API Upper and Lower Kelly Valves/Kelly Cock for Drill Pipe

• After-sales Service: Yes
• Warranty: 1 Year
• Manufacturing Process: Casting
• Surface Treatment: Galvanized
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Model NO.: Kelly Cock
• Transport Package: Wooden Case
• Specification: As request
• Trademark: ZX
• Origin: China

Product Description

Product Description

          

1. Brief introduction
   Kelly cock is one type of manual control valve which for drill string circulating system, could prevent blow out efficiently. It is divided by upper Kelly cock and lower Kelly cock. Upper Kelly cock is used below tap and above Kelly, lower Kelly cock is used below Kelly and above drill pipe or between above of Kelly protecting sub. Rotating 90 degree by professional wrench to open/close. In drilling operation, connect Kelly cock above and below Kelly could avoid blow-out accident.
    
2. Structure feature
   Kelly cock sealing is by rigid coordination through ball valve body and ball seat, rubber seal is as assistant. Surface is compressed by spring. When in blow-out and close Kelly cock, pressure in well will force valve key to valve seat. Kelly valve sealing is better as higher of pressure to valve seat.

       Applicable Industries: Energy & Mining
       Use::Well Drilling
       Place of Origin: Shandong, China
       Brand Name: Zhao Xin
       Material: Alloy
       Type:  Kelly cock

Product Parameters

Upper Kelly cock:

OD (mm)	Hole ID (mm)	Working pressure (MPa)	Thread connection	Suitable scope
Ф146	Ф50	35/70/105	4 1/2''REG-LH	Square Kelly or hexagonal kelly
Ф200	Ф60	35/70/105	6 5/8''REG-LH

Lower Kelly cock:

OD (mm)	Hole ID (mm)	Working pressure (MPa)	Thread connection	Suitable scope
Ф105	Ф41	35/70/105	DC31	Square Kelly or hexagonal kelly
Ф121	Ф50		DC38
Ф127	Ф50		DC38
Ф165	Ф61		DC46
Ф178	Ф71		DC50, 5 1/2''FH

Detailed Photos