API by-Pass Valve /Float Valve Sub

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: PTF105
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• OEM: Provide
• Alloy: 4145h
• Others: API and ISO
• Transport Package: Wooden Case
• Specification: FFJT241
• Trademark: KAIDI
• Origin: China
• HS Code: 8431431000

Product Description

During drilling operation, when a well kick takes place and bit bore is blocked, the by-pass valve can be opened to allow fluid circulation and well killing. Before drilling in a gas formation, the By-Pass valve shall be located near or on the bit.

When well kick take place and pump pressure is too high or blocked, the following
steps can be taken to open the By-Pass valve :
Discharge Kelly and drop in a steel ball (or a nylon ball) which is carried by tool;
Connect with Kelly;
Put ball into retainer by pump circulation;
 When fluid is closed, the shear pin can be sheared off by adding 0.5~1.5MPa higher pump pressure than original pump pressure;
After pin is sheared, the seal sleeve move down to open the discharge hole and pump pressure come to drop down , then normal circulation and well killing operation can be started.

By-pass valve
Model	OD(mm)	Seal Sleeve ID(mm)	Top Connecion Box	bottom Connection Pin	Punp pressure of shear-off sher pin	Steal ball (mm)	Length (mm)	weight (kg)
PTF105	105	32	NC31	NC31	3~10MPa	35	610	36
PTF114	114	38	3 1/2EUE	3 1/2EUE	3~10MPa	45	610	40
PTF121A	121	38	NC38	NC38	3~10MPa	45	610	44
PTF127	127	38	NC38	NC38	3~10MPa	45	610	51
PTF127C	127	38	NC38	NC38	3~10MPa	45	700	58
PTF159	159	49	NC46	NC46	3~10MPa	54	610	68
PTF159B	159	49	4-1/2REG	4 1/2REG	3~10MPa	54	610	68
PTF168	168	50.8	NC50	NC50	3~10MPa	57	610	73
PTF203	203	62	6 5/8REG	6 5/8REG	3~10MPa	65	610	125
PTF228	228	62	6 5/8REG	6 5/8REG	3~10MPa	65	610	125
PTF241	241	62	7 5/8REG	7 5/8REG	3~10MPa	65	700	181