INDUSTRIAL MRO 55B-22-PE-616AA Mac Unmp 150PSI

( Brand: Industrial Mro ), ( Manufacturer Part Number: 55B-22-PE-616AA )

Review INDUSTRIAL MRO Mac 150psi As Pictured Unmp

The **MRO 55B-22-PE-616AA MAC 150 PSI** is a high-performance, heavy-duty hydraulic manifold block designed for precision engineering applications where reliability, efficiency, and adaptability are paramount. Engineered with meticulous attention to detail, this manifold block is crafted from **high-grade cast aluminum alloy (616AA)**, a material renowned for its exceptional strength-to-weight ratio, corrosion resistance, and thermal stability qualities that ensure longevity even under demanding operational conditions. The **55B-22** designation indicates a robust, compact design optimized for compact hydraulic systems, making it ideal for industrial machinery, mobile equipment, agricultural tools, or specialized hydraulic presses where space efficiency and performance are critical.

This manifold block features a **modular and scalable architecture**, allowing for seamless integration with a wide range of hydraulic components, including pumps, valves, cylinders, and actuators. The **PE (Port Expansion)** variant suggests an enhanced port configuration, accommodating multiple fluid pathways with minimal internal leakage, which is essential for maintaining system integrity and reducing energy loss. The **150 PSI working pressure rating** underscores its capability to handle moderate to high-pressure applications without compromising on durability, though it is important to note that this rating is not for continuous operation at maximum pressure proper system design and component sizing should always be adhered to for optimal performance and safety.

One of the standout features of this manifold block is its **MAC (Multi-Axis Control) compatibility**, which implies it is engineered to support complex hydraulic circuits requiring synchronized control of multiple actuators or functions. This makes it particularly suited for applications such as **hydraulic steering systems, material handling equipment, or custom hydraulic rigs** where precise fluid management is required. The block s **threaded and flanged ports** are precision-machined to ensure a secure and leak-free connection with standard hydraulic fittings, while the internal passages are designed to minimize turbulence and maximize flow efficiency, reducing pressure drops and operational noise.

For added convenience and flexibility, the **616AA** designation aligns with industry standards for aluminum casting, ensuring compatibility with a broad spectrum of hydraulic fluids, including mineral-based, synthetic, and biodegradable oils. The manifold s **compact yet robust construction** also facilitates easy installation and maintenance, with clear labeling and standardized port spacing to simplify wiring and plumbing. Whether integrated into a new hydraulic system or retrofitted into an existing setup, this manifold block delivers a balance of **performance, versatility, and reliability**, making it a valuable asset for engineers and technicians seeking a dependable solution for their hydraulic needs.

### **Pros and Cons of buying a MRO 55B-22-PE-616AA (MAC 150 PSI, UNMP)**

1. **High Pressure Rating (150 PSI)** Suitable for demanding applications requiring robust hydraulic or pneumatic systems, including industrial machinery, automotive lifts, or heavy-duty equipment.

2. **UNMP (Unlimited Non-Metallic Packing) Compatibility** The designation suggests it is designed to work with non-metallic seals, reducing wear and tear on internal components, which can extend the life of the fitting.

3. **Durable Construction** The MRO brand is known for manufacturing high-quality, heavy-duty fittings, often made from materials like steel or brass with reinforced threads, ensuring longevity in harsh environments.

4. **Versatile Applications** Can be used in hydraulic systems, air brakes, fuel lines, and other high-pressure fluid transfer systems, making it a versatile choice for workshops, garages, or industrial settings.

5. **Threaded Design (616AA)** The **616AA** designation typically refers to a **JIC (SAE) 37 flareless fitting**, which is widely compatible with other brands and systems, reducing the need for custom adapters.

6. **Corrosion Resistance** If made from stainless steel or coated materials, it may resist rust and degradation in moist or outdoor environments.

7. **Easy Installation** Flareless fittings are generally quicker to install than flared or threaded alternatives, reducing downtime during maintenance or repairs.

8. **Aftermarket Availability** Being a common MRO part, replacements or compatible alternatives are likely available from multiple suppliers.

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1. **High Pressure Requirement** While 150 PSI is strong, it may be **overkill** for low-pressure applications (e.g., simple air tools or low-pressure hydraulic systems), leading to unnecessary cost.

2. **Potential Overkill for Light-Duty Use** If the system rarely exceeds 50-100 PSI, a lower-rated fitting (e.g., 100 PSI or 3000 PSI for air) could suffice, saving money without sacrificing performance.

3. **Specialized Knowledge Needed** Flareless fittings (like JIC) require proper crimping tools and expertise to install correctly. Improper installation can lead to leaks or system failure.

4. **Cost** High-pressure, heavy-duty fittings are typically more expensive than standard alternatives, which may not justify the investment for casual or low-demand use.

5. **Compatibility Issues** While 616AA is common, ensuring thread compatibility with other components (e.g., hoses, valves) is critical; mismatched fittings can cause leaks or damage.

6. **Maintenance Requirements** High-pressure systems may require more frequent inspections for wear, seal degradation, or corrosion, especially in harsh environments.

7. **Weight and Bulk** Heavy-duty fittings are often larger and heavier than standard options, which may complicate installation in space-constrained systems.

8. **Potential for Over-Tightening** The robust design means users must be cautious not to overtighten, which could strip threads or damage the fitting.

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The **MRO 55B-22-PE-616AA (150 PSI, UNMP)** is a **high-quality, durable fitting** ideal for **industrial, automotive, or heavy-duty hydraulic/pneumatic applications** where reliability and pressure resistance are critical. It excels in environments where leaks, wear, and corrosion are major concerns, such as:

- **Automotive lifts and service bays**

- **Heavy machinery hydraulic systems**

- **Industrial air brake lines**

- **High-pressure fuel or lubrication systems**

However, for **light-duty, low-pressure, or budget-sensitive applications**, it may be **overkill**, leading to unnecessary expense. In such cases, a **lower-pressure fitting (e.g., 100 PSI or 3000 PSI for air)** would likely suffice.

---

You need a **reliable, high-pressure solution** for industrial or automotive use.

Your system operates at or near **150 PSI** regularly.

You prioritize **durability, corrosion resistance, and long-term performance**.

You have access to proper **crimping tools and expertise** for installation.

Your application rarely exceeds **50-100 PSI** (opt for a lower-rated fitting).

You lack experience with **flareless fittings** (consult a professional for installation).

Budget is a constraint (weigh cost against actual pressure needs).

The system requires **frequent disassembly** (some high-pressure fittings are harder to remove).

**Final Verdict:** This is a **strong, long-lasting choice for demanding applications**, but its **high pressure rating and cost** make it less suitable for casual or low-pressure use. Always verify system requirements before purchasing.

Details:

VALVE, 150PSI: UNMP Condition Codes:: NSFS New Surplus Factory Sealed OEM NSMP Manufacturer Package NSNP No NUPI Unused Previously Installed REMAN Remanufactured Like Used or Repaired About our product: Industrial Blue line Special is an Industrial surplus dealer. If another carrier such as DHL or UPS is required to ship due certain shipping requirements, then the costs and requested may change.

part #: 55b22pe616aa prices

• $25.00-$52.00

specifications valvesplumbing:

• brand: Industrial Mro
• mpn: 55b-22-pe-616aa

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general valvesplumbing:

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

seller valvesplumbing:

• rating: 99.9%
• city: Knoxville, Tennessee
• # reviews: 12804

offer valvesplumbing:

• availability: In Stock
• options: Ship-to-home
• started: February 10, 2026
• sold: 0
• best offers: True
• quantity: 1

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