All of the products are designed and manufactured strictly according to API-7-1 Specification.
Drop-in check valve is an internal preventer. 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. my skype: lucky_lakepetro
The products can be manufactured according to your demand.
API-7-1 Spec Standard Drop-in check valves
