? ? ? ? ??Cangzhou?Lockheed?Drilling?Equipment?Parts?Co.,Ltd ? ? ? 1.Profile?of?company ? ? Established?in?1998,?Cangzhou?Lockheed?Drilling?Equipment?Parts?Co.,?Ltd.?is?a?professional?technology-oriented?enterprise?specialized?in?the?production?drilling?equipments?and?tools,which?is?one?of?the?leading?corporations?of?drilling?tools?and?workover?fishing?tool?manufacturing?industry.?Including?three?series?with?full?model?types,as?follows: ?? Drilling?Bit?series:?rock?roller?bit,tricone?bit,pdc?drill?bit,single?bit,cone?bit?and?hole?opener;? ? Drilling?Equipment?Parts?series:?manual?tong,elevator,slips,stabilizer; ?? Workover?Fishing?Tool?series:?releasing?spear,junk?basket,?overshot,reversing?sub,die?collar,?fishing?tap?etc. ? Welcome to visit our factory!!! ? ? ? 2.Product?detail ? sub float valves/float valve sub ? ? This?Float?Valve?is?normally?installed?in?a?standard?bore-back?of?the?bit?sub,?to?provide?fluid?flow?control?at?the?bottom?of?the?drill?stem.?It?also?prevents?backflow?of?cuttings?from?plugging?the?drill?bit?jets?while?making?connections?. ? Specification ? ?

Type	Dia.?of?Valve?Assembly mm(inch)	Length?Of?Valve?Assembly mm(inch)	Dia.?Of?Float?Recess mm(inch)	Sub?Box		Other?Popular?Connections
				Connection API	Depth?Of?Recess? mm(inch)	Connection API	Depth?Of?Recess 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)
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)
3-1/2?F	79.4(3-1/8)	254(10)	80.2(3-5/32)	?	?	NC38	362.0(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)
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)	6-5/8Reg..	431(17)	5-1/2IF	431.8(17)

? 3.Product?show ? ? 4.Other?drilling?equipment?show ? 5.Packing?and?transportation ? ? 6.Welcome?to?contact?me at any time!!! ? Your?satisfaction?is?our?mission!!! ? ? ? ? ? ? ? ?