Valves - Directional Controls - Logic Element - Pilot to Close

EP12-S35

DIRECTIONAL ELEMENT, PILOTED

Overview

Description

The ep12-s35xx is a screw-in, cartridge style, pilot to close hydraulic directional element.

Operation

The valve is a spring-biased blocking valve which will shift to allow full flow from port 1 to 2 only when the pressure at port 1 exceeds the cumulative pressure of port 3, plus the bias spring pressure value.

Features

  • Multiple function/application potential.
  • Low pressure drop.
  • Industry-common cavity.
  • Manual override option available with 80 psi spring.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Flow rating:
  • See performance graph
Maximum internal leakage:
  • 131 ml/min (8 in³/min) At 345 bar (5000 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
  • -26 to 204 °C (-15 to 400 °F) With high durometer 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:
  • 0.28 kg (0.61 lb) EP12-S35
  • 0.44 kg (0.97 lb) EP12-S35T
  • 0.31 kg (0.69 lb) EP12-S35M
Internal wetted surface area:
  • 207 cm² (32.15 in²) EP12-S35
  • 269 cm² (41.63 in²) EP12-S35T
  • 190 cm² (29.52 in²) EP12-S35M
EP12-S35_Perf_Chrt(2022-02-24)
EP12-S35_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
EP12-S35_Order(2022-02-24)

Model Options

EP12-S35CDF-H-J-R
C Adaptor Option
CODE
DESCRIPTION
BLANK
Standard Cap
T
Tall Cap
D Cage Option
CODE
DESCRIPTION
BLANK
Standard Cage
G
Metering (staggered holes)
F Stroke Limiter
CODE
DESCRIPTION
BLANK
Standard
M
Stroke Limiter
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