STEWART WARNER M-SW76576 Pressure Switch Normally Npt 792157765764 1/8

( Brand: Stewart Warner ), ( Manufacturer Part Number: M-SW76576 ), ( Part Type: Pressure Switch ), ( Country Of Origin: Chn ), ( UPC: 792157765764 )

Review STEWART WARNER Sw76576 Pressure Switch Psi Normally Open 1/8 Inch Npt fits 2010

The **Stewart Warner M-SW76576 (SW76576) Pressure Switch** is a precision-engineered, normally-open (NO) pressure control device designed for reliable and efficient monitoring of fluid or gas systems in industrial, commercial, and automotive applications. This compact yet robust switch features a **1/8-inch National Pipe Thread (NPT) female connection**, ensuring secure and leak-resistant integration into piping systems with minimal dead space. Built with a **10-psi (pounds per square inch) pressure rating**, it is ideal for low-pressure applications such as HVAC systems, refrigeration units, pneumatic controls, automotive brake systems, and other fluid-handling apparatuses where consistent pressure regulation is critical. The switch operates on a **mercury-free, diaphragm-based mechanism**, eliminating the need for maintenance while delivering accurate and repeatable switching at the specified pressure threshold. Its **normally-open configuration** means the switch remains open (non-conductive) until the pressure reaches the set point, at which point it closes the circuit, triggering downstream controls or alarms. Constructed from durable materials, including corrosion-resistant housing and a sealed internal assembly, this pressure switch is engineered to withstand harsh environments, including exposure to moisture, temperature fluctuations, and minor vibrations, making it a dependable choice for both indoor and outdoor installations. Whether used in a small-scale appliance or as part of a larger automated system, the M-SW76576 provides a cost-effective solution for pressure-sensitive applications, ensuring operational safety and efficiency with minimal downtime.

**Pros and Cons of buying a Stewart-Warner M-SW76576 (Pressure Switch, 10 PSI, Normally Open, 1/8 NPT)**

1. **Compatibility and Reliability** Stewart-Warner is a well-established brand known for manufacturing durable and high-quality pressure switches, commonly used in automotive, HVAC, and industrial applications. This model is designed for systems requiring precise pressure control, such as fuel pumps, compressors, or air conditioning systems.

2. **Specifications Fit Common Needs** The switch is rated for **10 PSI**, making it suitable for low-pressure applications where a sensitive response is required. The **normally open (NO)** configuration means it completes a circuit when pressure exceeds the set point, which is useful for safety or operational control (e.g., activating a relay or alarm).

3. **Threaded Connection (1/8 NPT)** The **National Pipe Thread (NPT)** fitting ensures a secure, leak-resistant connection, which is important in systems where pressure fluctuations or leaks could cause malfunctions.

4. **Widely Available and Replaceable** As a generic part, it is easy to source from automotive suppliers, online marketplaces, or specialty stores. It is also likely to be a drop-in replacement for similar models in older vehicles or machinery.

5. **Cost-Effective for Basic Applications** Compared to specialized or branded alternatives, this switch offers a balance between performance and affordability, making it a practical choice for DIY repairs or budget-conscious projects.

6. **Simple Installation** Requires minimal tools (basic wrench for threading) and no complex wiring, assuming the electrical connections match the system s voltage/current requirements.

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1. **Limited Pressure Range** The **10 PSI** setting may be too low for high-pressure systems (e.g., hydraulic applications or heavy-duty compressors). If the system requires higher pressure thresholds, this switch will not function correctly and may fail prematurely.

2. **No Adjustability** Unlike some pressure switches with adjustable set points, this model is fixed at **10 PSI**. If the application demands a different threshold, an alternative switch must be sourced.

3. **Electrical Compatibility Concerns** The switch s **voltage/current rating** is not specified in the part number. If used in a high-amperage circuit (e.g., a motor starter), it may not handle the load, leading to premature burnout. Always verify the electrical requirements of the system before installation.

4. **Potential for Wear Over Time** Like all mechanical switches, it is subject to **contact erosion** or **seal degradation** with prolonged use, especially in environments with moisture, dust, or corrosive gases. Regular maintenance may be required.

5. **Quality Variability** While Stewart-Warner is reputable, counterfeit or low-quality aftermarket versions may circulate. Purchasing from a trusted supplier reduces the risk of receiving a defective or poorly manufactured unit.

6. **Limited Documentation** The part number alone may not provide detailed wiring diagrams or installation instructions. Users may need to refer to the original equipment manufacturer s (OEM) guidelines or schematics for proper integration.

7. **Not Ideal for Extreme Conditions** Exposure to **high temperatures, vibration, or chemical contaminants** could shorten its lifespan. For harsh environments, a ruggedized or sealed switch may be necessary.

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The **Stewart-Warner M-SW76576** is a **practical, cost-effective solution** for low-pressure applications where a **10 PSI normally open switch** is required. It excels in **automotive, HVAC, or light industrial settings** where reliability and compatibility are prioritized over advanced features. However, its **fixed pressure setting, lack of adjustability, and potential electrical limitations** make it unsuitable for high-pressure or high-load systems.

For users with **clear, low-pressure needs and access to proper wiring**, this switch is a **solid choice**. Those requiring **adjustability, higher pressure ratings, or rugged durability** should consider alternatives like adjustable pressure switches (e.g., Ashcroft, Honeywell) or models with sealed housings.

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- You need a **10 PSI NO switch** for a **low-pressure system** (e.g., fuel pump, air conditioning, or simple compressor control).

- The **1/8 NPT threading** matches your system s fittings.

- You confirm the **electrical compatibility** (voltage/current) with your application.

- You source it from a **reputable supplier** to avoid counterfeit units.

- Your system requires **adjustable pressure settings** (e.g., Ashcroft 2000 series).

- The pressure threshold is **higher than 10 PSI** (e.g., 20 PSI, 50 PSI, or higher).

- The environment involves **extreme conditions** (high heat, vibration, or corrosive media).

- You need **higher electrical ratings** (e.g., for motor starters or heavy loads).

For most **basic automotive or light-duty applications**, this switch will perform adequately with proper installation and usage. Always test the switch in the system before full deployment to ensure it meets operational requirements.

Details:

American Express. NPT Single Circuit, Pressure Switch, 10 PSI, Normally Open NO, 1/8 in.-27 Male Thread Connector, 2-Terminal, Brass/Plastic, Sold Individually Stewart Warner SW76576 Switch PSI Open, in. NPT Single Circuit Stewart Warner SW76576 Pressure Switch 10 PSI Normally Open, 1/8 in.

part #: msw76576 price

• $46.99

specifications boosttempgauges:

• for years: 2010
• brand: Stewart Warner
• mpn: M-sw76576
• part type: Pressure Switch
• country of origin: Chn
• upc: 792157765764

payments boosttempgauges:

• credit card: Diners-club
• wallet: Apple-pay
• other

offer boosttempgauges:

• quantity: 5
• sold: 0
• options: Ship-to-home
• started: April 30, 2026
• availability: In Stock

shipping boosttempgauges:

• type: Fixed
• cost: $15.99
• class: Standard
• transit: 5-8 Days
• service: Standard

seller boosttempgauges:

• # reviews: 627661
• rating: 99.4%
• city: , Ohio

general boosttempgauges:

• condition: New
• Interior Parts Accessories > Gauges > Individual Gauges

returns boosttempgauges:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

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