Valves - Directional Controls - Logic Element - Pilot to Close

HEP42-S35

DIRECTIONAL ELEMENT, PILOTED

Overview

Description

The HEP42-S35 is a high pressure, spool type, screw-in, cartridge style, hydraulic directional element, with multi-function potential when used with other directional, pressure or flow control devices

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. The HEP42-S35 is a pilot-to-close directional element. With no pressure at port 3 flow will be allowed from port 1 to 2 once the bias spring force is overcome with pressure at port 1

Features

  • Multiple function/application potential.
  • Low pressure drop.
  • All HyPerformance products are tested to the rigorous standards of the NFPA specification T2.6.1.
  • All HyPerformance valves are tested at a verification level of 90% and an assurance of 99%.

Ratings

Pressure Ratings
Pressure rating
350 bar (5075 psi)
420 bar (6090 psi) 10% cycle life
Proof pressure
690 bar (10000 psi)
Burst pressure
1380 bar (20000 psi)
Flow Ratings
Flow rating
379 lpm (100 gpm)
Maximum internal leakage
164 ml/min (10 in³/min) At 350 bar (5075 psi)
Other Ratings
Cycle life
One million cycles
Temperature Ratings
Maximum 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 urethane seals
Storage temperature
-40 to 70 °C (-40 to 160 °F)
Ambient temperature
-40 to 90 °C (-40 to 194 °F)

Operating Parameters

Fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
18/16/13 per ISO 4406

Properties

Cartridge weight
1.04 kg (2.30 lb)
Internal wetted surface area
484 cm² (75 in²)

Performance

HEP42-S35_Perf_Dim

Materials

Materials

Cartridge: Weight: 1.04 kg. (2.30 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; PPDI Urethane seals and no backup rings standard.

Ported Body: Weight: 9.03 kg. (19.9 lbs.); H-series ductile iron standard. Rated to 345 bar (5000 psi).

Installation Specifications

Cavity
Hvc42-s3
Cartridge installation torque
394 to 420 N-m (290 to 310 ft-lb) Steel/ductile iron cavity
298 to 311 N-m (220 to 230 ft-lb) Aluminum cavity
Orientation restriction
None

Accessories

Seal kit
SK42-S3N-MM Buna N
SK42-S3V-MM Fluorocarbon
SK42-S3U-OO Urethane

Order code

POSITION
CODE
DESCRIPTION
HEP42-S35-H-J-R
H
Line Body
H
0
No Body
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
U
PPDI Urethane
R
Spring
R
20
20 psi Bias Spring
R
50
50 psi Bias Spring
R
80
80 psi Bias Spring
R
175
175 psi Bias Spring
HEP42-S35_Order