초록 ▼

A ball check valve connects to a duct leading from a process pipe to a flow transmitter, pressure gauge or sampling analyzer. A unique check valve is connected to the distal end of the straight-through duct. A cleaning rod impales a packing gland which is connected onto the check valve when cleaning

A ball check valve connects to a duct leading from a process pipe to a flow transmitter, pressure gauge or sampling analyzer. A unique check valve is connected to the distal end of the straight-through duct. A cleaning rod impales a packing gland which is connected onto the check valve when cleaning is initiated. The cleaning rod is inserted through the check valve and into the duct to clean debris without the loss of any fluid while maintaining full process pressure.

대표청구항 ▼

The process involving an opening such as a nozzle with a duct extending to the opening with the duct being closed by a main valve, wherein the improved method comprises: a. cleaning debris from the duct and the opening below the main valve by b. inserting a rod through a check valve on the distal en

The process involving an opening such as a nozzle with a duct extending to the opening with the duct being closed by a main valve, wherein the improved method comprises: a. cleaning debris from the duct and the opening below the main valve by b. inserting a rod through a check valve on the distal end of the duct, through the main valve while the main valve is closed and through the duct, c. opening and unseating the check valve with said rod, d. mounting a packing gland upon said rod, and e. attaching said packing gland to the check valve before inserting the rod through the check valve and before unseating the check valve.