
594WA-21ST Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $25.00 | Condition is New, Superior Valve 3448KPA DP500PSIG 3/8" 250/06 1J-3006-D16F, shipping cost = $10.95 | 99.9% |
![]() | $110.00 | Condition is New, Superior 594WA-21ST Ball Valve Full Port 2 1/8" ODS DP700PSIG 4826Kpa NOS NIB, FREE SHIPPING | 99.9% |
![]() | $349.00 | Condition is New, NIB SUPERIOR 594WA-21ST BALL VALVE FULL 2 1/8" ODS DP500PSIG 3448KPa, shipping cost = $11.16 | 100.0% |
![]() | $400.00 | Condition is New, NIB SUPERIOR 594WA-21ST BALL VALVE FULL 2 1/8" ODS DP500PSIG 3448KPa, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $13.99 | Condition is New – Open box, NEW Superior Valve 3448KPA DP500PSIG *Free Shipping*, FREE SHIPPING | 99.7% |
![]() | $23.99 | Condition is New – Open box, NOS Superior Brass Valve 1/4 500 PSIG Diaphragm Packless Refrigerant Valve , FREE SHIPPING | ![]() |
![]() | $18.98 | Condition is New – Open box, SUPERIOR SERIES C CHECK VALVE DP 500 PSIG 3448 kPa 1/2" FITTING, shipping cost = $7.00 | 99.9% |
![]() | $26.77 | Condition is New – Open box, Superior DP500PSIG Valve, FREE SHIPPING | 99.9% |
![]() | $26.99 | Condition is New – Open box, Superior Valve DP500PSIG 1" Valve New (TBI), FREE SHIPPING | ![]() |
![]() | $29.95 | Condition is New – Open box, NEW OLD STOCK! SUPERIOR BRASS VALVE D.P.500PSIG, FREE SHIPPING | 100.0% |
![]() | $17.38 | Condition is New – Open box, Superior DP500PSIG 1/2" Solder Joint Refridgerant Valve, shipping cost = $17.06 | 99.8% |
![]() | $34.99 | Top Pick! Condition is New – Open box, Superior B13-720 DP500PSIG Refrigerant Valve, FREE SHIPPING | ![]() |
![]() | $25.00 | Condition is New – Open box, Superior Valve 3448 KPA DP 500 PSIG 013/85, shipping cost = $10.00 | ![]() |
![]() | $25.00 | Condition is New – Open box, Superior Valve 3448 KPA DP 500 PSIG D89/93, shipping cost = $10.00 | ![]() |
![]() | $180.00 | Condition is New – Open box, Superior Refrigeration Products 594WA21ST 2-1/8" Full Port WA Series, Welded, FREE SHIPPING | 100.0% |
![]() | $200.00 | Condition is New – Open box, SUPERIOR 594WA-21ST NSNP, FREE SHIPPING | 99.9% |
![]() | $220.00 | Condition is New – Open box, SUPERIOR DP500PSIG NSNP, FREE SHIPPING | 99.9% |
![]() | $399.00 | Condition is New – Open box, SUPERIOR 594WA-21ST 700PSI 2-1/8" NSMP, FREE SHIPPING | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $9.99 | Condition is Used, Superior Valve Shut Off DP500PSIG 1/4", FREE SHIPPING | 99.7% |
![]() | $16.50 | Condition is Used, Superior Dp 500 Psig (3448 Kpa), shipping cost = $10.00 | ![]() |
![]() | $89.86 | Top Pick! Condition is Used, SUPERIOR HVACR 594WA-21ST / 594WA21ST (USED), shipping cost = $12.90 | 99.7% |

The Superior 594WA-21st ball valve is a top-tier solution for applications requiring reliable and efficient fluid control. This ball valve, with a 1/8 inch nominal size and a pressure rating of 500 psi (3448 kPa) ANSI/ASME Class 150, is specifically designed to handle fluid pressure with precision and durability.
The 594WA-21st ball valve features a wafer body design that simplifies installation and reduces inventory requirements. Its compact size makes it ideal for use in confined spaces or applications where space is a premium. The ball valve's full port design provides maximum flow capacity, ensuring that fluid can be moved through the system efficiently.
The valve body is constructed from forged and machined 316L stainless steel, providing excellent strength, corrosion resistance, and durability. The ball and seat are made from PTFE (polytetrafluoroethylene), a high-performance material that offers exceptional wear resistance and low friction. The PTFE seats are also available in other materials such as NBR (nitrile), EPDM (ethylene propylene diene monomer), or PVC (polyvinyl chloride) to meet specific application requirements.
The 594WA-21st ball valve is equipped with a resilient seated design, which offers superior sealing performance even in high-pressure applications. The valve's stem features a double-offset design, which reduces stress on the seat and ball, ensuring long-lasting performance and minimal wear.
The ball valve is actuated by a lever, which can be operated manually or with a pneumatic or hydraulic actuator. The lever handle is available in various configurations, including 90-degree, 45-degree, and right-hand or left-hand operation, to accommodate different installation arrangements.
The Superior 594WA-21st ball valve is suitable for a wide range of applications, including water and wastewater treatment, oil and gas production, chemical processing, power generation, and food and beverage processing. The valve's high-quality materials, robust design, and reliable performance make it an excellent choice for any application where precise and efficient fluid control is essential.
The Superior 594WA-21st ball valve is a popular choice for applications requiring a 1/8 OD, DP 500psi/3448kPa pressure rating. Here are some pros and cons to help you make an informed decision about purchasing this valve:
Pros:1. Durable Construction: The Superior 594WA-21st ball valve is made from high-quality materials, including a forged body and trim, and a resilient seat. This ensures a long service life and reliability.
2. Leak-free Performance: The valve's triple-offset design provides a tight seal, minimizing the risk of leaks and reducing pressure drops.
3. Easy Maintenance: The valve's ball and seat are easily accessible, making it simple to maintain and repair.
4. Wide Range of Applications: The Superior 594WA-21st ball valve is suitable for various industries, including oil and gas, chemical processing, and water treatment.
Cons:1. Higher Cost: Compared to some other ball valve options, the Superior 594WA-21st ball valve may have a higher upfront cost due to its superior quality and features.
2. Limited Size Options: The valve is only available in a 1/8 OD size, which may not be suitable for all applications.
3. Requires Regular Maintenance: While the valve is designed for easy maintenance, it still requires regular checks to ensure optimal performance and prevent potential issues.
Ending Conclusion:The Superior 594WA-21st ball valve is a high-performance, reliable option for applications requiring a 1/8 OD, DP 500psi/3448kPa pressure rating. Its durable construction, leak-free performance, and ease of maintenance make it a worthwhile investment for industries that demand the highest levels of reliability and efficiency. However, its higher cost and limited size options may make it less suitable for some applications. Ultimately, the decision to purchase this valve depends on the specific requirements and budget of your project.
Recommendation:If you require a ball valve for an application that demands the highest levels of reliability, efficiency, and performance, the Superior 594WA-21st ball valve is an excellent choice. Its superior quality and features make it well worth the investment for industries such as oil and gas, chemical processing, and water treatment. However, if cost is a major concern or if you require a larger size, you may want to consider other ball valve options.
Details:
Brand new in box.
specifications maxohvac:
- brand: Superior
- mpn: 594wa-21st
- model: Dp500psig
- part type: Ball Valve
- unit quantity: 12
payments maxohvac:
- other
- credit card: discover
- wallet: paypal
shipping maxohvac:
- carrier: usps, ups
- transit: 6-13 days
- type: calculated
- service: usps ground advantage, ups ground
- class: standard
seller maxohvac:
- # reviews: 266
- rating: 100.0%
- city: bradenton, florida
offer maxohvac:
- sold #: 14
- started: december 24, 2025
- best offers: true
- options: ship-to-home
- in stock #: 5
- prices: $89.86–$400.00
- item condition:
- New
- New – Open box
- Used
- availability: in stock
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: no returns
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