VUVS-L20-M52-AZD-G18-F7 Festo Solenoid Valve

Technical Overview

The VUVS-L20-M52-AZD-G18-F7 is a high-performance 5/2-way monostable solenoid valve featuring a piston gate valve design and electric actuation. Built with a durable die-cast aluminum housing and pneumatic spring reset, it delivers a standard nominal flow rate of 700 l/min. This universal directional control valve is optimized for moderate corrosion stress environments and is suitable for both manifold rail and through-hole mounting configurations.

Key Features

5/2-way, monostable function
Piston gate valve design
Electric actuation with external pilot air supply
Pneumatic spring reset
Soft sealing principle
Detenting and non-detenting manual override
Reversible flow direction
RoHS-compliant materials
Cleanroom suitability Class 6 according to ISO 14644-1

Technical Specification Matrix

Parameter	Value
Valve function	5/2-way, monostable
Type of actuation	Electric
Valve size	21 mm
Standard nominal flow rate	700 l/min
Pneumatic working port	G1/8
Operating pressure (MPa)	-0.09 MPa ... 1 MPa
Operating pressure (bar)	-0.9 bar ... 10 bar
Design	Piston gate valve
Type of reset	Pneumatic spring
Approval	c UL us - Recognized (OL)
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	External
Flow direction	Reversible
Symbol	00991026
Lap	Overlap
Pilot pressure (MPa)	0.25 MPa ... 1 MPa
Pilot pressure (bar)	2.5 bar ... 10 bar
b value	0.35
C value	2.9 l/sbar
Switching time off	29 ms
Switching time on	20 ms
Max. positive test pulse with 0 signal	1900 µs
Max. negative test pulse with 1 signal	2700 µs
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	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	188 g
Type of mounting	On manifold rail With through-hole
Breather connection	Not ducted
Pneumatic spring connection 12	M5
Pilot exhaust port 84	M5
Pilot air port 14	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. Low-Impact Pneumatic Clamping for Electronics Assembly

Used to control low-pressure pneumatic cylinders during the assembly of fragile smartphone components (e.g., screens or PCBs). The valve isolates the high-pressure pilot air from the low-pressure working air, allowing the cylinders to operate gently at 0.5 to 1.5 bar without stalling the valve.

Problem Solved

Prevents damage to delicate electronic parts caused by standard 6-bar clamping forces. Standard internal-pilot valves fail to switch at low pressures (<2.5 bar), but this external pilot model allows the main line to run at very low pressures while maintaining reliable high-speed switching.

External Pilot (AZD)Operating Pressure -0.9 bar ... 10 barCleanroom Class 6Pilot Pressure 2.5 bar ... 10 bar

2. Vacuum-Driven Wafer Handling in Photovoltaic Manufacturing

Controls double-acting vacuum actuators or routes vacuum to suction cups for lifting brittle solar wafers. The valve directs the vacuum source to the gripping head while venting the other port to the atmosphere, ensuring rapid grip and release cycles in a cleanroom environment.

Problem Solved

Enables reliable switching of negative pressure (vacuum) for handling extremely brittle materials where positive pressure cannot be used. The high nominal flow rate (700 l/min) ensures rapid evacuation and fast cycle times required for high-volume solar cell production.

Operating Pressure -0.9 bar (Vacuum)Standard Nominal Flow Rate 700 l/min5/2-way MonostableISO Class 6 Cleanroom

3. Reliable Actuation in Woodworking Machines with Fluctuating Air Supply

Operates pneumatic clamps and stops on large woodworking CNC routers where the main plant air supply fluctuates due to heavy intermittent loads. The external pilot supply ensures the valve switches firmly even if the main line pressure drops momentarily.

Problem Solved

Eliminates valve stalling and incomplete actuation caused by pressure dips in the main plant air supply (dirty/fluctuating air). The separation of the pilot and power units protects the control mechanism from pressure spikes and ensures safety-critical clamping remains engaged.

External Pilot Air SupplyVibration Resistance Level 2Pneumatic Spring ResetCRC 2 Corrosion Resistance