API 6A Wellhead Flow Line Check Valve 3" x 6000 psi

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Trade Term: FOB,CFR,EXW
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Basic Info.
  • Application: Wellhead connection 
  • Material: AISI4130 
  • Processing: Integral Forged 
  • Working pressure: 6000 psi 
  • End connection: flange end 
  • Standard: API 6A 
  • Size: 3" 
  • Performance Specification Level: PSL3 
  • Performance requirement: PR1 
  • Material Class: EE 
  • Model No.: Check Valve - 3" 
  • Place of Origin: Shaanxi  
  • Min.Order: 1 Set/Sets
  • Means of Transport: Ocean, Air, Land
Supply Capacity
  • Production Capacity: 30sets/month
  • Packing:plywood
  • Delivery Date: 20days

API 6A Wellhead Flow Line Check Valve 3" x 6000 psi

Wellhead Check Valve Flange End API 6A


Overview of the Flow Line Check Valve


The flow line check valve is a kind of  non-return valve. With the metal-to-metal seal by the pressure

grows, the flow line check valve has better the sealing function. The valve chamber can bear the

pressure of the pipeline anytime and prevent liquid backstreaming by self-closing baffle. The flow line

check valve is made of alloy steel and manufactured in full conformance with API-6A Standard, the

check valve is composed by valve body, valve deck, valve seat and valve rod.


Specification of the flow line check valve

Working Pressure


Nominal Bore

2.1/16"~4.1/16" (52mm~103mm)

Working Medium

oil,natural gas,mud and gas containing H2S,CO2

 Working Temperature

 -46°C~121°C(Class LU)

Material Class


Specification level


 Performance Requirement



Material details of the flow line check valve









  Valve body




  Valve clack








  Valve core








 Valve bonnet




Valve bonnet bolt




Valve bonnet nut












ZZ TOP is the experienced and expertized manufacturer for wellhead equipment, provides cost effective wellhead equipment in a wide range of pressure and sizes available to accommodate most casing sizes, which are designed complying with API-6A specification levels and performance requirements for land, platform drilling and completion applications, we also offer industry accepted primary and secondary seals, as well as tubing hangers with resilient or metal to metal seals.

The main products include  X-mas tree, Drilling manifold, Spacer spool, Riser Spool, Choke manifold, kill manifold, drilling spool, adapter spool,casing head, tubing head, DSA, integral fitting (swivel joint, Tee, Elbow etc) and other related gate valves & flanges.

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