
551174RP Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.99 | Condition is New – Open box, (Lot of 4) Taco Inc. 551-174 RP 551174RP Diaphragm Assembly, shipping cost = $11.35 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $3.91 | Condition is New, NEW Taco Replacement Diaphragm Assembly 551-174RP For 551-3/4 Zone Valve, shipping cost = $6.99 | 99.0% |
![]() | $35.00 | Condition is New, NEW Taco Replacement Diaphragm Assembly 551-174RP For 551-3/4 Zone Valve, shipping cost = $5.00 | 99.9% |

The TACO 551174RP is a high-performance, heavy-duty air suspension compressor diaphragm designed to deliver superior durability and reliability in demanding commercial and industrial applications. This diaphragm is a crucial component of the compressor system, responsible for separating the air and oil chambers to ensure efficient and effective operation.
Measuring 17.75 inches long and 8 inches wide, this diaphragm is engineered using a robust, reinforced rubber material that provides exceptional resistance to wear, tear, and damage. Its smooth, ribbed design enhances flexibility and durability, allowing for superior air flow and compressor performance.
The TACO 551174RP diaphragm also features a reinforced, double-ply construction that enhances its strength and ability to withstand heavy loads and high pressures. The double-ply design also provides improved insulation, reducing the transfer of heat between the air and oil chambers, which helps to promote longer compressor life and increased efficiency.
This diaphragm is designed to fit TACO compressors with part number 551-174, making it an ideal replacement option for those in need of a reliable, high-quality alternative to OEM parts. Its precision manufacture ensures a perfect fit and easy installation, reducing downtime and maintenance costs.
In summary, the TACO 551174RP is a top-tier air suspension compressor diaphragm that delivers superior durability, flexibility, and insulation, making it an excellent choice for commercial and industrial applications that require reliable, high-performance compressor components. Its robust design, smooth ribbed surface, and double-ply construction ensure long-lasting, efficient operation and help to minimize maintenance and downtime.
Pros and Cons of buying a Taco 551-174 RP Diaphragm
1. Pros:a. High-quality material: The Taco 551-174 RP diaphragm is made of durable and reliable materials, ensuring long-lasting performance.
b. Versatile application: This diaphragm can be used in various applications, including HVAC, refrigeration, and industrial processes.
c. Precise control: The diaphragm offers excellent control over fluid flow, ensuring accurate and efficient operation.
d. Easy installation: The Taco 551-174 RP diaphragm is easy to install, reducing labor costs and downtime.
e. Leak-free operation: The diaphragm's design minimizes the risk of leaks, ensuring consistent and reliable performance.
2. Cons:a. Higher cost: Compared to some other diaphragms in the market, the Taco 551-174 RP diaphragm may be more expensive.
b. Limited size options: The Taco 551-174 RP diaphragm is available in a limited range of sizes, so it may not be suitable for all applications.
c. Requires regular maintenance: Proper maintenance is essential to ensure the diaphragm's longevity and optimal performance.
Conclusion:The Taco 551-174 RP diaphragm is a high-quality, versatile, and reliable option for various applications. Its precise control over fluid flow, durability, and ease of installation make it an excellent choice for industrial and HVAC systems. However, its higher cost and limited size options may be a drawback for some users. Ultimately, the decision to purchase the Taco 551-174 RP diaphragm depends on the specific requirements of the application and the budget constraints.
Recommendation:If you require a high-performance, reliable, and durable diaphragm for your application and have the necessary budget, the Taco 551-174 RP diaphragm is an excellent choice. Its precise control over fluid flow and versatility make it a valuable investment for industrial and HVAC systems. However, if cost is a significant concern or if you require a larger size, you may want to explore other diaphragm options in the market. Proper research and consideration of your specific application requirements will help you make an informed decision.
Details:
All are unused. Some of these diaphragms are in boxes and some shrink-wrapping.
specifications maxohvac:
- brand: Taco
- mpn: 551174rp
shipping maxohvac:
- class: standard, expedited
- carrier: usps, ups
- transit: 3-8 days
- type: calculated
- service: usps first class, usps ground advantage, usps priority mail, ups 2nd day air
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: paypal
- other
- credit card: diners-club
returns maxohvac:
- policy: no returns
seller maxohvac:
- # reviews: 620
- city: columbia, pennsylvania
- rating: 100.0%
offer maxohvac:
- in stock #: 3
- sold #: 22
- started: march 5, 2025
- availability: in stock
- options: ship-to-home
- prices: $3.91–$35.00
- item condition:
- New – Open box
- New
- best offers: true


