173904

Name: Festo 173904 On/off valve HEE-3/8-D-MINI-24-NPT
Brand: Festo

On/off valve HEE-3/8-D-MINI-24-NPT

The Festo 173904 is a 40 mm wide electrical piston gate valve featuring a soft sealing principle and a 3/2-way, closed, monostable valve function with positive overlap. This piloted component operates at pressures from 0.25 MPa to 1.6 MPa (2.5 bar to 16 bar) and delivers a normal nominal flow rate of 1600 l/min with a C value of 7.3 l/sbar and a b-value of 0.28. It utilizes a mechanical spring reset, a detenting manual override, and a 24 V DC, 2.5 W coil supporting 100% duty cycle and +/- 10% permissible voltage fluctuations. Operating on compressed air per ISO 8573-1:2010 [7:4:4] or inert gases with a corrosion resistance class of CRC 2, this non-throttleable exhaust air unit allows oil lubrication and carries a required-use designation. Submit the exact part number, quantity, and application requirements for a formal quotation.

Request pricing and availabilityCommercial response within one business day for your destination and required quantity.

Request a Quote

Why no listed price?

Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.

Manufacturer: Festo
Part number: 173904
Data verification: Manufacturer evidence reviewed

For a faster response, include quantity, condition, and delivery destination.

Exact part-number verificationTechnical properties are matched to 173904.

Worldwide sourcingSupport for planned and urgent industrial requirements.

Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Width dimension: 40 mm
Structural design: Piston gate valve
Actuation type: Electrical
Sealing principle: Soft
Exhaust air function: Cannot be throttled
Manual override: Detenting
Reset method: Mechanical spring
Type of control: Piloted
Valve function: 3/2-way, closed, monostable
Operating pressure: 0.25 MPa...1.6 MPa | 2.5 bar...16 bar
Lap: Positive overlap
C value: 7.3 l/sbar
b-value: 0.28
Normal nominal ow rate (normalized to DIN 1343): 1600 l/min
Duty cycle: 100%
Coil characteristics: 24 V DC: 2.5 W
Permissible voltage uctuations: +/- 10%
Operating medium: Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
Information on operating and pilot media: Operation with oil lubrication possible (required for further use)
Corrosion resistance class (CRC): 2 - Moderate corrosion stress
Note on materials: RoHS compliant
LABS (PWIS) conformity: VDMA24364-B1/B2-L
Temperature of medium: -10 °C...60 °C
Ambient temperature: -10 °C...60 °C
Type of mounting: In-line installation | With accessories
Mounting position: Any
Flow direction: Non-reversible
Product weight: 223 g
Pneumatic connection 1: 3/8 NPT

Engineering context

Identification and RFQ Guidance

Confirm the exact configuration

Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Festo 173904. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.