Name: VUWS-L25-M32C-A-G14 Festo Pneumatic Valve - INOSAKI
SKU: Festo-575483
Price: 58.50 USD
Availability: InStock

Technical Overview

The Festo VUWS-L25-M32C-A-G14 is a high-performance 3/2-way, closed, monostable pneumatic valve designed for universal directional control. Built with a robust piston gate valve design and a soft sealing principle, it provides a standard nominal flow rate of 1000 l/min. This pneumatically actuated valve features a durable wrought aluminium alloy piston slide and painted housing, supporting operational stability within a pressure range of 2.5 to 10 bar. It is certified for use in ATEX hazardous zones 1, 2, 21, and 22, and meets ISO Class 6 cleanroom standards, making it suitable for a wide range of industrial automation environments.

Key Features

3/2-way, closed, monostable valve function
Pneumatic actuation with internal pilot air supply
Robust piston gate valve design with pneumatic spring reset
ATEX explosion protection for Zones 1, 2, 21, and 22
Cleanroom suitability Class 6 according to ISO 14644-1
CRC 2 moderate corrosion resistance class
Flexible mounting options including manifold rail or through-hole
RoHS-compliant material construction

Technical Specification Matrix

Parameter	Value
Valve function	3/2-way, closed, monostable
Type of actuation	Pneumatic
Valve size	26.5 mm
Standard nominal flow rate	1000 l/min
Pneumatic working port	G1/4
Operating pressure (MPa)	0.25 MPa ... 1 MPa
Operating pressure (bar)	2.5 bar ... 10 bar
Design	Piston gate valve
Type of reset	Pneumatic spring
Approval	c UL us - Recognized (OL)
Nominal size	6.3 mm
Exhaust-air function	With flow control option
Sealing principle	Soft
Mounting position	optional
Manual override	None
Type of piloting	Direct
Pilot air supply	Internal
Flow direction	Non-reversible
Symbol	00991742
lap	Overlap
Pilot pressure (MPa)	0.25 MPa ... 1 MPa
Pilot pressure (bar)	2.5 bar ... 10 bar
Switching time off	25 ms
Switching time on	10 ms
Explosion protection	Zone 1 (ATEX), Zone 2 (ATEX), Zone 21 (ATEX), Zone 22 (ATEX)
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	241 g
Type of mounting	On manifold rail With through-hole
Breather connection	Not ducted
Pilot air port 12	M5
Pneumatic connection, port 1	G1/4
Pneumatic connection, port 2	G1/4
Pneumatic connection, port 3	G1/4
Note on materials	RoHS-compliant
Material seals	HNBR NBR
Material housing	Painted
Material piston slide	Wrought aluminium alloy
Material screws	Galvanised steel

Industrial Applications

1. ATEX-Compliant Powder Conveying Gate Control

Utilizing the ATEX Zones 1, 2, 21, and 22 explosion protection certification, this valve safely actuates pneumatic diverter gates in combustible powder transfer systems. It operates using compressed air at 2.5 to 10 bar, delivering a high standard nominal flow rate of 1000 l/min through G1/4 ports to rapidly switch heavy diverter flaps without electrical ignition risks.

Problem Solved

Eliminates the risk of electrical sparking in explosive dust environments by utilizing pure pneumatic actuation and internal pilot air supply, while simultaneously providing enough flow capacity to overcome high mechanical inertia in bulk material handling.

ATEX Zone 21/221000 l/min flow ratePneumatic actuationG1/4 pneumatic connectionInternal pilot air supply

2. Cleanroom Automated Wafer Clamping System

Deployed in ISO 14644-1 Class 6 cleanroom environments to drive pneumatic cylinders for automated semiconductor handling chucks. The valve features a rapid 10 ms switching time on and incorporates shock and vibration resistance to severity level 2, ensuring reliable wafer gripping during high-speed robotic transport without generating particulate contamination.

Problem Solved

Addresses the need for rapid and reliable pneumatic cylinder actuation in sensitive manufacturing environments by meeting Class 6 cleanroom suitability and LABS (PWIS) conformity VDMA24364-B1/B2-L, avoiding product contamination.

Cleanroom Class 610 ms switching time onVibration resistance level 2LABS (PWIS) conformityPiston gate valve

3. Fail-Safe Pallet Stopper Actuation in Secondary Packaging

Controls heavy-duty pallet lifting and stopping cylinders on packaging conveyors. The 3/2-way closed, monostable configuration utilizes a pneumatic spring for its type of reset, ensuring the valve safely exhausts the cylinder if the pilot pressure drops below 0.25 MPa. Its CRC 2 moderate corrosion resistance tolerates typical industrial washdowns.

Problem Solved

Prevents mechanical jamming and safety hazards during unexpected pressure drops by providing a fail-safe overlap and pneumatic spring reset that automatically returns the valve to a closed state, protecting both machinery and operators.

3/2-way closed monostablePneumatic spring reset0.25 MPa ... 1 MPa pilot pressureCorrosion resistance class CRC 2Overlap lap