filtration and the

selection of products to control fluid

condition are included in 561.

Recommended cleanliness levels using

petroleum oil under common conditions

is based on the highest fluid pressure

levels in the system:

Fluids other than petroleum, severe

service cycles or temperature extremes

are cause for adjustment of these

cleanliness codes. See Vickers

Publication 561 for exact details.

System Pressure Level bar (psi)

Product 70-210

(1000–3000)

210+

(3000+)

Proportional

Valves

17/15/12 15/13/11

Application Data

Ratings

Flow range 0-160 lpm (0-42 USgpm)

Rated pressure 280 bar (4000 psi) NFPA rated

Operating ambient temperature –30_ + 90_C (-22_ to +194_ F)

Typical hysteresis Less than 4% of rated current at 10 bar pressure

drop – Pulse Width Modulated (PWM)

Leakage at P of 140 bar (2000 psi) and oil

viscosity of 30cSt

EPV16-A 50 cc/min maximum

EPV16-B 10 cc/min maximum

Oil viscosity range 10–800 cSt

Fluids Antiware hydraulic oils with Buna–N seals (standard).

Phosphate esters (non–alkyl) with Viton seals are

available by request.

VitonR is a registered trademark of E.I. DuPont

Electrical requirements

Coil current for maximum flow

1.4 amps max @ 12 VDC

0.7 amps max @ 24 VDC

Recommended PWM frequency 65–150 Hz, application dependent, 100 Hz typical

Coil resistance @ 20_C 12V 6.5 

24V 25.0 

Power consumption @ rated current and

20_C coil temperature

12 volts 12.8 watts

24 volts 12.8 watts

Electrical connections Refer to model code for options

Manual override Refer to model code for options

Installation interface Modified C-16-3S

Weight (cartridge only) 1 kg (2.2 lbs.)

WARNING: Application of

these products beyond

published performance

specifications may cause valve

malfunction which may result in

personal injury and/or damage to

the machine.

Operation

Description

The EPV (Electro Proportional Valve) is

a series of poppet valves using a unique

pilot operated technology controlled by

either 12/24 VDC or a PWM signal

packaged in an industry standard

screw-in cartridge valve configuration. It

provides flow force pressure

compensated flow control for a broad

range of velocity or position control

requirements in both the mobile vehicle

and industrial machinery markets. It can

be applied in hydraulic systems either as

a stand alone valve or in conjunction

with other valves in a manifold or block.

A characteristic feature of the EPV valve

is the concept of using pilot flow to control

the position of the main stage poppet

valve. The main poppet amplifies a small

flow through the pilot circuit comparable to

a transistor. Thus the name Valvistor,

derived from the combination of “valve”

and “transistor”. As commanded by pilot

flow, the unique closed loop internal

position feedback system regulates inlet

flow proportional to opening displacement.

This provides servo-like precision position

control of the main poppet without the

need for an expensive LVDT and

associated electronics.

The EPV construction and features open

up a broad range of applications and uses

for the valve with hydraulic cylinders and

motors in the lift truck, forestry, agricultural

equipment, paving, AWP, conveyor

systems and process industries.

The EPV16 series of screw-in cartridge

valves are designed to fit into the 3-way

short cavity. This is an industry accepted

standard and tooling for either aluminum

or steel bodies is readily available.

The installation dimensions section of this

catalog provides dimensional details for

the undercut version of the C-16-3S cavity

we recommend for the EPV16 series

valves. Information is also included for

form tooling for the machining of these

cavities and dimensions for stand alone

valve bodies.

EPV16 series valves are available as

either loose cartridge valves or

assembled in either aluminum or steel

stand alone valve bodies. Refer to

model code when ordering loose valves

or stand alone valve bodies. When

ordered in a stand alone body, the Port 2

annulus is undercut to ensure maximum

performance in extreme operating

conditions at full rated flow. Internal

feedback flow passages for either the

EPV16-A or the EPV16-B flow directions

are provided for in these bodies, which

do not have the third port as normally

contained in the standard C-16-3S body.

Installation dimensions for these

modified bodies are shown in section

Body/Form Tools/Service Kits. These

modified bodies are recommended for

all stand alone valve applications.

When the standard C-16-3S stand alone

bodies are used, the following

guidelines apply:

EPV16-A: Port 3 is to be plugged.

EPV16-B: Port 3 is to be connected to

Port 1 in order to provide the

required hydraulic feedback

flow path.

CAUTION

A separate check valve is required down

stream to isolate the EPV valve from

load forces when the EPV is used to

hold a load.

Figure 1. Basic layout and block diagram of the valve.

INLET

OUTLET

INLET

The EPV proportionally controlled

two–way valve is of the poppet type and

is well suited for screw–in cartridge

design (see Figures 1 and 2). The main

poppet amplifies a small flow through

the pilot circuit and is comparable to a

transistor. As the transistor uses small

currents to control larger currents, the

hydraulic valve transistor or VALVISTOR

uses the pilot flow to control the main

stage flow with servo–like response.

Hydraulic position feedback is

obtained by providing the poppet with

a longitudinal slot (5) in its cylindrical

surface. This slot, together with a

metering edge inside the sleeve, forms

a variable orifice between the inlet of

the valve and the volume above the

main poppet (3). When the valve is

closed and the main poppet is sealed,

the variable orifice area is also closed.

As the main poppet opens, the variable

orifice area increases. The slot is a

part of one leg of a hydraulic bridge

circuit and provides an internal

position feedback. A pilot valve (4) is

connected between the volume (3) and

the valve outlet (2).

Assume the pilot valve is closed and

there is no pilot flow through the slot in

the piston. The pressure above the

main poppet, in volume (3) is equal to

the pressure of the inlet (1) of the valve.

This is due to a slight leakage in the

variable orifice. Since the area of the

poppet facing the volume (3) is larger than

the area facing the inlet (1), the poppet is

held to the seat (6) by a force which is

proportional to the pressure difference

between inlet (1) and outlet (2).

Opening the pilot valve (4) lowers the

pressure in the upper volume (3). This

moves the main poppet upwards and

opens the slot, forming the variable

orifice (See figure 2.). This causes a

flow through the pilot circuit. Initially,

the flow through the pilot valve equals

the flow through the slot plus the flow

resulting from the opening movement

of the main poppet.

The main poppet will move upwards as

long as the flow through the slot is less

than the flow through the pilot valve.

Because of the metering area of the

slot, the variable orifice increases as

the main poppet opens, and the flow

through the slot increases. The

movement of the main poppet stops

when the flow through the slot is

equal to the flow through the pilot

valve. The main poppet is now in a

steady state position.

If the flow through the pilot valve

decreases (by closing the pilot valve)

the main poppet will move downward

and close off the slot until a new

balanced position has been obtained.

Thus, by controlling the flow through the

pilot valve, we can continuously control

the position of the main poppet from a

closed to a fully open position. In this

manner, very simple servo control of the

main poppet has been obtained.

By opening the main poppet, with its

much larger flow area, we can control

the much larger main flow across the

valve with a relatively small pilot flow.

Notably, the pilot flow is added to the

main flow in the outlet of the valve.

Therefore, the valve will not use any

flow for its control function and is

energy efficient.

If the outlet pressure is larger than

the inlet pressure, and if the pilot is

closed; the main poppet will act as a

check valve and reverse flow will

take place.

WARNING: Ensure screw

override is in the neutral

position prior to activating

this valve.

Figure 2. EPV with pilot valve open.

INLET

OUTLET

Optional Features

Side-in, nose-out operation

An option to the standard valve

configuration is for the direction of the

primary flow to be reversed through the

valve for side-in, nose-out operation.

This is accomplished by a change to the

poppet valve and screw-in valve body

(see Figure 3). This requires the use of

an additional construction hole in the

manifold or block in which the screw-in

cartridge is installed; or, alternately,

external plumbing to connect the pilot

flow feedback loop to the valve outlet.

Stand alone 2 ported valve bodies

are available as the recommended

alternative to the 3 ported C-16-3S

bodies. The 2 ported bodies incorporate

both the undercut in Port 2 annulus for

full rated flow operation and the internal

hydraulic feedback required for the

EPV16-B. If the 3 ported stand alone

body is used, external plumbing is

required to connect Port 3 to Port 1. This

is necessary to provide the internal

hydraulic feedback loop the the Valvistor

main stage poppet. Also, problems may

be encountered in obtaining full rated

flow through the valve.

Stand alone valve bodies

The EPV valves are available either as

loose cartridge valves or installed in

industry standard, stand alone 3-way

short valve bodies. These bodies are

standard production items and available

in either aluminum for up to 210 bar

(3000 psi) operation or in steel for up to

280 bar (4000 psi). Refer to Installation

Dimensions section of this bulletin.

Manual override

Manual override is available in two

different configurations, either push pin

type or screw pin type. The push pin

type is used when system pressure

does not exceed 210 bar (3000 psi).

The screw pin type can be used at any

system pressure

WARNING: When using

the “Screw Type” override,

care must be taken to

return the override

back to its neutral position before

activating the valve. Failure to take

this precaution may result in personal

injury or damage to the machine.

S – Screw type manual

override option

M – Pin type manual

override option

Schematic of side-in nose-out EPV16-B.

Figure 3. Sectional view of side-in

nose-out EPV16-B valve.

For EPV16-B (flow 2 to 1), Port 3 must

be connected to Port 1 externally to the

cartridge, either by passages in the

cavity block or external plumbing. When

purchased with undercut body, this

connection is included in the body and

Port 3 is not machined. A separate

external port connection is not required

for EPV16-A (flow 1 to 2).

Performance Curves

GHI

140

120

100

Typical pressure compensation

Typical metering performance

psid

FLOW %

bar

280

260

240

220

200

180

160

140

120

100

500

1000

1500

2000

2500

3000

3500

4000

PRESSURE DIFFERENTIAL

140

120

100

FLOW %

100 200

(24V) 300 400 500 600 700

200

800 1000 1200 1400(12V) 400 600

COMMAND CURRENT, mA

UPPER TOLERANCE OF FLOW

NOMINAL FLOW (LOWER TOLERANCE)

Pressure Differential

A –

B –

C –

D –

E –

10 bar

20 bar

50 bar

100 bar

200 bar

145 psi

290 psi

725 psi

1450 psi

2900 psi

Command Current

12V 24V

A –

B –

C –

D –

E –

F –

G –

H –

I –

600 mA

700 mA

800 mA

900 mA

1000 mA

1100 mA

1200 mA

1300 mA

1400 mA

300 mA

350 mA

400 mA

450 mA

500 mA

550 mA

600 mA

650 mA

700 mA

Step response definition of terms

COMMAND SIGNAL

100%

Pressure

drop P

On Stroke Off Stroke

Delay Reach

90%

Delay Reach

90%

20 bar

(300 psi)

100 bar

(1500 psi)

24 ms

35 ms

17 ms

5 ms

15 ms

7 ms

100%

10%

Off stroke valve

response time

On stroke

valve

response time

90% Reach

time

Delay

90%

Delay

TIME

90% Reach time

FLOW RESPONSE

Pressure Drop @120 l/min (30 USgpm)

150

*Flow interims of % for each poppet size

150

Installation Dimensions

EPV16-A

(No manual actuator)

EPV16-A

(With manual actuator)

Screw type

actuator (shown)

3 mm hex socket

EPV16-A Nose-in, side-out

EPV16-B

(No manual actuator)

EPV16-B

(With manual actuator)

“1” Port

“2” Port

“3” Port

181,0

(7.12)

∅43,5

(∅1.71)

Required external

connection with

standard

C–16–3S cavity

EPV16-B Side-in, nose-out

Electrical connection

DIN 43650 (Coil can be

rotated about core tube axis to

desired orientation)

27,3

(1.07)

124,7

(4.90)

67,9

(2.67)

181,0

(7.12)

124,7

(4.90)

67,9

(2.67)

“1” Port

“2” Port

185,3

(7.29)

129,0

(5.07)

38,1 Hex (1.50)

185,3

(7.29)

129,0

(5.07)

∅43,5

(∅1.71)

Electrical connection

DIN 43650 (Coil can be rotated

about core tube axis to desired

orientation)

Third angle

projection

Screw type

actuator (shown)

3 mm hex socket

27,3

(1.07)

mm (inch)

∅25.40 (1.00)

1.312-12 thd.

∅25.40 (1.00)

∅28.58 (1.125)

EPV16-A-**-S-5C-**D-(*)-*-12 CETOP 5 Interface

219,7 (8.65)

99,5 (3.92)

Third angle

projection

mm (inch)

22,8 (.89)

11,7 (.46)

 6.96 / 6.85 thru 4 holes

276,0 (10.9) Required for removal

60,0

(2.38)

51,0

(2.01)

71,6 (2.82)

69,5 (2.74)

.2500-20 UNC x 2.500”

socket head cap screw

(Bolt Kit 255634)

M6 x 60 socket head

cap screw

(Bolt Kit 689623)

PA B TaTb

ISO-4401-AC-05-4-A (NFPA D05)

mounting surface

71,6 (2.82)

69,5 (2.74)

219,7 (8.65)

99,5 (3.92)

22,8 (.89) 11,7 (.46)

 6.96 / 6.85 thru 4 holes

276,0 (10.9) Required for removal

60,0

(2.38)

51,0

(2.01)

ISO-4401-AC-05-4-A (NFPA D05)

mounting surface

.2500-20 UNC x 2.500”

socket head cap screw

(Bolt Kit 255634)

M6 x 60 socket head

cap screw

(Bolt Kit 689623)

EPV16-B-**-S-5C-**D-(*)-*-12 CETOP 5 Interface

PA B TaTb

Body/Form Tools/Service Kits

Modified C-16-3S body, standard

aluminum fatigue-rated bodies

mm (inch)

60,4 (2.38)

.344

Dia. thru

2 mtg.

holes

2"

38,1

(1.50)

76,2 (3.00)

12.7 (.50)

2 plcs.

79,2

(3.12)

30,2

(1.19)

100,8

(3.97)

21,6

(.85)

Modified body for use

with EPV16-B

Modified body for use

with EPV16-A

Housing numberPort sizeCode

4G 1/2” BSPP

10H SAE 10

12H SAE 12

Aluminum Steel

6G 3/4” BSPP

EPV16–A EPV16–B

02–185446 02–170238

02–185447 02–166609

02–185448

02–185449

02–166607

02–161582

EPV16–A EPV16–B

02–180048

02–180049

02–180050

02–180051

02–161983

02–161982

02–165500

02–164931

10T SAE 10

12T SAE 12

CETOP5 (NFPA D05) interface (Requires steel housing)

For applications over 210 bar (3000 psi), dimensionally interchangeable steel housings are available upon request.

Roughing Tools

Cavity

Size

Aluminum Steel/Cast Iron Shank Dia.

mm (inches)

C-16-3S RT-16-3S-A-8044 RT-16-3S-S-8045

25,4 (1.000)

Finishing Tools

Cavity

Size

Tool designation Shank Dia.

mm (inches)

For machining

C-16-3S FT-16-3S-AS-8081 25,40 (1.000) Aluminum or steel

Coil Kits

Type 12V 24V

W – Flying leads 02–154072 02–154073

Q – Dual SAE

” Spade 02–317154 02–317155

U – DIN 02–154070 02–154071

Y – Metri–Pack 02–308808 02–308809

F – Weather Pack 02–308810 02–308811

Cartridge Seal Kit 02–154069 CETOP5 Seal Kit 02–319667

Seals for all options included in kit, therefore some models will have extra seals

that will not be needed

Standard form tooling

for C-**-3S cavities

Coil Kits

Seal Kits

Note: The undercut can be machined with a

standard #4 T slot milling cutter modified to

turn down its shank from 3/4 inch to 5/8

inch or its neck diameter of .594 inch.

Standard Cavity Dimensions

19,05

(0.750) Dia.

These diameters

0.7938

(0.031)

29_1.575

(0.062)

6,35

0.250

Dia.

1.575

(0.062)

These diameters

.0508 mm (.002 inch) B

.0254 mm (.001 inch) A

–A–

–B–

The EPV16 cartridge in this

catalog is designed to fit into the

cavity dimensioned on this page.

Cavity bores can be machined

accurately in aluminum or steel.

The necessary UN threads may

be machined using standard

small tools, possibly already in

your machine shop or from a

local tool supplier. For in depth

advice on the machining of

cavities, consult your Vickers

sales specialist.

Either you, our customer, or

Vickers can design and

manufacture customized

manifolds or housings dedicated

to individual applications. We call

the resulting valve packages

Modular Circuit Designs (MCDs).

Cartridges selected for your

application can be

accommodated in one or more

MCDs, according to your

requirements.

0.190 " 0.0635 R

(0.0075 " 0.0025)

3-Way Short Cavity

mm (inch)

unless otherwise specified.

44,45

(1,750)

35,58

(1.401)

31,34

(1.234)

28,62

(1.127)

25,45

(1.002)

3,30/3,68

(0.130/0.145)

1.312”-12

UN 2B

17,46

(0.687)

55,58

(2.188)

37,31

(1.469)

20,62

(0.812)

15,88

(0.625) Dia.

46,02

(1.812)

16,67

(0.656)

1.2

(45)

1.2

(45)

36,5 (1.437) Dia.

Recommended undercut

15,87

(0.625)

45_

15_

Printed in U.S.A.

558 Rev. 7/98

Form No. 00-000 Copyright Eaton Corporation, 0000

Printed in U.S.A

Eaton Hydraulics

15151 Highway 5

Eden Prairie, MN 55344

Telephone: 612 937-7254

Fax: 612 937-7130

www.eatonhydraulics.com

46 New Lane, Havant

Hampshire PO9 2NB

England

Telephone: (44) 170-548-6451

Fax: (44) 170-548-7110