Festo R-5-1/4-B 5/2-Way Roller Lever Pneumatic Valve

USD 182.34

5/2-way roller lever valve. Features 550 L/min flow, G1/4 ports, and vacuum compatibility for robust mechanical pneumatic signaling.

SKU Festo-8996 Category
Pneumatic Valves

Festo R-5-1/4-B 5/2-Way Roller Lever Pneumatic Valve

Model Identifier R-5-1/4-B
Official Part Number 8996
GTIN Standard 4052568001728

Technical Overview

The Festo R-5-1/4-B (Part No. 8996) is a high-performance 5/2-way mechanically actuated roller lever valve designed for robust directional control in pneumatic systems. Featuring a durable die-cast aluminum housing and NBR seals, it delivers a standard nominal flow rate of 550 L/min. Suitable for both compressed air and vacuum applications (-0.95 to 10 bar), this poppet-seat valve operates with an actuation force of 75 N. It is ideal for use as a reliable mechanical limit switch or signal valve in automated assembly and conveying operations.

Key Features

  • 5/2-way monostable poppet valve design for reliable directional pneumatic control.
  • Generous 550 L/min standard nominal flow rate.
  • Wide operating pressure range from -0.95 bar (vacuum) to 10 bar.
  • Mechanically actuated roller lever requiring a 75 N actuating force.
  • Robust die-cast aluminum housing with NBR seals designed for harsh industrial environments.
  • Equipped with standard G1/4 female threaded pneumatic connections across all 5 ports.
  • Wide ambient operating temperature tolerance from -10°C to 60°C.
  • Through-hole mounting design for secure installation.

Vacuum-Compatible Dual Operation (-0.95 to 10 bar) with 550 L/min Flow Capacity

Technical Specification Matrix

ParameterValue
Valve Function5/2-Way, Monostable
Actuation TypeMechanical (Roller Lever)
Standard Nominal Flow Rate550 L/min
Operating Pressure-0.95 to 10 bar
Pneumatic ConnectionsG1/4 (Ports 1, 2, 3, 4, 5)
Structural DesignPoppet Seat / Plate Seat
Nominal Width7 mm
Actuating Force75 N
Ambient Temperature-10°C to 60°C
Housing MaterialDie-cast Aluminum
Seals MaterialNBR
Product Weight340 g

Industrial Applications

1. Automated Conveyor End-Position Sensing

Utilizing the valve as a purely mechanical limit switch on a material handling line to detect when a pallet or product has reached the end of the conveyor.

Problem Solved

Provides a highly reliable, non-electrical signal to halt or divert packages, eliminating the risk of electronic sensor failure in dusty or explosive industrial environments.

Pneumatic Limit SwitchConveyor End-StopMaterial HandlingRoller Lever ActuationSignal Valve

2. Mechanical Vacuum Clamping Release in CNC Machining

Integrating the valve into a vacuum workholding circuit where the physical return of a machining carriage mechanically triggers the valve to drop the vacuum hold.

Problem Solved

Because the valve is fully rated for vacuum operation down to -0.95 bar, it successfully manages negative pressure control without requiring pilot air, simplifying the vacuum release circuit.

Vacuum ClampingNegative Pressure ControlCNC Machining5/2-Way Poppet Valve-0.95 Bar

3. Pneumatic Safety Interlock on Press Machines

Installing the roller lever valve at the hinge or track of a machine guard to ensure the main pneumatic supply is only active when the safety door is securely closed.

Problem Solved

Acts as a primary mechanical safeguard. The 550 L/min flow capacity safely controls the main actuator supply, preventing operation and protecting operators if the guard is open.

Safety InterlockPneumatic PressMachine GuardingHigh Flow ValveMechanical Interlocking

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