Cartridge Valves - Directional Control Valves - Logic Element - Vent To Open

EV12-S34

DIRECTIONAL ELEMENT, VENTED

Overview

Description

The ev12-s34xx is a screw-in, cartridge style, spool-type, hydraulic directional element.

Operation

It is a spring biased blocking valve which will shift to allow full flow from port 1 to 2 only when port 3 is vented to create a pressure drop across the internal orifice which exceeds the pressure of the bias spring value.

Features

  • Multiple function/application potential.
  • Low pressure drop.
  • Industry-common cavity.
  • Smooth shift transition.
  • Optional tall cap version for higher bias spring values.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Flow rating:
  • See performance graph
Maximum internal leakage:
  • 164 ml/min (10 in³/min) At 207 bar (3000 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 90 °C (-40 to 194 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406
Unit weight:
  • 0.41 kg (0.9 lb) EV12-S34T
  • 0.28 kg (0.61 lb) EV12-S34
Internal wetted surface area:
  • 253 cm² (39.23 in²) EV12-S34T
  • 206 cm² (31.91 in²) EV12-S34
EV12-S34_Perf_Chrt(2022-02-24)
EV12-S34_Dim_Dwg(2022-02-24)
Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-S3X-MM X = seal option
EV12-S34_Order(2022-02-24)

Model Options

EV12-S34CD-H-J-R
C Adaptor Option
CODE
DESCRIPTION
BLANK
Standard Cap
T
Tall Cap
D Cage Option
CODE
DESCRIPTION
BLANK
Standard Cage
G
Meteering (staggered holes)
H Line Body
CODE
DESCRIPTION
0
No Body
12T
Aluminum SAE 12
12TD
Ductile Iron SAE 12
6BD
Ductile Iron BSPP 3/4" (6)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
10
10 psi Bias Spring
40
40 psi Bias Spring
80
80 psi Bias Spring
100
100 psi Bias Spring
160
160 psi Bias Spring
240
240 psi Bias Spring