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 | 2000PSI～20000PSI |
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 | AA,BB,CC,DD,EE,FF,HH |
Specification level | PSL1-4 |
Performance Requirement | PR1-2 |
Material details of the flow line check valve
Parts | Quantity | Material | |
1 | Valve body | 1 | AISI4135 |
2 | Valve clack | 1 | AISI4135 |
3 | Spring | 1 | 65Mn |
4 | Valve core | 1 | 2CuA19-4 |
5 | O-ring | 2 | NBR |
6 | Valve bonnet | 1 | AISI4135 |
7 | Valve bonnet bolt | 8 | AISI4135 |
8 | Valve bonnet nut | 8 | 40Cr |
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.
