
AR40K-N04E-Z Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $27.68 | Condition is New – Open box, SMC AR40K-N04E-Z / AR40KN04EZ (NEW NO BOX), shipping cost = $12.90 | 99.7% |
![]() | $31.91 | Condition is New – Open box, SMC AR40K-N04E-Z / AR40KN04EZ (NEW IN BOX), shipping cost = $12.90 | 99.7% |
![]() | $35.00 | Condition is New – Open box, SMC,AR40K-N04E-Z-B,REGULATOR NOS, shipping cost = $19.96 | 100.0% |
![]() | $36.95 | Condition is New – Open box, SMC AR40K-N04E-Z-B / AR40KN04EZB (NEW IN BOX), shipping cost = $36.22 | 99.3% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $24.00 | Condition is Used, SMC AR40K-N04E-Z Regulator 6566, shipping cost = $16.45 | 99.8% |
![]() | $23.00 | Condition is Used, SMC AR40K-N04E-Z Manual Pressure Regulator with Gauge, shipping cost = $18.15 | 100.0% |

The SMC AR40K-N04E-Z Regulator 6566 is a high-performance, precision adjustable pressure regulator designed for use in various industrial applications. This regulator is manufactured by SMC Corporation, a leading global supplier of pneumatic technology.
The AR40K-N04E-Z Regulator is a compact, single-acting, diaphragm-type regulator that offers precise pressure control. It comes with a 1/4 inch NPT connection inlet and outlet, making it suitable for use with standard compressed air lines. The regulator's body is made of brass, providing excellent durability and resistance to corrosion.
The regulator's operating pressure range is from 5 to 100 psi (0.35 to 6.9 bar), and it can deliver a maximum flow rate of 12.6 liters per minute (LPM) or 335.5 cubic feet per minute (CFM). It features a pressure adjustment range of 1 to 14 psi (0.07 to 0.97 bar), allowing for precise pressure control to meet specific application requirements.
The AR40K-N04E-Z Regulator is equipped with a built-in pressure gauge, which provides an accurate and easy-to-read indication of the regulator's output pressure. It also comes with an adjustment knob that allows for quick and easy pressure adjustments.
The regulator's diaphragm design ensures quiet operation, making it an excellent choice for applications where noise levels need to be kept low. It also features a bleed-down port that allows for easy purging of air from the regulator, reducing the risk of airlocks and improving system efficiency.
The SMC AR40K-N04E-Z Regulator 6566 is a reliable and versatile pressure regulator that offers precise pressure control, quiet operation, and easy maintenance. Its rugged construction, wide operating pressure range, and high flow capacity make it a popular choice for a variety of industrial applications.
The SMC AR40K-N04E-Z Regulator 6566 is a compact, high-performance regulator designed for use in various industrial applications. Here are some pros and cons that may help you make an informed decision about whether or not to purchase this regulator.
Pros:1. High Precision: This regulator offers precise pressure control with a maximum deviation of 0.25% of set pressure, making it suitable for applications where tight pressure control is essential.
2. Compact Design: With a compact footprint, this regulator saves valuable installation space in confined areas.
3. Wide Operating Range: The regulator can handle a wide range of pressures, from vacuum to 6500 psi, making it versatile for use in various industrial processes.
4. Reliable Performance: The regulator is built to withstand harsh industrial environments, ensuring reliable performance over an extended period.
5. Easy Installation: The regulator comes with a user-friendly design, making it easy to install and commission.
Cons:1. Cost: The SMC AR40K-N04E-Z Regulator 6566 is more expensive compared to some other regulators in the market with similar specifications.
2. Limited Flow Rates: This regulator may not be suitable for applications requiring high flow rates due to its compact design.
3. Requires Regular Maintenance: Like any other industrial component, this regulator requires regular maintenance to ensure optimal performance and longevity.
Conclusion:The SMC AR40K-N04E-Z Regulator 6566 is an excellent choice for applications that require precise pressure control in a compact design. Its wide operating range, reliable performance, and user-friendly installation make it a valuable addition to any industrial process. However, its high cost and limited flow rates may be a concern for some users. Ultimately, the decision to purchase this regulator depends on the specific requirements of your application and budget. If precise pressure control is a priority and space is limited, this regulator is an excellent investment. If cost or high flow rates are a concern, alternative options may be worth considering.
Details:
2-year MRI shield protection plan included. Pressure control type: relief valve. Smc AR40K-N04E-Z regulator manufactured by. Manufacturer part number: AR40K-N04E-Z.
Most items are in stock when they listed. Fluid compatibility: air. Special instructions. The product must be the original item shipped, with matching serial numbers if applicable.
Used - missing attachments. Thread standard: not. Smc AR40K-N04E-Z regulator modular air regulator with back flow function and pressure gauge.specifications series: ar mass pro.
specifications indusswitch:
- brand: Smc
- mpn: Ar40k-n04e-z
- part type: Regulator
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pressure Switches
shipping indusswitch:
- class: standard, one-day
- carrier: ups
- service: ups ground, ups next day air
- type: calculated
- transit: 2-6 days
payments indusswitch:
- credit card: discover
- wallet: paypal
- other
seller indusswitch:
- city: mount sterling, kentucky
- # reviews: 21484
- rating: 99.7%
returns indusswitch:
- time: 30 days
- policy: returns accepted
- method: money back
- paid by: buyer
offer indusswitch:
- options: ship-to-home
- best offers: true
- availability: in stock
- sold #: 14
- in stock #: 5
- started: february 25, 2026
- prices: $23.00–$36.95
- item condition:
- New – Open box
- Used
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