Drop-in Check Valves, drilling tools

  Product Description     Drop-in check valve is an internal prevener. When blowout is going to happen, the Kelly should be removed immediately and the check pressure valve assembly should be put into the water hole and then pumped downward to the required place. Thus the blowout can be prevented. The valve body connect on the drilling stem. Drop-in check valve is ball and seat of heavy duty, if only drop in the valve core at the mouth of the well, it turn into the valve body.    Specifications     Specification

Type	Check assembly		Sub Body			Mpa	Conn.API
	O.D  (mm)	I.D.  (mm)	O.D  (mm)	I.D.  (mm)	Length  (mm)
FT86	35	10	86	37	335	35 (70)	NC26
FT105	38	12	105	40	350		NC31
FT121	50	20	121	52	395		NC38
FT152	54	24	152	56	410		NC46
FT159	65	35	159	67	435		NC50
FT159	68	35	159	70	435		NC50
FT165	68	35	165	70	435		NC50
FT178	76	43	178	78	515		NC50
FT203	76	43	203	78	620		6 5/8"REG
FT229	76	43	229	78	620		7 5/8"REG