Float Valve & Float Valve Subs

Float valve is one of necessary tool for oil drilling,it consists of float valve sub and float valve.The main function are to prevent drill cuttings come into mud when connecting each joint and the bit bore block caused by back flow of silt.When the well blowout or kick,the valve cover of float valve turn off the bore automatically.it will prevent well blowout accident.The working pressure of float valve is supposed to be 5000psi or 10000psi

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Float Valve Subs Specification

Model	OD mm(inch)	ID mm(inch)	Conn.	Float Valve Type
FZF83	82.6(31/4)	31.8(1 1/4)	NC23B×2 3/8REG B	1R
FZF105	104.8(4 1/8)	31.8(1 1/4)	NC31 Bx2 7/8REG B	1F-2R
FZF127	127(5)	50.8(2)	3 1/2REG Bx NC38 B	2F-3R
FZF178	178(7)	71.4(2 13/16)	4 1/2REG Bx NC50 B	4R
FZF165	165(6 1/2)	71.4(2 13/16)	NC50(BxP)	5R
FZF203	203(8)	71.4(2 13/16)	6 5/8REG B x 6 5/8REG B	5F-6R
FZF229FZF241	229(9)/241(9 1/2)	76.2(3)	7 5/8REG Bx7 5/8REG B	5F-6R

Float Valve Specification

Model	OD mm(inch)	OAL mm(inch)	ID.mm(inch)	Box Conn.		Other Conn.
				Conn.	Bore Depth mm(inch)	Conn.	Bore Depth mm(inch)
1R	42.1(1 21/32)	149.2(5 7/8)	42.9(1 11/16))	2 3/8REG	231.8(9 1/8)	NC23	231.8(9 1/8)
1F-2R	48.42(1 29/32	158.8(6 1/4)	49.21(1 15/16)	2 7/8REG	254(10)	NC26	241.3(9 1/2)
2F-3R	61.1(2 13/32)	165.1(6 1/2)	61.9(2 7/16)	3 1/2REG	266.7(10 1/2)	NC31	260.35(10 1/4)
3F	71.44(2 13/16)	254(10)	72.23(2 27/32)			31/2FH	355.6(14)
3 1/2F	79.4(3 1/8)	254(10)	80.2(3 5/32)			NC38	362 (14 1/4)
4R	88.1(3 15/32)	211.1(8 5/16)	88.9(3 1/2)	4 1/2REG	325.4(12 13/16)	NC44	331.8(13 1/16)
4F	92.87(3 21/32)	304.8(12)	93.66(3 11/16)			NC46	425.4(16 3/4)
5R	98.4(3 7/8)	247.7(9 3/4)	99.2(3 29/32)	5 1/2REG	374.7(14 3/4)	NC50	368.3(14 1/2)
5F-6R	121.4(4 25/32)	298.5(11 3/4)	122.2(4 13/16)	7 5/8REG	438.2(17 1/4)	51/2FH	431.8(17)