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Description
SAP-KN31000 PRESSURE PROTECTION VALVE W/ 1/4 PORTS W/O BACKFLOWTechnical Specifications Part Type Double Check Valve (Air Brake System) Part Number (SAP) SAP KN31000 Port Size 3 ports 1 4" NPT Max. Operating Pressure 150 PSI Material Brass body with internal check mechanism Key Features Prevents backflow from two air sources, compact design, direct OEM replacement Cross References Brand Part Number SAP SAP KN31000 Haldex KN31000 Fortpro Prima F224719, ATV KN31000 Automann 170. KN31000 World American WA KN31000
Technical Specifications
| Part Type | Double Check Valve (Air Brake System) |
| Part Number (SAP) | SAP-KN31000 |
| Port Size | 3 ports - 1/4" NPT |
| Max. Operating Pressure | 150 PSI |
| Material | Brass body with internal check mechanism |
| Key Features | Prevents backflow from two air sources, compact design, direct OEM replacement |
Cross References
| Brand | Part Number |
|---|---|
| SAP | SAP-KN31000 |
| Haldex | KN31000 |
| Fortpro / Prima | F224719, ATV-KN31000 |
| Automann | 170.KN31000 |
| World American | WA-KN31000 |
| Bendix / Aftermarket | SC-1 style equivalents |
Equipment / Vehicle Applications
| Make | Model | Model Years | Notes |
|---|---|---|---|
| FREIGHTLINER | Cascadia (113/125) | 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake system double check valve |
| Columbia (CL112/120) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 | • Air brake check valve | |
| Coronado (CC122/132) | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 | • Air brake system | |
| Classic / FLD Series | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 | • Air brake double check valve | |
| Century Class / Argosy | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 | • Air brake system | |
| KENWORTH | T680 / T880 | 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake double check valve |
| T800 / T600 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake system | |
| W900 / W900B | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake double check valve | |
| K100 / K500 | 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 | • Air brake system | |
| PETERBILT | 389 / 388 / 387 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake double check valve |
| 579 / 567 | 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Air brake system | |
| 379 / 378 / 377 | 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | • Air brake double check valve |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Came quickly as described!
The Grinders are very well made. I keep them right next to the stove, so they are used daily. The came quickly. Very easy to fill...
You wont be disappointed !
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Small and perfect
This salt and pepper grinder set are perfect for what I wanted. They are small in size, easy to fill and grind the S&P perfectly.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Great Value!
Color: Tall Set - Black White
Better than anticipated. These are sturdy and work very well. They came with a little funnel to fill, but easy enough without it. They are attractive, I keep on top my stove as I have room. Grind well.
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Reviewed in the United States on December 31, 2025
★★★★★ 3
Defective coarseness adjuster
Color: Tall Set - Black White
These salt and pepper shakers are ok. According to the description of the product, you should be able to adjust the coarseness of the salt and pepper added to them, but that was not my case. The coarseness adjuster on the set I received is set to one position and there is no way of changing it. The grinders work well, but if you are looking to adjust the coarseness of your salt and/or pepper look for another grinder set.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Loved it!
Model: 2 Pack Salt and Pepper Grinder, Model: 2 Pack Salt and Pepper Grinder
I loved it! The grinders look very elegant and work perfectly. The size is great, they’re easy to use, and the grinding is smooth. They also feel sturdy and good quality. Definitely recommend!
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Reviewed in the United States on March 19, 2026