Name: Festo HEE-1/4-D-MINI-24 Electrically Actuated Pneumatic On-Off Valve - INOSAKI
SKU: Festo-165071
Price: 122.39 USD
Availability: InStock

Technical Overview

The Festo HEE-1/4-D-MINI-24 (Part Number 165071) is a highly reliable monostable, 3/2-way normally closed electrically actuated pneumatic on-off valve from the D-series preparation unit line. It is constructed with a rugged die-cast aluminum housing and features a piston spool design with a soft sealing principle. Engineered for demanding industrial compressed air networks, it operates within a pressure range of 2.5 to 16 bar and delivers a substantial standard nominal flow rate of 1500 l/min. The valve is actuated via a 24 V DC control coil and incorporates a mechanical spring reset along with a detenting manual override. Equipped with G1/4 pneumatic connections for the primary ports and G1/8 for the exhaust port, it provides flexible installation options including in-line or bracket mounting.

Key Features

3/2-way normally closed (NC) monostable valve function
Piston gate valve design with soft NBR sealing principle
24 V DC control voltage compatible with standard automation I/O
Operating pressure range of 2.5 to 16 bar (36.2 to 232 psi)
Standard nominal flow rate capacity of 1500 l/min
Constructed with a rugged die-cast aluminum housing
Standard G1/4 port connections with a G1/8 exhaust port
Integrated detenting manual override and mechanical spring reset

Technical Specification Matrix

Parameter	Value
Valve Function	3/2-way, normally closed, monostable
Actuation Type	Electric (Pilot actuated)
Control Voltage	24 V DC
Operating Pressure	2.5 to 16 bar
Standard Nominal Flow Rate	1500 l/min
Pneumatic Connections	G1/4 (Ports 1, 2), G1/8 (Port 3)
Design Structure	Piston spool valve
Reset Type	Mechanical spring
Housing Material	Die-cast Aluminum
Sealing Principle	Soft (NBR)
Temperature Range	-10 °C to 60 °C (Ambient and Media)
Grid Dimension Size	Mini (40 mm grid)

Industrial Applications

1. Automated Pneumatic Network Isolation

Utilizing the valve's robust 1500 l/min flow capacity and 24 V DC electric actuation, this unit serves as a primary zone shut-off valve for automated pneumatic circuits. By integrating with a central PLC, engineers can automatically isolate downstream air during emergency stops or maintenance cycles without manual intervention.

Problem Solved

Prevents unauthorized or dangerous pneumatic actuation during system faults by reliably isolating compressed air zones via automated PLC signals.

Pneumatic Isolation24 V DC Actuation3/2-way NC Valve1500 l/min Flow

2. Air Preparation Dump Valve Integration

Fitted at the start of an air preparation unit, the valve quickly dumps downstream pressure when de-energized, utilizing its mechanical spring return and G1/8 exhaust port. Operating up to 16 bar, it is ideal for high-pressure secondary loops requiring immediate exhaust capabilities.

Problem Solved

Eliminates trapped compressed air in downstream actuators when the machine is powered off, ensuring safe machine maintenance conditions.

Dump ValveMechanical Spring Return16 bar PressureExhaust Function

3. Industrial Robotic End-Effector Control

Integrated onto custom robotic tooling, the compact 'Mini' size design and die-cast aluminum body offer a durable solution for feeding air to pneumatic grippers or vacuum generators. The 24 V DC coil easily interfaces directly with standard robotic control I/O modules.

Problem Solved

Delivers a compact, high-flow pneumatic switching solution compatible with 24V DC robot control lines, reducing pressure drops on long air supply hoses.

Robotic Tooling24 V DC ControlPneumatic SwitchingCompact Die-cast Aluminum