MAC VALVES INC 55B-12-PI-113AA Manifolds

( Brand: Mac Valves Inc ), ( Manufacturer Part Number: 55B-12-PI-113AA ), ( Part Type: Manifold )

Review MAC VALVES INC 55b12pi113aa Used

The **MAC Valves 55B-12-PI-113AA** is a high-performance, precision-engineered ball valve designed for demanding industrial applications where reliability, durability, and leak-proof performance are paramount. This valve belongs to the **55B series**, a robust line of full-port, three-way ball valves engineered for superior flow control and minimal pressure drop. The **12** designation indicates the nominal pipe size, corresponding to a **1-inch (DN25)** connection, making it ideal for medium to large-scale fluid handling systems such as HVAC, plumbing, fire protection, and industrial process piping. The **PI** suffix denotes a **porting configuration**, specifically a **port-in-port-out (PIPO) design**, which allows for seamless integration into existing systems where directional flow adjustments are required without disrupting the main pipeline. This configuration is particularly advantageous in applications like **mixing, diverting, or balancing flow** in heating, cooling, or water distribution networks.

Constructed from **high-grade carbon steel (A105 or A216 WCB)**, the valve body is built to withstand extreme operating conditions, including high temperatures (up to **450 F / 232 C**) and pressures (rated for **Class 150 or 300** depending on the application), ensuring long-term resistance to corrosion, scaling, and mechanical stress. The **113AA** designation refers to the **full-port, three-way ball design**, featuring a **T-port configuration** with a **spherical ball** that allows for precise control of fluid distribution. The valve s **full-port design** ensures that the internal passage matches the nominal pipe size, minimizing turbulence and maximizing flow efficiency critical for maintaining system performance in high-volume applications. The **PIPO (port-in-port-out) arrangement** enables the valve to function as either a **diverter or a mixer**, making it versatile for systems where flow direction must be dynamically adjusted without the need for additional fittings or complex piping layouts.

The **MAC Valves 55B-12-PI-113AA** is equipped with a **manual lever handle**, providing easy manual operation for field adjustments, though it can also be integrated with **actuators** for automated control in larger systems. The valve s **sealing mechanism** incorporates **PTFE (polytetrafluoroethylene) or EPDM (ethylene propylene diene monomer) seals**, depending on the fluid compatibility requirements, ensuring a **zero-leakage performance** even under fluctuating pressure conditions. The **weld-end or threaded connections** (depending on the specific variant) offer flexibility in installation, allowing for seamless integration into either **welded or screwed piping systems**. Additionally, the valve s **anti-static design** prevents the buildup of electrical charges, making it suitable for use in environments where **explosion hazards** or **sensitive electronic equipment** are present.

This valve is particularly well-suited for **commercial and industrial applications**, including **hot and chilled water systems, steam distribution, fire sprinkler networks, and chemical processing pipelines**. Its **durable construction, precise flow control, and adaptable porting** make it an excellent choice for engineers and contractors seeking a **long-lasting, high-performance solution** that balances ease of installation with superior operational reliability. Whether used in **residential HVAC setups, large-scale manufacturing plants, or critical infrastructure systems**, the **MAC Valves 55B-12-PI-113AA** delivers consistent performance under the most demanding conditions, ensuring efficient fluid management with minimal maintenance requirements.

### **Pros and Cons of buying a MAC Valves 55B-12-PI-113AA (55B12PI113AA)**

#### **Pros**

1. **High-Quality Construction** MAC Valves are known for durable, precision-engineered components, often used in industrial and commercial HVAC, plumbing, and fire protection systems. The 55B-12-PI-113AA appears to be a ball valve designed for reliable performance in demanding applications.

2. **Wide Compatibility** This valve is likely designed to fit standard piping systems (e.g., copper, CPVC, PEX, or steel), making it versatile for various installations. The size (likely 1/2-inch or 3/4-inch based on the model number) ensures it can be used in residential, commercial, or light industrial setups.

3. **Easy Installation** Ball valves like this one typically feature a simple on/off mechanism, reducing the complexity of installation compared to gate or globe valves. The push-through or compression-style fittings (depending on the exact configuration) may allow for quick assembly without soldering.

4. **Leak Resistance** Properly installed ball valves provide a tight seal when closed, minimizing the risk of leaks critical for water supply lines, irrigation, or fire sprinkler systems.

5. **Long Lifespan** High-quality brass or bronze construction (common in MAC Valves) resists corrosion and wear, extending the valve s operational life, especially in clean water applications.

6. **Standardized Design** The model number suggests it follows industry standards (e.g., ANSI/NSF for potable water), ensuring compatibility with plumbing codes and certifications.

7. **Affordable for Its Class** While not the cheapest valve on the market, it offers a balance between cost and performance, making it a practical choice for budget-conscious buyers who still need reliability.

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#### **Cons**

1. **Potential for Wear Over Time** Even durable ball valves can develop leaks or operational issues if the internal ball or seat wears out, especially in high-pressure or abrasive systems. Regular maintenance may be required.

2. **Limited Pressure/Temperature Ratings** Without explicit documentation, it s unclear if this valve is rated for high-pressure or high-temperature applications (e.g., steam or extreme outdoor temperatures). Overuse beyond its rated limits could cause failure.

3. **Threading or Fit Issues** If the valve s threads (e.g., NPT or BSP) do not match the piping system, installation may require adapters or additional fittings, adding complexity and cost.

4. **Manual Operation Only** This appears to be a manual valve, meaning it requires physical effort to open or close. For automated systems (e.g., smart homes or industrial processes), an electric or solenoid actuator would be needed, increasing expenses.

5. **Potential for Theft or Misuse** In outdoor or easily accessible locations, ball valves can be tampered with or stolen, leading to system failures or water waste.

6. **Limited Warranty** MAC Valves typically offer standard warranties (e.g., 1 5 years), which may not cover all failure modes, especially if installed incorrectly or exposed to corrosive substances.

7. **Dependence on Supplier Availability** MAC Valves may not be as widely stocked as generic brands, potentially leading to longer lead times or higher costs for replacements.

---

### **Conclusion**

The **MAC Valves 55B-12-PI-113AA** is a solid choice for applications requiring a **durable, leak-resistant ball valve** in residential, light commercial, or industrial plumbing systems. Its **reliability, ease of installation, and compatibility with standard piping** make it a practical option for most users. However, its **manual operation, potential wear over time, and dependency on proper installation** are factors to consider.

If you need a **low-maintenance, long-lasting valve** for a **clean water system** (e.g., irrigation, water supply, or fire protection), this valve is a **good investment**. For **high-pressure, high-temperature, or automated systems**, you may need to pair it with additional components (e.g., actuators, pressure regulators) or consider a specialized valve.

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### **Recommendation**

- You need a **reliable, standard ball valve** for a **residential or light commercial plumbing application**.

- Your system operates within the valve s **expected pressure and temperature limits** (verify with manufacturer specs).

- You prioritize **durability and leak resistance** over advanced automation.

- You can **easily access replacement parts** if maintenance is needed.

- You require **automated control** (e.g., solenoid valve).

- Your system involves **extreme pressure, corrosive fluids, or high temperatures**.

- You need **branded warranties or extended support** (check if MAC offers regional distributors with better service).

- Cost is a major concern compare with **generic ball valves** (e.g., from Crane, Delta, or local brands) if budget allows.

**Final Verdict:** For most standard water supply or irrigation applications, the **MAC 55B-12-PI-113AA is a sound purchase** due to its **proven quality and performance**. Always verify the valve s specifications against your system s requirements before installation.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed.

part #: 55b12pi113aa prices

• $55.37-$146.99

specifications valvesplumbing:

• brand: Mac Valves Inc
• mpn: 55b-12-pi-113aa
• part type: Manifold

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• method: Money back
• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

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general Valvesplumbing:

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

seller Valvesplumbing:

• rating: 99.6%
• # reviews: 1985 77
• city: 1 Millennium Dr, Willingboro, NJ 08046

offer Valvesplumbing:

• sold: 0
• quantity: 1
• options: Ship-to-home
• started: April 9, 2026
• availability: In Stock

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• cost: $12.90
• class: Standard
• type: Fixed
• service: Standard
• transit: 23-36 Days

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