What is a Type H Back Pressure Valve?
The Heshka Oil type H back pressure valve (BPV) is a one-way check valve for oil and gas operation that’s also known as a non-return valve (NRV).A back pressure valve type H is used to safely seal the tubing pressure while the blowout preventer is removed and the wellhead tree is installed. The BPV also allows for fluid to be circulated down the tubing and prevents back flow.
The outer diameter (OD) threading on these valves provide strength for extreme pressures without significantly reducing the tubing hanger bore size.
Type H Back Pressure Valve Components
The type H Back Pressure Valve is made up of 5 components:
- OD seal
The stem and piston are usually made of a stainless steel material. The piston also has a seal molded to allow for the piston to seal against the body of the valve. The spring runs over the stem and is made from Inconel. The last component is the OD Seal which sits just beneath the threading and is made from either HNBR or Viton material, depending on the requirements specified by the customer.
Sizes and Materials
Our type H back pressure valve is available in multiple sizes and materials:
1-1/2" through 6" valves in stock
4130 alloy can be used for API 6A material class DD
410 stainless steel can be used for API 6A material class DD, EE or FF Sour Service
17-4 PH stainless steel can be used for API 6A material class DD, EE or FF Sour Service
Inconel 718 can be used for API 6A material class HH Sour Service
The assembly of a type H back pressure valve is simple and easy to follow.
- First you will need your back-pressure valve body.
- Take your spring and slide it over the stem.
- Place the stem through the top hole of the back-pressure valve and push it through the bottom hole and hold the stem with the spring compressed.
- Insert the piston with the seal facing towards the bottom threads of the valve.
- Release the stem into the hole of the piston.
- Lastly, insert the O.D. seal into the groove below the threading.
When assembly is required quality and reliability are even more important. Get the assurance of working with an API 6A valves manufacturer when you order a Type HP one way check valve for 20,000 PSI online at HeshkaOil.com.
Save Time and Money - Buy a Type HP One Way Check Valve for 20,000 PSI Online!
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