VUVS-L20-M52-MD-G18-F7-1C1 Festo Solenoid Valve

Technical Overview

The Festo VUVS-L20-M52-MD-G18-F7-1C1 is a robust 5/2-way monostable solenoid valve featuring a piston gate design with a mechanical spring reset. Designed for universal directional control, it provides a standard nominal flow rate of 700 l/min and operates via electric actuation at 24V DC. The valve is pilot-actuated with internal pilot air supply, incorporating a soft sealing principle and a painted die-cast aluminium housing. It supports both detenting and non-detenting manual override and is suitable for mounting on manifold rails or via through-holes. This model is RoHS-compliant, offers CRC 2 moderate corrosion stress resistance, and meets Cleanroom Class 6 standards according to ISO 14644-1.

Key Features

5/2-way, monostable function
Electric actuation with 24V DC operating voltage
Piston gate valve design with mechanical spring reset
Soft sealing principle for reliable operation
Pilot actuated with internal pilot air supply
Detenting and non-detenting manual override
IP65 degree of protection with plug socket
RoHS-compliant materials and painted die-cast aluminium housing

Technical Specification Matrix

Parameter	Value
Valve function	5/2-way, monostable
Type of actuation	Electric
Valve size	21 mm
Standard nominal flow rate (standardised to DIN 1343)	700 l/min
pneumatic working port	G1/8
Operating voltage	24V DC
Operating pressure	0.25 MPa ... 1 MPa
Operating pressure (bar)	2.5 bar ... 10 bar
Design	Piston gate valve
Type of reset	Mechanical spring
Approval	c UL us - Recognized (OL)
Degree of protection	IP65 With plug socket To IEC 60529
Nominal size	5.7 mm
Exhaust-air function	With flow control option
Sealing principle	Soft
Mounting position	optional
Manual override	Detenting Non-detenting
Type of piloting	Pilot actuated
Pilot air supply	Internal
Flow direction	Non-reversible
Symbol	00991035
lap	Overlap
b value	0.35
C value	2.9 l/sbar
Switching time off	44 ms
Switching time on	12 ms
Duty cycle	100%
Max. positive test pulse with 0 signal	1900 µs
Max. negative test pulse with 1 signal	2700 µs
Characteristic coil data	24 V DC: 2.6 W
Permissible voltage fluctuations	+/- 10 %
Operating medium	Compressed air to ISO 8573-1:2010 [7:4:4]
Note on operating and pilot medium	Lubricated operation possible (in which case lubricated operation will always be required)
Vibration resistance	Transport application test with severity level 2 to FN 942017-4 and EN 60068-2-6
Shock resistance	Shock test with severity level 2 to FN 942017-5 and EN 60068-2-27
Corrosion resistance class CRC	2 - Moderate corrosion stress
LABS (PWIS) conformity	VDMA24364-B1/B2-L
Cleanroom suitability	measured according to ISO 14644-14 Class 6 according to ISO 14644-1
Media temperature	-10 °C ... 60 °C
Pilot medium	Compressed air to ISO 8573-1:2010 [7:4:4]
Ambient temperature	-10 °C ... 60 °C
Product weight	217 g
Electrical connection	Type C To EN 175301-803
Type of mounting	On manifold rail With through-hole
Breather connection	Not ducted
Pilot exhaust port 84	M5
Pneumatic connection, port 1	G1/8
Pneumatic connection, port 2	G1/8
Pneumatic connection, port 3	G1/8
Pneumatic connection, port 4	G1/8
Pneumatic connection, port 5	G1/8
Note on materials	RoHS-compliant
Material seals	HNBR NBR
Material housing	Die-cast aluminium Painted
Material piston slide	Wrought aluminium alloy
Material screws	Galvanised steel

Industrial Applications

1. High-Speed Conveyor Reject Diverter System

Integration of the Festo VUVS-L20 valve to control a double-acting pneumatic cylinder that pushes defective products off a fast-moving packaging line.

Problem Solved

Automated quality control systems require rapid, reliable physical rejection of non-conforming items without interrupting the main production flow. A power-loss fail-safe is needed to ensure the reject arm retracts to prevent jamming.

5/2-way monostable700 l/min flow rate12ms switching timeSpring return safetyPackaging automation

2. Pneumatic Clamping Fixture for CNC Machining

Using the robust VUVS valve to actuate heavy-duty toggle clamps on a machining fixture, holding metal parts securely during milling or drilling operations.

Problem Solved

Machining environments involve coolant spray and metal shavings which damage sensitive components. The fixture requires a valve with high ingress protection and a robust piston gate design to withstand vibration and contamination while providing consistent clamping force.

IP65 protectionRobust piston gate valveDouble-acting cylinder controlVibration resistanceCNC fixture

3. Bulk Material Hopper Gate Automation

actuation of a slide gate on a dispensing hopper for aggregate or grain handling, utilizing the valve's high flow to drive a larger bore cylinder in a dusty environment.

Problem Solved

Industrial bulk handling often occurs in environments with high particulate matter. The system requires a durable valve that can survive moderate corrosion stress (CRC 2) and automatically close the gate (spring return) upon power loss to prevent material spillage.

Corrosion resistance CRC 2Monostable fail-safeExternal pilot airDusty environment reliabilityMaterial handling