Flapper Check Valve
 
The CT Flapper Check Valve is a safety component within a coiled tubing string. It provides one way flow to allow fluids, N₂, or CO₂ to be pumped through the coiled tubing while preventing well fluids from flowing back up the tubing string. A drop ball can pass through the Flapper Check Valve to operate tools below the valve. Dual flapper redundancy ensures a positive seal for safety. The Flapper Check Valve cartridges within the tool are available in two types of set/sealing arrangements depending on customer preference. Cartridges are available in a low pressure Teflon seal and high pressure metal-to-metal seal or a low pressure o-ring seal and high pressure metal-tometal seal.


 
Technical parameters:

O.D.	Makeup Length	Full Bore I.D.
1.250”	0.250”	0.406”
1.500”	10.250”	0.406”
1.687”	12.900”	0.687”
1.750”	12.900”	0.687”
2.000”	13.900”	0.687”
2.125”	13.900”	0.687”
2.250”	13.900”	1.125”
2.375”	13.900”	1.125”
3.125”	17.125”	1.312”

 
Features:
Large bore fluid passage
for balls, darts or plugs
Redundant seals for safety
17-4 PH flapper cartridge
construction for corrosion
resistance
Easy field servicing