Thermal Recovery Wellhead Assembly is available for the oil well in the
                                          light-corrosion  environment during the operation of Cyclic Steaming, Steam
                                          Driving, Hot-water Circulation, or Production of Naphthene Base and Mixed Base.

Technical Parameters for KZ Series Injection Wellhead Assembly

Type	KR65-14	KR65-21
Gate valve NPS	65	65
Max Working pressure	2000（14）	3000（21）
Max Working Temperature	337（639）	370(698)
Temperature Class	P·U
Product Specification Grade	PSL1-3
Performance Requirement Grade	PR1-2
Min Vertical ID	65/16′(160mm)
Tubing Hanger thread	31/2′or according user’s requirement
Tubing Hanger	Cone or vertical