HE-G3-8-LO Festo Shut-off Valve

$ 178.00

Piston gate shut-off valve with 1–10 bar operating pressure and 5200 l/min nominal flow. Offers CRC 3 corrosion resistance, VDMA24364-B1/B2-L LABS conformity, and G3/8 pneumatic connections.

Shut off valves and soft-start dump valves

HE-G3/8-LO Festo Shut-off valve

Model Identifier HE-G3/8-LO
Official Part Number 197133
GTIN Standard 4052568160203

Technical Overview

The HE-G3/8-LO is a manually actuated 3/2-way bistable shut-off valve designed for reliable compressed air preparation. Utilizing a piston gate valve design with a soft sealing principle, this valve provides a high flow rate of 5200 l/min. Constructed with a die-cast aluminium and PBT housing and NBR/TPE-U(PU) seals, it is rated for CRC 3 high corrosion stress, making it suitable for demanding industrial environments. It supports in-line installation and features G3/8 pneumatic ports for primary connections and a G1 port for exhaust.

Key Features

  • 3/2-way bistable valve function
  • Manual actuation for direct control
  • Piston gate valve design
  • Soft sealing principle
  • High corrosion resistance (CRC 3)
  • Non-reversible flow direction
  • Flexible mounting position with through-hole installation
  • LABS (PWIS) conformity to VDMA24364-B1/B2-L

High standard nominal flow rate of 5200 l/min (standardized to DIN 1343)

Technical Specification Matrix

ParameterValue
DesignPiston gate valve
Type of actuationManual
Sealing principleSoft
Exhaust-air functionWithout flow control option
Manual overrideNone
Symbol00991672
Valve function3/2 bistable
Operating pressure1 bar ... 10 bar
C value20.95 l/sbar
b value0.42
Standard nominal flow rate (standardised to DIN 1343)5200 l/min
Operating mediumCompressed air to ISO 8573-1:2010 [7:4:4]
Corrosion resistance class CRC3 - high corrosion stress
LABS (PWIS) conformityVDMA24364-B1/B2-L
Media temperature-10 °C ... 60 °C
Ambient temperature-10 °C ... 60 °C
Type of mountingIn-line installation With through-hole
Mounting positionoptional
Flow directionNon-reversible
Product weight1100 g
Pneumatic connection, port 1G3/8
Pneumatic connection, port 2G3/8
Pneumatic connection, port 3G1
Material sealsNBR TPE-U(PU)
Material housingDie-cast aluminium PBT

Industrial Applications

1. Lockout/Tagout (LOTO) Safety Isolation for Automated Packaging Lines

Used as the primary manual safety isolation point for pneumatic packaging machinery. The valve is installed at the service unit (FRL) inlet to allow maintenance personnel to manually shut off the air supply and verify zero energy state before entering the machine envelope.

Problem Solved

Prevents accidental machine startup and releases trapped residual pressure during maintenance, mitigating crush hazards for technicians. The specific 'LO' design enables padlocking in the closed position, complying with OSHA 29 CFR 147 standards for hazardous energy control.

3/2 bistable valve functionG1 exhaust port for rapid ventingOSHA compliancePadlock facilityResidual pressure exhaust

2. Corrosion-Resistant Air Control for Industrial Car Wash Systems

Functions as the main air supply shut-off for pneumatic brushes and dryers in vehicle wash facilities. The valve controls the compressed air distribution to high-humidity zones where cleaning agents and water vapor are constantly present.

Problem Solved

Standard valves fail quickly due to corrosion from humidity and aggressive cleaning chemicals (soaps, waxes). This valve's CRC 3 (High Corrosion Stress) rating and PBT/Die-cast aluminium construction resist these harsh environmental factors, ensuring long service life and reducing downtime.

CRC 3 corrosion resistanceAmbient temperature -10°C ... 60°CChemical resistancePBT housingSoft sealing principle

3. Main Air Supply for Outdoor Timber Processing Machinery

Acts as the manual master switch for pneumatic clamping and feed cylinders on outdoor sawmill equipment. It manages high-volume air flow required to drive heavy-duty actuators used in log handling and cutting operations.

Problem Solved

Outdoor timber processing requires valves that withstand weather exposure while delivering high flow rates for heavy loads. This unit provides a massive 5200 l/min flow rate (exceptional for a G3/8 valve) to power large cylinders, while its CRC 3 rating protects it from rain and outdoor humidity.

Flow rate 5200 l/minOperating pressure 1...10 barOutdoor exposure suitableManual piston gate actuationG3/8 pneumatic connection

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