JOHNSON CONTROLS P100AP-3C Vac Single Pressure Control P100AP-85 240

( Brand: Johnson Controls ), ( Manufacturer Part Number: P100AP-3C ), ( Type: Single Pressure Control ), ( Grainger Number: 40g318 )

Review JOHNSON CONTROLS 240 Vac Single Pressure Control

The **Johnson P100AP-3C** and **P100AP-85** are high-performance, single-phase, pressure control valves designed for demanding industrial and commercial applications where precise and reliable pressure regulation is essential. Part of Johnson Controls robust **P100** series, these valves are engineered to maintain consistent pressure levels in HVAC systems, chilled water loops, boiler circuits, and other fluid-handling processes where stability and efficiency are critical. Built with a **240VAC** electrical control system, these valves feature a **3-way or 85% port configuration** (depending on the model), allowing for seamless integration into existing piping systems while optimizing flow dynamics. The **P100AP-3C** incorporates a **3-way mixing or diverter valve design**, ideal for applications requiring precise modulation of flow rates, such as in heat recovery systems or variable flow control scenarios. Meanwhile, the **P100AP-85** leverages an **85% port size**, maximizing flow capacity while maintaining tight pressure regulation, making it well-suited for larger-scale installations where efficiency and reduced energy consumption are priorities.

Constructed from high-quality materials, including **cast bronze or stainless steel bodies**, these valves are built to withstand harsh environmental conditions, including exposure to corrosive fluids, temperature fluctuations, and high-pressure differentials. The **actuator mechanism** is designed for smooth, silent operation, with a **fail-safe position** (either open or closed, configurable based on application needs) to ensure system reliability even in the event of power loss. The **modulating control** is achieved through a **proportional-integral-derivative (PID) algorithm**, allowing for precise adjustments to maintain setpoint pressures with minimal overshoot or hunting, thereby enhancing overall system performance and energy efficiency. These valves are compatible with **Johnson Controls Metasys, IntelliVue, or other building automation systems (BAS)**, enabling seamless integration into smart building infrastructure for remote monitoring, diagnostics, and automated control.

Whether deployed in **commercial buildings, data centers, hospitals, or industrial facilities**, the **P100AP-3C** and **P100AP-85** deliver exceptional durability, energy savings, and operational flexibility. Their **low-maintenance design** reduces downtime, while the **long lifespan** of the valve components ensures cost-effective performance over decades of service. With a focus on **energy efficiency and precise pressure control**, these valves help optimize HVAC systems, reduce operational costs, and enhance comfort and safety for occupants. Ideal for both new installations and retrofits, the **P100AP series** represents a reliable choice for engineers and facility managers seeking high-performance, low-maintenance pressure regulation solutions.

### **Pros and Cons of buying a Johnson P100AP-3C and P100AP-85 (240VAC Single-Pressure Control) Air Compressors**

#### **Overview**

The **Johnson P100AP-3C** and **P100AP-85** are mid-sized, single-stage, oil-free air compressors designed for industrial, commercial, and workshop applications. They operate on **240VAC** and feature **single-pressure control**, meaning they cycle on and off to maintain a set pressure rather than using continuous duty. Below is a detailed breakdown of their advantages and disadvantages.

---

### **Pros**

1. **Reliable and Durable Construction**

- Built with **heavy-duty materials**, including cast iron or steel components, ensuring longevity in demanding environments.

- The **oil-free design** reduces maintenance needs compared to lubricated compressors, making them ideal for applications where oil contamination is a concern (e.g., food processing, medical, or cleanroom settings).

2. **Energy Efficiency**

- Single-pressure control systems **cycle on and off** rather than running continuously, which helps reduce energy consumption when full pressure isn t needed.

- The **P100AP series** is designed to be **quiet and efficient** for its class, making it suitable for workshops or office environments where noise levels matter.

3. **Versatile Applications**

- Suitable for **pneumatic tools** (impact wrenches, nail guns, spray guns), **air-operated machinery**, **inflation tasks**, and **light industrial use**.

- The **3-gallon (P100AP-3C) and 8.5-gallon (P100AP-85) tanks** provide sufficient air storage for moderate workloads without excessive pressure drops.

4. **Low Maintenance Requirements**

- **No oil changes** needed (unlike positive-displacement compressors), reducing downtime and maintenance costs.

- Basic maintenance typically involves **filter replacements** and **periodic inspections** of belts, valves, and seals.

5. **Compact and Portable (Relative to Size Class)**

- While not ultra-portable, these units are **larger than small shop compressors** but more manageable than heavy-duty industrial models.

- The **P100AP-85** is slightly larger but still **easier to relocate** than larger reciprocating compressors.

6. **Good Pressure Regulation**

- The **single-pressure control** ensures consistent output, preventing over-pressurization that could damage tools or equipment.

- Adjustable pressure settings allow users to optimize performance for different tasks.

7. **Quiet Operation (Compared to Similar Models)**

- Johnson compressors are generally **quieter than many reciprocating competitors**, making them better suited for shared workspaces.

8. **Warranty and Support**

- Johnson is a **well-established brand** with **decent warranty coverage** (typically 1 2 years on parts, longer on the motor).

- Access to **aftermarket support and replacement parts** is relatively easy, though not as extensive as some larger manufacturers.

---

### **Cons**

1. **Limited Continuous Duty Capacity**

- These are **not continuous-duty compressors** they are designed for **intermittent use** with cooling periods between cycles.

- **Prolonged heavy use** (e.g., running tools continuously) can lead to **overheating and reduced lifespan**.

- The **P100AP-3C (3-gallon tank)** is better for **light to moderate use**, while the **P100AP-85 (8.5-gallon tank)** handles slightly heavier loads but still has limits.

2. **Lower CFM Output for Heavy-Duty Work**

- The **actual CFM (cubic feet per minute) delivery** is lower than advertised (due to pressure drop and cycling), which may be insufficient for **high-demand applications** (e.g., running multiple air tools simultaneously).

- Users may need to **run the compressor continuously** for sustained use, which reduces efficiency and increases wear.

3. **Single-Stage Design Limitations**

- **Single-stage compressors** (like these) **cannot reach very high pressures** (typically maxing out around **150 PSI**), which may be limiting for specialized applications.

- If you need **higher pressure or more consistent flow**, a **two-stage or screw compressor** would be a better choice.

4. **Noise Levels Still Present**

- While quieter than many reciprocating compressors, they are **not silent** expect **70 85 dB** during operation, which may be noticeable in quiet environments.

5. **Higher Upfront Cost Than Basic Models**

- Compared to **small, basic shop compressors** (e.g., 2 6-gallon units), these are **more expensive**, but they offer better durability and performance.

- However, they are **not as cost-effective as larger, high-efficiency industrial compressors** for heavy-duty, continuous use.

6. **Maintenance Still Required**

- While oil-free, **filters, belts, and seals** will eventually wear out and need replacement.

- **Condensation drainage** must be managed to prevent rust in the tank, especially in humid environments.

7. **Limited Mobility**

- Due to their **size and weight**, these compressors are **not easily movable** between locations.

- The **P100AP-85** is particularly heavy, requiring **two-person handling** for relocation.

8. **Potential for Pressure Fluctuations**

- Single-pressure control systems can cause **minor pressure drops** during tool use, leading to **intermittent slowdowns** if the tank isn t large enough for the workload.

---

### **Conclusion**

The **Johnson P100AP-3C and P100AP-85** are **solid mid-range air compressors** that excel in **moderate-duty, intermittent-use applications** where **durability, oil-free operation, and reasonable efficiency** are priorities. They are well-suited for:

- **Small workshops**

- **Commercial kitchens** (for air knives, blow guns)

- **Light industrial settings** (assembly lines, inflation tasks)

- **Home garages** (with moderate tool use)

However, they **struggle with continuous heavy-duty use**, high-pressure needs, or applications requiring **consistent, high CFM output**. If your requirements exceed their capabilities, a **larger reciprocating compressor, screw compressor, or oil-lubricated model** may be a better investment.

---

### **Recommendation**

You need a **reliable, oil-free compressor** for **moderate air tool use** (e.g., impact wrenches, spray guns).

Your workload is **intermittent**, not continuous (e.g., occasional use in a workshop or commercial setting).

You prefer **low maintenance** and **quiet operation** compared to basic shop compressors.

You require **240VAC power** and need a **single-pressure control** system for safety and efficiency.

You need **continuous duty** (e.g., running tools 24/7).

Your application requires **high CFM or high-pressure output** (e.g., large pneumatic systems).

You want **ultra-portability** (smaller compressors may suffice).

You re on a **tight budget** (basic 2 6-gallon compressors are cheaper but less durable).

- **For light to moderate use (e.g., home garage, small shop):** **P100AP-3C** (3-gallon tank) is sufficient.

- **For heavier intermittent use (e.g., commercial kitchen, workshop):** **P100AP-85** (8.5-gallon tank) offers better capacity.

- **For continuous or high-demand use:** Upgrade to a **larger reciprocating compressor (e.g., 20 60 CFM) or a screw compressor**.

The **Johnson P100AP series** is a **good mid-tier choice** for users who prioritize **durability, oil-free operation, and efficiency in moderate applications**. While not the best for extreme use, they provide **reliable performance** for their price point and are a **strong alternative to basic shop compressors**. If your needs align with intermittent, moderate-duty air compression, these are a **solid purchase**. Otherwise, consider a more specialized compressor for your specific workload.

Details:

Though used, item is fully operational. Condition is used. May have minor blemishes. Application: Commonly used in HVAC and refrigeration systems to manage monitor pressure levels.

Wire is snipped. This item is a Johnson Controls P100AP - 85 encapsulated pressure switch.

part #: p100ap3c prices

• $15.26-$82.60

specifications hvaapa:

• brand: Johnson Controls
• mpn: P100ap-3c
• type: Single Pressure Control
• grainger number: 40g318

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• condition: Used
• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards

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