Festo VUVS-L25-B52-D-G14-FN – 5/2 Bistable Solenoid Valve | G1/4 1300 l/min | Murali Pneumatics Coimbatore

About the Festo VUVS-L25-B52-D-G14-FN Bistable Solenoid Valve

The Festo VUVS-L25-B52-D-G14-FN is a size-25, 5/2-way bistable directional control valve from Festo's VUVS series — a workhorse valve family engineered for high flow, compact installation, and robust performance in industrial automation. With an impressive nominal flow rate of 1300 l/min through G1/4 ports and a piston gate valve design with soft sealing, this valve is built for demanding cycle rates across a wide range of pneumatic machinery. As a bistable (double-solenoid) valve, it holds its last switched position mechanically, with no electrical power required to maintain state — a critical safety and energy-saving feature in many automated lines. Note: This part number (VUVS-L25-B52-D-G14-FN) is the valve body only, supplied without coil and without plug socket. You must order the appropriate Festo coil and DIN plug socket separately to match your control voltage (e.g., 24V DC or 230V AC) and connector type. Contact Murali Pneumatics — we stock a full range of compatible VUVS coils and sockets.

Key Features

• 5/2-way bistable function — The valve maintains its last switched position without continuous power, reducing energy consumption and ensuring a defined safe state on power loss.
• High nominal flow rate of 1300 l/min — Suitable for fast-acting actuators and large-bore cylinders where flow restriction would cause cycle time loss.
• Internal pilot actuation — No separate pilot air supply line needed; simplifies installation and reduces plumbing complexity.
• Piston gate valve design with soft sealing — Provides zero leakage at rest and reliable switching, even at the lower end of the pressure range (1.5 bar).
• ATEX certified for Zones 1, 2, 21, and 22 — Approved for use in explosive atmospheres; suitable for paint shops, fuel handling, grain processing, and chemical plants.
• Cleanroom Class 6 (ISO 14644-1) — Usable in controlled manufacturing environments such as pharmaceutical packaging and precision electronics assembly.
• LABS/PWIS conformity (VDMA 24364-B1/B2-L) — Safe for use near paint and coating lines; will not cause fisheye or adhesion defects in painted components.
• Corrosion Resistance Class 2 — Handles moderate corrosion environments; suitable for humid factory floors and outdoor-covered installations.
• Detenting manual override — Allows manual valve actuation during setup, commissioning, or power-off maintenance without electrical control.
• With flow control option on exhaust — Exhaust ports can be fitted with flow control fittings to regulate actuator speed without additional in-line restrictors.
• Vibration and shock resistant — Qualified to FN 942017 / EN 60068 transport severity level 2; robust enough for mobile machinery and high-vibration press environments.

Technical Specifications

Parameter	Value
Festo Part Number	VUVS-L25-B52-D-G14-FN
Series	VUVS
Valve Function	5/2-way bistable
Type of Actuation	Electric (without coil — order separately)
Valve Size	26.5 mm
Nominal Flow Rate	1300 l/min (standardised per DIN 1343)
C Value	5.6 l/s·bar
b Value	0.4
Design	Piston gate valve
Sealing Principle	Soft sealing
Type of Piloting	Pilot actuated
Pilot Air Supply	Internal
Flow Direction	Non-reversible
Operating Pressure	1.5 bar … 8 bar (0.15 … 0.8 MPa)
Pilot Pressure	1.5 bar … 8 bar (0.15 … 0.8 MPa)
Switching Time (reversal)	27 ms
Manual Override	Detenting
Exhaust-Air Function	With flow control option
Mounting Position	Optional (any orientation)
Pneumatic Connection – Port 1 (supply)	G1/4
Pneumatic Connection – Port 2 (working A)	G1/4
Pneumatic Connection – Port 3 (exhaust)	G1/4
Pneumatic Connection – Port 4 (working B)	G1/4
Pneumatic Connection – Port 5 (exhaust)	G1/4
Breather Connection	Not ducted
Operating Medium	Compressed air per ISO 8573-1:2010 [7:4:4]
Note on Medium	Lubricated operation possible; if lubricated, always lubricate
Pilot Medium	Compressed air per ISO 8573-1:2010 [7:4:4]
Media Temperature Range	-10 °C … +60 °C
Ambient Temperature Range	-10 °C … +60 °C
IP Rating	Per coil/socket selected
Electrical Connection	Per plug socket selected
Coil Voltage	Per coil selected
Explosion Protection (ATEX)	Zone 1, Zone 2, Zone 21, Zone 22 (observe certificate)
Corrosion Resistance Class	CRC 2 — Moderate corrosion stress
LABS / PWIS Conformity	VDMA 24364-B1/B2-L
Cleanroom Suitability	Class 6 per ISO 14644-1 (measured per ISO 14644-14)
Vibration Resistance	Severity level 2 per FN 942017-4 / EN 60068-2-6
Shock Resistance	Severity level 2 per FN 942017-5 / EN 60068-2-27
Housing Material	Die-cast aluminium, painted
Piston Slide Material	Wrought aluminium alloy
Seal Material	HNBR, NBR
Screw Material	Galvanised steel
Product Weight	324 g
RoHS Compliant	Yes

Common Applications

• Textile machinery in Coimbatore and Tiruppur — Controlling double-acting cylinders on loom shuttle mechanisms, ring frame doffing systems, and auto-leveller actuators where bistable function prevents unintended movement on e-stop.
• CNC machining centres and VMCs — Pneumatic clamping fixtures, tool changer actuators, and coolant nozzle positioning where the valve must hold position between machining cycles without continuous solenoid energisation.
• Plastic injection moulding — Core pull cylinders and hot runner valve gates requiring fast (27 ms) switching and high flow to maintain cycle time on large-bore actuators.
• Packaging and form-fill-seal lines — Sealing jaw actuators, reject gates, and product diverters in high-speed lines where low air consumption (bistable) and precise repeat positioning are needed.
• Paint and coating lines (LABS-safe) — Safe for use in automotive body shops and furniture coating plants; PWIS conformity means no contamination of painted surfaces.
• ATEX hazardous area installations — With the correct ATEX-rated coil selected, this valve body meets Zone 1/2/21/22 requirements for pharmaceutical solvent handling, grain silos, and fuel dispensing systems.

Why Buy from Murali Pneumatics?

• Authorized Festo Channel Partner since 1991 — Over three decades of Festo product expertise based right here in Coimbatore.
• 100% genuine Festo products — Every item comes with full Festo manufacturer warranty. No grey market, no counterfeits.
• Ready stock of popular VUVS models — Valve bodies, coils, and DIN sockets stocked locally; no waiting for import lead times on standard configurations.
• Technical support you can actually use — Call or WhatsApp +91 98422 47546 and speak with someone who knows the VUVS series and can help you select the right coil, socket, and accessories for your panel.

Compatible Accessories (Order Separately)

• Festo Coils for VUVS-L25 — Available in 24V DC, 110V AC, 230V AC and other voltages; must be matched to your control panel supply
• DIN Plug Sockets — Required to make electrical connection to the coil; available with and without LED indicator and surge suppressor
• Silencers (U-series or VASK) — For ports 3 and 5 (exhaust) to reduce noise on open exhaust installations
• Flow Control Fittings (GRLA / GRLZ) — For meter-out speed control on actuators; mount directly into G1/4 working ports
• Push-In Fittings (QS-G1/4-8, QS-G1/4-10, QS-G1/4-12) — For fast, leak-free tubing connections on all G1/4 ports
• Polyurethane or Nylon Tubing (PUN / PLN series) — Compatible OD: 6 mm, 8 mm, 10 mm, 12 mm depending on flow requirement
• Sub-base / Manifold Blocks — For multi-valve manifold assemblies; ask us for compatible VUVS manifold options
• Valve Mounting Brackets — For panel or rail mounting in control cabinets and valve stations

All accessories available from stock at our Coimbatore store. Ask us to bundle your complete valve assembly — body, coil, socket, fittings, and tubing — in one order.