SHANDONG SAIGAO GROUP CORPORATION
SHANDONG SAIGAO GROUP CORPORATION
Drop-in Check Valve

Drop-in Check Valve

Drop-in check valve is a inside blowout control valve. It can also be used for cutting drill pipe on all kinds of offshore drilling floating equipment. It has a landing sub, which connect the needed position of drill string and put into the well, in order to check valve assembly in place. Drop-in check valve is a kind of check valve, and check valve store on the platform, when the blowout signal is found, drop it Into drill pipe and pump down in place, When the high pressure flow upwelling, the check valve cuts off the high-pressure flow injected upward in the drill string, thereby achieving the purpose of blowout prevention.


Technical Specification of Drop-in Check Valve

Model

Valve Assembly OD

Landing Sub

Working Pressure

OAL

Connection

OD

ID

mm (inch)

mm (inch)

mm (inch)

MPa(PSI)

mm (ft)

FT 105

39(1-17/32)

104.8 (4-1/8)

40.5(1-19/32)


572(1.9)

NC31

FT121

51(2-1/64)

121 (4-3/4)

53(2-3/32)


794(2.6)

NC38

FT 127

52(2-1/16)

127 (5)

54 (2-1/8)


794(2.6)

NC38

FT159

68(2-11/16)

159 (6-1/4)

70(2-3/4)


867 (2.8)

NC46

FT 162

69(2-23/32)

162 (6 3/8)

71.4(2-13/16)

35 〜70

(5,000 〜10,000)

872(2.9)

NC50

FT 165

67(2-41/64)

165 (6-1/2)

69(2-23/32)


872(2.9)

NC50

FT 168

67(2-41/64)

168 (6 5/8)

69(2-23/32)


867 (2.8)

NC50

FT 190

78(3-5/64)

190 (7-1/2)

80(3-9/64)


906 (3)

5-1/2FH

FT203

74 (2-29/32)

203 (8)

76.2 (3)


883(2.9)

6-5/8FH


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