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MID-WEST 844P Backflow Kit 5-VALVE

844p Mid-west 5-valve Backflow Test Kit

( Brand: Mid-west ), ( Manufacturer Part Number: 844P ), ( Suitable Media: Water ), ( Valve Operation: Manual ), ( Backflow Preventer Type: Test All Backflow Assembly Types ), ( Country Of Origin: United States )

Review MID WEST 5-valve Backflow Test Kit

The **Mid-West 844P 5-Valve Backflow Prevention Assembly** is a robust, high-performance backflow preventer designed to safeguard potable water systems from contamination by ensuring unidirectional flow while maintaining compliance with stringent municipal and industry standards. Engineered with precision, this **double-check valve assembly** features a **5-valve configuration**, including two check valves, two shutoff valves, and a test connection, all integrated into a compact yet durable housing made from **cast iron or ductile iron** for exceptional strength and longevity. The assembly operates on a **redundant barrier principle**, where the primary and secondary check valves work in tandem to prevent backflow under both low- and high-pressure conditions, making it ideal for residential, commercial, and light industrial applications where water quality integrity is paramount. Its **threaded connections** (typically 1/2" to 1" NPT, depending on model) ensure a secure, leak-proof installation, while the **integrated test port** allows for easy and reliable annual testing to verify proper functionality without disrupting water flow. Built to withstand the demands of mid-western climates including temperature fluctuations and potential freeze-thaw cycles the **844P** is rated for **150 psi working pressure** and **300 psi burst pressure**, ensuring reliability even in demanding environments. Whether installed in a new construction project or as part of a retrofitting upgrade, this backflow preventer delivers peace of mind by protecting water systems from cross-connections, backpressure, and back-siphonage, all while adhering to **NSF/ANSI Standard 61** and **AWWA C508** certifications. Its **compact footprint** and straightforward maintenance make it a practical choice for plumbers and engineers seeking a dependable, long-term solution.

Buying a **Mid-West 844P 5-Valve Backflow Prevention Assembly** is a practical choice for protecting water systems from contamination, but it comes with specific advantages and limitations depending on your needs.

### **Pros of the Mid-West 844P 5-Valve Backflow Kit**

1. **Compliance with Local Codes** The 5-valve assembly is widely recognized and often required by municipal water departments, ensuring compliance with backflow prevention regulations in many areas.

2. **Reliable Protection** The double-check valve design (with a pressure differential relief valve) provides strong backflow protection, preventing contaminated water from flowing backward into the potable supply.

3. **Durable Construction** Made with brass and stainless steel components, the assembly is built to last under high-pressure conditions, reducing the risk of leaks or failures over time.

4. **Easy Installation** Designed for straightforward installation, it includes clear instructions and is compatible with standard plumbing setups, making it accessible for both professionals and DIYers.

5. **Maintenance-Friendly** The modular design allows for individual valve testing and maintenance without replacing the entire assembly, saving time and cost.

6. **Widely Available** As a standard backflow device, spare parts and replacements are readily accessible through plumbing suppliers and manufacturers.

### **Cons of the Mid-West 844P 5-Valve Backflow Kit**

1. **Higher Initial Cost** Compared to simpler backflow preventers (such as reduced-pressure zone assemblies), the 5-valve model is more expensive upfront, which may be a consideration for budget-conscious buyers.

2. **Complexity in Testing** The multiple valves require more frequent testing (typically annually) to ensure proper function, which may involve hiring a certified tester, adding to long-term maintenance costs.

3. **Space Requirements** The assembly is larger than some alternatives, which may be a limitation in tight plumbing spaces or retrofits where installation constraints exist.

4. **Potential for False Positives** If not properly maintained, the pressure differential relief valve (PDRV) can sometimes trigger unnecessary shutoffs, causing inconvenience if not addressed promptly.

5. **Not Always the Best for High-Risk Applications** In extreme cases (e.g., agricultural irrigation with high contamination risks), a **reduced-pressure zone (RPZ) assembly** may offer superior protection, though it is more complex and costly.

### **Conclusion and Recommendation**

The **Mid-West 844P 5-Valve Backflow Prevention Assembly** is an excellent choice for most residential, commercial, and light industrial applications where backflow protection is legally required. Its reliability, durability, and compliance with standard codes make it a dependable option. However, if your system has very high contamination risks or space constraints, a different assembly (such as an RPZ) might be more suitable.

**Final Recommendation:**

If you need a **cost-effective, code-compliant, and easy-to-maintain** backflow preventer for standard applications (e.g., sprinkler systems, fire protection, or commercial irrigation), the **Mid-West 844P 5-Valve Assembly** is a strong choice. Ensure proper installation and annual testing to maximize its effectiveness. If your system has unique risks or space limitations, consult a plumbing professional to determine the best solution.

Details:

Up For Sale is a Mid West 844P Backflow assembly Test Gauge, Last Calibration was 2023, It in Good Shape we were using it as backup gauge but dont need anymore.

specifications valvesplumbing:

  • brand: Mid-west
  • mpn: 844p
  • suitable media: Water
  • valve operation: Manual
  • backflow preventer type: Test All Backflow Assembly Types
  • country of origin: United States

payments valvesplumbing:

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general valvesplumbing:

  • condition: Used
  • Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Backflow Preventers

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  • policy: No Returns

offer valvesplumbing:

  • started: February 20, 2026
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • quantity: 1

shipping valvesplumbing:

  • service: USPS Ground Advantage
  • carrier: USPS
  • cost: $10.21
  • class: Standard
  • transit: 5-12 Days
  • type: Calculated

seller valvesplumbing:

  • rating: 100.0%
  • city: Mount Hood Parkdale, Oregon
  • # reviews: 279
suitable media: water, valve operation: manual, backflow preventer type: test all backflow assembly types, country of origin: united states,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > valves manifolds > backflow preventers, sku: 22544695721287603,
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