SKU: 4-HOBBS-2 | UPC: 887753546135
DeatschWerks Adjustable 2 PSI Hobbs Switch with Pigtail (0.5A) – 1/8″ NPT (1-3 PSI Range)
The DeatschWerks is an adjustable Hobbs pressure switch with a nominal 2 PSI activation point (tunable from 1-3 PSI) and a 1/8″ NPT thread. It includes a pre-wired pigtail for easy electrical connection. This versatile switch is commonly used to activate or deactivate circuits based on low-pressure signals, making it ideal for fuel pump priming, low-oil-pressure warning lights, electric fans, nitrous safety systems, or other low-pressure-triggered accessories.
The adjustable range allows fine-tuning to your specific application, while the rugged construction ensures reliable operation in demanding performance environments. Rated for 0.5A continuous load, it provides a clean, professional solution for custom vehicle builds and performance upgrades.
Key Features
- Adjustable Activation Point – Nominal 2 PSI, tunable from 1-3 PSI for precise control
- 1/8″ NPT Thread – Standard fitting for easy installation into fuel rails, oil galleries, or low-pressure lines
- Included Pigtail – Pre-wired harness for simple plug-and-play electrical connection
- 0.5A Rating – Suitable for low-current circuits and accessories
- Reliable Performance – Durable design for consistent operation in performance applications
| Spec | Detail |
|---|---|
| Part Number | 4-HOBBS-2 |
| Brand | DeatschWerks |
| Type | Adjustable 2 PSI Hobbs Pressure Switch with Pigtail (0.5A) |
| Activation Pressure | 2 PSI nominal (adjustable 1-3 PSI) |
| Thread Size | 1/8″ NPT |
| Current Rating | 0.5A |
| Country of Origin | United States |
| Warranty | DeatschWerks Limited Warranty |
Whats Included
- DeatschWerks Adjustable Hobbs Switch
- Pigtail wiring harness
Product Notes
- Adjustable from 1-3 PSI for custom tuning to your application
- Commonly used for low-pressure safety, warning lights, fuel pump priming, or auxiliary systems
- Professional installation recommended for proper wiring and pressure line integration
Installation Notes
- Install into a 1/8″ NPT port on fuel rail, oil gallery, or low-pressure reference line
- Connect pigtail to desired electrical circuit (normally open or normally closed depending on application)
- Estimated time: 30–60 minutes
Why Choose DeatschWerks Hobbs Switches?
- Adjustable pressure range for precise control in performance applications
- Included pigtail simplifies wiring
- Trusted by enthusiasts and professional builders for quality and reliability
Frequently Asked Questions
- Q: What does a Hobbs switch do?
A: It opens or closes an electrical circuit when the preset pressure (adjustable 1-3 PSI) is reached. - Q: Can I use this for low-oil-pressure warning?
A: Yes, it is commonly used for low-pressure safety switches, warning lights, or fuel pump priming circuits. - Q: Is professional installation recommended?
A: Recommended proper wiring and pressure line connections are important for safety and reliability.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure DeatschWerks retail packaging
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