Description
The Mars 19166 is a direct-acting, 3-way normally closed solenoid valve engineered for dependable general-service performance across a wide range of HVAC, refrigeration, and fluid-control applications. Built with a robust brass body and a durable NBR (Buna-N) seal, this valve handles air, water, and light oil media with equal reliability. Its NEMA 4X-rated enclosure provides protection against dust, splashing water, and corrosion, making it well suited for both indoor and demanding outdoor installations.
Key Specifications
- SKU: 19166
- Valve Type: 3-Way, Normally Closed (NC)
- Operation: Direct Acting
- Port Size: 1/4″ NPT
- Voltage: 120VAC
- Flow Coefficient (Cv): 0.25
- Pressure Range: 0–85 PSI
- Body Material: Brass
- Seal Material: NBR (Buna-N)
- Enclosure Rating: NEMA 4X
Compatible Media
- Air
- Water
- Light Oil
Features & Benefits
- Direct-acting design operates without a minimum pressure differential, ensuring reliable switching even at low or zero line pressure
- 3-way normally closed configuration allows precise flow diversion or mixing control in a single compact valve body
- Brass body construction offers excellent corrosion resistance and long service life in wet or humid environments
- NBR seals provide strong compatibility with water, air, and light petroleum-based oils
- NEMA 4X enclosure protects internal coil components from moisture, dust, and corrosive atmospheres
- 1/4″ NPT connections simplify installation into standard pipe fittings and manifolds
- 120VAC coil voltage is compatible with standard North American electrical systems
- Compact, general-service design suits a broad range of HVAC, pneumatic, and fluid-handling systems
Typical Applications
- HVAC zone control and bypass circuits
- Pneumatic pilot control systems
- Water and light oil distribution lines
- General industrial fluid-switching applications







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