What is a Type R Check Valve?


Discover how Type R check valves are constructed to understand how they operate.

Type R check valves are unidirectional valves that are used to prevent backflow in high pressure environments during drilling and production. They can be found in kill lines on the Christmas tree or after the manifold.

In this blog post we’re explaining more about what Type R check valves do and how they are constructed. It’s a must-read if you use this type of valve out in the field.

Type R Check Valve Components

The Type R check valve features a stationary seat with a rubber seal as well as a spring energized poppet that seals when backflow is introduced. The internal components of a Type R check valve include:

  • Bonnet gasket
  • Seat
  • Seat Seal
  • Seat screw
  • Poppet
  • Poppet spring
  • O-ring or Packing

Type R Check Valve Sizes and Pressures

The Type R check valve comes in different sizes and pressure ratings. Sizes range from 1-1/16” to 4-1/16” with rated working pressures up to 15,000 PSI. The 5,000 PSI Type R check valve uses a flat steel bonnet gasket and the 10,000 to 15,000 PSI Type R check valves use a Viton rubber gasket with fabric reinforced outer diameter for increased durability.

Type R Check Valve Materials

Type R check valves come in regular trim and stainless-steel trim made of 410 or 316 stainless steel. The seat seal is made of HNBR (Hydrogenated Nitrile), or Viton if the check valve is being used in a harsher environment. When used in harsher environments, 718 Inconel is also available for several of the internal components. The seat, seat screw, and poppet come in 410 stainless steel but can be made with different materials if and when needed.

Ordering Type R Check Valves and Replacement Parts Online

Type R check valves are readily available at Heshka Oil. Our valves are manufactured to API 6A standards and go through a rigorous quality control process before being shipped. With Heshka Oil you can be sure you're getting the quality and reliability you need with our Type R check valves.

You can call one of our sales reps at 936-760-3453 for personal assistance or visit www.heshkaoil.com today to order your Type R check valve online.

Save Time and Money - Buy Type R Check Valves Online!

Want to know more about other Type R check valve parts? Read through the Heshka Oil blog for more oil and gas product overviews, guides and news. 

Posted On:

22nd Jun 2022